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Japanese Automotive Aluminum Patents

JP2018-127720 — AUTOMOBILE ELECTRIC WIRE WITH TERMINAL AND WIRE HARNESS — Auto Network Gijutsu Kenkyusho:Kk, Sumitomo Wiring Systems Ltd., and Sumitomo Electric Industries Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum alloy strand, an aluminum alloy twisted wire, an automobile electric wire and a wire harness, capable of enhancing terminal fastening force. SOLUTION: An aluminum alloy strand 10 has a chemical component composition containing, by mass%, Mg:0.3% to 0.9%, Si:0.1% to 0.7%, Fe:0.1% to 0.4%, at least one element selected from a group consisting of Cu, Cr, Ni and Zr: total 0.01% to 0.5%, and the balance Al with inevitable impurities. Surface roughness Ra by a non-contact type surface roughness measuring machine is 0.15 μm to 2 μm. An aluminum alloy twisted wire 1 is manufactured by twisting a plurality of aluminum alloy strands 10. An automobile electric wire 2 has the aluminum alloy twisted wire 1. A wire harness 3 has the automobile electric wire 2 and a terminal 30 crimped to the aluminum alloy twisted wire 1 of the automobile electric wire 2.

JP2018-003045 — BRAZING MEMBER EXCELLENT IN STRENGTH AFTER BRAZING, CLAD MATERIAL, AND HEAT EXCHANGER FOR AUTOMOBILE — Mitsubishi Aluminum Co. Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide a brazing member capable of maintaining strength after brazing, a clad material and a heat exchanger for automobile. SOLUTION: A brazing member consists of an aluminum alloy containing, by mass%, Mn:1.0 to 2.0%, Cu:0.1 to 1.0% and Si:0.3 to 1.0% and the balance Al with inevitable impurities, and has electric conductivity of 45%IACS or less, sold solubility of each element in a matrix satisfying Mn content of 18% to 25%, Si content of 35% to 45%, Cu content of 70% to 80% and number density of an Al-Mn-Si-based intermetallic compound with circle equivalent diameter of 0.5 μm to 3.5 μm of 1.0×104/mm2 or less.

JP2017-218645 — ALUMINUM ALLOY WIRE AND AUTOMOBILE WIRE HARNESS USING THE SAME — Yazaki Corp. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum alloy wire containing an aluminum alloy raw wire having properties of tensile strength of 165 MPa or more, breaking elongation of 7% or more and conductivity of 40%IACS or more. SOLUTION: An aluminum alloy wire contains an aluminum alloy raw wire containing Mg, Si and the balance aluminum with inevitable impurities, the aluminum alloy raw wire contains Mg of 0.6 to 1.4 atom% and Si of 0.2 to 1.0 atom%, variation coefficient calculated by dividing standard deviation of crystal particle diameter observed on a cross-section surface by average particle diameter of the crystal particles is 0.8 or less, tensile strength is 165 MPa or more, breaking elongation is 7% or more and conductivity is 40%IACS or more.

JP2017-179413 — METHOD FOR PRODUCING AUTOMOBILE ALUMINUM ALLOY FORGED MATERIAL — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide a method for producing an automobile aluminum alloy forged material capable of imparting high strength. SOLUTION: Provided is a method for producing an automobile aluminum alloy forged material comprising: a dissolution step where raw material is dissolved, and the components are adjusted so as to be a 6000 series aluminum alloy; a casting step where, after the dissolution step, an ingot is cast; a homogenization heat treatment step where, after the casting step, the ingot is subjected to homogenization heat treatment; a forging step where, after the homogenization heat treatment step, the ingot is forged into an aluminum alloy forged material with a prescribed shape; a solution heat treatment step where, after the forging step, the aluminum alloy forged material is subjected to solution heat treatment; a hardening step where, after the solution heat treatment step, the aluminum alloy forged material is hardened; and an artificial aging treatment step where, after the hardening step, artificial aging treatment is performed, and the hardening time in the hardening step is 1 to 5 min.

JP2017-177879 — AUTOMOBILE ROOF UNIT AND METHOD FOR MANUFACTURING AUTOMOBILEPROVIDED WITH ROOF UNIT — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an automobile roof unit that is capable of suppressing the occurrence of residual deformation in a roof panel after a baking painting process, and a method for manufacturing an automobile provided with the roof unit. SOLUTION: A roof structure 10 is provided with: an aluminum roof panel 30; a roof reinforcement 40; and a metal elastic support 50. The roof panel 30 and the roof reinforcement 40 are joined to a steel roof side rail. The elastic support 50 is interposed between the roof panel 30 and the roof reinforcement 40, and can be elastically deformed according to the increase/decrease of an interval between the roof panel 30 and the roof reinforcement 40. The elastic support 50 is deformed according to the thermal expansion or the thermal contraction of the roof panel 30 and the roof reinforcement 40 during a baking painting process.

JP2017-145463 — ALUMINUM ALLOY BRAZING SHEET AND MANUFACTURING METHOD, AUTOMOTIVE HEAT EXCHANGER USING THE BRAZING SHEET — UACJ Corp. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum-brazing agent having inner and outer surfaces of a flow channel forming component with a brazing function, an inner surface or the inner and outer surfaces having sacrificial anode action and exhibiting good brazing property even when brazing length of the flow channels each other is long and having no generation of preferential corrosion at a brazing part. SOLUTION: There are provided an aluminum alloy brazing sheet consisting of an aluminum alloy having a core material of aluminum alloy, a first brazing material clad on one surface of the core material and a second brazing material clad on another surface, where the core material, the first brazing material and the second brazing material consists of aluminum alloy having a specific composition respectively and the first brazing material and the second brazing material have sacrificial anode action and brazing function, having an Al-Si-Fe-based intermetallic compound with 0.5 to 80.0 μm of circle equivalent diameter of an amount of 2000/mm2 or less, a manufacturing method thereof and an automobile heat exchanger.

JP2017-140860 — AUTOMOBILE BODY STRUCTURE AND METHOD FOR MANUFACTURING AUTOMOBILE — Honda Motor Co Ltd. (Japan) — PROBLEM TO BE SOLVED: To enhance a rigidity of a damper base made of an aluminum alloy while avoiding increase in the number of components and weight. SOLUTION: An upper wall 25a of a damper base 25 has a second opening 25g, into which a vehicle width direction outer end part of a suspension arm 31 of a front wheel can enter, between a first corner part c1 and a first opening 25f. Since two of plural first ribs 25j, which are formed on a top face of the upper wall 25a, pass both sides of the second opening 25g and reaches the first corner part c1, a load, which is inputted from a damper to the first opening 25f of the upper wall 25a of the damper base 25, is transmitted to the first corner part c1 having a high rigidity via the two first ribs 25j, whereby reduction in a rigidity of the upper wall 25a of the damper base 25 due to formation of the second opening 25g can be kept to the minimum while avoiding increase in the number of components and weight.

JP2017-110245 — ALUMINUM ALLOY FORGED MATERIAL FOR AUTOMOBILE — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum alloy forged material for automobile having high strength. SOLUTION: The aluminum alloy forged material for automobile contains, Mg:0.70 to 1.50 mass%, Si:0.60 to 1.50 mass%, Cu:0.20 to 0.70 mass%, Ti:0.001 to 0.100 mass% and two or more kinds of Mn:0.01 to 0.80 mass%, Cr:0.10 to 0.30 mass% and Zr:0.05 to 0.25 mass% and the balance Al with inevitable impurities and having a number density of an acicular precipitate 1 with equivalent circle diameter of 2 to 10 nm of 30,000/µm3 or more.

JP2017-106120 — ALUMINUM WIRE FOR AUTOMOBILE — Auto Network Gijutsu Kenkyusho:Kk, Sumitomo Wiring Systems Ltd., and Sumitomo Electric Industries Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide a manufacturing method for an aluminum wire for automobile excellent in tensile strength, processability, elasticity and shock resistance while securing conductivity as a conductor and reducing weight. SOLUTION: A method has: a step of casting an aluminum alloy by quick solidification of a molten aluminum alloy containing Fe of 0.90 to 1.20 mass%, Mg of 0.10 to 0.25 mass% and the balance Al with inevitable impurities at a cooling rate of 20°C/sec. or more at 700 to 600°C, which is a solid liquid coexistence temperature; a step of forming an aluminum alloy conductor by plastic processing the aluminum alloy; a step of applying a softening treatment to the aluminum alloy conductor; and a step of coating the aluminum alloy conductor with an insulating material.

JP2017-095806 — ALUMINUM ALLOY TWISTED WIRE, WIRE FOR AUTOMOBILE AND WIRE HARNESS — Auto Network Gijutsu Kenkyusho:Kk, Sumitomo Wiring Systems Ltd., and Sumitomo Electric Industries Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum alloy element wire, an aluminum alloy twisted wire, a wire for automobile and a wire harness capable of improving terminal fastening force. SOLUTION: An aluminum alloy element wire 10 has a chemical component composition containing, by mass%, Mg:0.3% to 0.9%, Si:0.1% to 0.7%, Fe:0.1% to 0.4%, at least one kind of element selected from a group consisting of Cu, Cr, Ni and Zr:total 0.01% to 0.5% and the balance Al with inevitable impurities. Surface roughness Ra by a non-contact type surface toughness measurement device is 0.15 μm to 2 μm. An aluminum alloy twisted wire 1 is manufactured by twisting a plurality of aluminum alloy element wire 10. A wire for automobile 2 has the aluminum alloy twisted wire 1. A wire harness 3 has the wire for automobile 2 and a terminal 30 crimped by the aluminum alloy twisted wire 1 of the wire for automobile 2.

JP2017-094858 — INSTRUMENTAL DEVICE FOR AUTOMOTIVE VEHICLE — Takeuchi Kogyo KK (Japan) — PROBLEM TO BE SOLVED: To provide an instrumental device for an automotive vehicle which efficiently radiates heat generated by an electronic circuit of a control unit disposed on a back surface of measuring instruments of measuring instruments for an automotive vehicle and a backlight to prevent heat generation of the entire instrumental device and prevents leakage of electromagnetic wave noise. SOLUTION: An instrumental device for an automotive vehicle includes: a surface panel on which a display unit is mounted; a control unit which controls a display of the display unit disposed on a back surface of the display unit; and a rear cover covering the back surface of the control unit. The rear cover is formed by an aluminum material. The above object is achieved by the instrumental device for the automotive vehicle.

JP2017-088926 — ALUMINUM ALLOY SHEET FOR AUTOMOBILE BUS BAR EXCELLENT IN LASER WELDABILITY — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum alloy sheet for automobile bus bar having relatively high conductivity and excellent in laser weldability and flexure processability. SOLUTION: There is provided an aluminum alloy sheet having a composition consisting of Si:0.35 mass% or less, Fe:0.15 to 0.60 mass%, Ti:0.10 mass% or less, B:1 to 6 ppm and the balance Al with inevitable impurities. There is provided an aluminum alloy sheet for bus bar having number density of intermetallic compounds with maximum length at 1/4 of sheet thickness of a cross section of the aluminum alloy sheet of 2 μm or more of 400 to 1500 /mm2 and conductivity of 58 to 62%IACS. There is provided an aluminum alloy sheet for automobile bus bar containing further one or more kind of Cu:0.10 mass% or less, Mn:0.05 mass% or less or Mg:0.05 mass% or less.

JP2017-088906 — ALUMINUM ALLOY SHEET FOR AUTOMOBILE STRUCTURAL MEMBER AND MANUFACTURING METHOD THEREFOR — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide a 6000 series aluminum alloy sheet suitable for an automobile structural member. SOLUTION: Mg amount and Si amount of an Al-Mg-Si-based aluminum alloy sheet is balanced with a specific relation, especially the cube direction is increased as an aggregate structure in a surface area of the sheet, yield ratio of the sheet is reduced, the sheet is made with high strength with 0.2% bearing stress of 220 MPa, which is necessary as an automobile structural member and crushability by a VDA flexure test shown in the Figure 1 is enhanced.

JP2017-048456 — ALUMINUM ALLOY MATERIAL, JOINT BODY, AUTOMOTIVE MEMBER, METHOD OF MANUFACTURING ALUMINUM ALLOY MATERIAL, AND METHOD OF MANUFACTURING JOINT BODY — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum alloy material that is superior in productivity in manufacturing a joint body, and has a high joining strength and hardly decreases in joining strength, the joint body of the aluminum alloy material and a resin material, an automotive member, a method of manufacturing the aluminum alloy material, and a method of manufacturing the joint body. SOLUTION: According to the present invention, there is provided an aluminum alloy material that comprises an aluminum alloy base material; a first coating made of an oxide coating formed on at least a part of a surface of the aluminum alloy base material and containing 0.1 to less than 20 atom% Mg, 5 to 60 atom% Si, and less than 0.6 atom% Cu; and a second coating formed on at least a part of the first coating and having a siloxane bond, the spectrum obtained by making parallel polarized light of 75° in angle of incidence incident on the surface where the first coating and second coating are formed by a Fourier transform type infrared spectroscopy method having a peak height of 0.01 to 0.50 near 1,100 cm-1 to 1,400 cm-1.

JP2017-048452 — ALUMINUM ALLOY SHEET FOR AUTOMOBILE BODY PANEL EXCELLENT IN FILIFORM RUST RESISTANCE, COATING GALLING CURABILITY AND PROCESSABILITY AND MANUFACTURING METHOD THEREFOR, AUTOMOBILE BODY PANEL USING THE SAME AND MANUFACTURING METHOD THEREFOR — Honda Motor Co. Ltd., Nippon Steel & Sumitomo Metal, and UACJ Corp. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum alloy sheet for an automobile body panel excellent in filiform rust resistance and recycling property and a manufacturing method therefor, an automobile body panel using the same and a manufacturing method therefor. SOLUTION: An aluminum alloy sheet for an automobile body panel excellent in filiform rust resistance and recycling property, is made of an Al alloy containing Mg:0.30 to 0.80 mass% (hereafter referred to as “%”), Si:0.80 to 1.40%, Mn:0.20 to 0.65%, Zn:0.44 to 0.60%, Fe:0.25 to 0.40% and Cu:0.17 to 0.25%, has elongation of 23% at 100 days after solution heat treatment, bearing force after conducting coating galling treatment of 200 MPa or more and further point number in a Heming test based on JISH7701 of 0 to 2 points. The present invention also provides a manufacturing method for the aluminum alloy sheet, an automobile body panel using the aluminum alloy sheet and a manufacturing method therefor.

JP2017-031471 — Al-Si-Mg-BASED ALUMINUM ALLOY SHEET, MANUFACTURING METHOD OF THE ALLOY SHEET AND AUTOMOBILE COMPONENT USING ALLOY SHEET — Nissan Motor Co. Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an Al-Si-Mg-based aluminum alloy sheet achieving both of high elongation and high resistance which are required for automobile components and capable of using an aluminum scrap material. SOLUTION: The Al-Si-Mg-based aluminum alloy sheet consists of aluminum (Al), silicon (Si), magnesium (Mg), iron (Fe) and inevitable impurities. A composition of the aluminum alloy sheet has Si content of 3 mass% to 6 mass%, Mg content of 0.4 mass% to 2.4 mass%, Fe content of 1 mass% or less and the balance Al with inevitable impurities and conductivity of the aluminum alloy sheet at 24°C is 45%IACS or less.

 

JP2017-030582 — VEHICLE BODY STRUCTURE OF AUTOMOBILE — Honda Motor Co. Ltd. (Japan) — PROBLEM TO BE SOLVED: To enhance energy absorption performance of a bumper beam which has both vehicle width direction end sections supported by a pair of bumper beam extensions. SOLUTION: A bumper beam 15 made of an aluminum extrusion material includes: a straight section 15A located at a vehicle width direction center; inclined sections 15B inclined from both vehicle width direction ends of the straight section 15A to the longitudinal direction inside; and a pair of upper and lower joint flanges 23 extending from longitudinal direction inner ends of the inclined sections 15B to the longitudinal direction inside. A bumper beam extension 14 is configured in a cylindrical cross section so that a vehicle width direction dimension is larger than a vertical direction dimension. The pair of upper and lower joint flanges 23 of the bumper beam 15 is connected to an upper wall 20 and a lower wall of the bumper beam extension 14, thereby bending the bumper beam 15 into a bow-shape at each of boundaries between the right and left inclined sections 15B and the straight section 15A during a pole collision so as to increase absorption of collision energy.

JP2017-001553 — AUTOMOBILE EXTERIOR ARTICLE — Toyoda Gosei Co. Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an automobile exterior article that can absorb contact energy when a pedestrian contacts it by deforming the inside of an automobile only in a small amount. SOLUTION: An automobile hood 11 as an automobile exterior article provided to a body of an automobile is composed of a honeycomb structure 15 at least partially. The honeycomb structure 15 includes a honeycomb part 16 and an inner plate part 30 each formed of resin, and an outer plate part 40 formed of an aluminum alloy. The honeycomb part 16 is composed of a plurality of cells 20 that are partitioned by partition walls 21 respectively, and form a cylindrical shape by extending in the inner-outer directions. The inner plate part 30 is arranged inside the honeycomb part 16, and the outer plate part 40 is arranged outside the honeycomb part 16 which seals the respective cells 20 by sandwiching the honeycomb part 16 from both inner and outer sides together with the inner plate part 30. The honeycomb part 16 is provided with an impact absorbing unit for absorbing energy when external force directed to the inside of the automobile is applied through the outer plate part 40.

JP2016-204739 — ALUMINUM ALLOY STRAND, ALUMINUM ALLOY TWISTED WIRE AND MANUFACTURING METHOD THEREFOR, ELECTRIC WIRE FOR AUTOMOBILE, AND WIRE HARNESS — Auto Network Gijutsu Kenkyusho:Kk, Sumitomo Wiring Systems Ltd., and Sumitomo Electric Industries Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum alloy strand, an aluminum alloy twisted wire, an electric wire for an automobile and wire harness capable of enhancing terminal fastening power. SOLUTION: An aluminum alloy strand 10 has a chemical component composition containing, by mass%, Mg:0.3% to 0.9%, Si:0.1% to 0.7%, Fe:0.1% to 0.4% and at least one element selected from a group consisting of Cu, Cr, Ni and Zr of total 0.01% to 0.5% and the balance Al with inevitable impurities. Surface roughness Ra by a non-contact type surface roughness measurement device is 0.15 μm to 2 μm. The aluminum alloy twisted wire 1 is manufactured by twisting a plurality of aluminum alloy strands 10. An electric wire 2 for an automobile has the aluminum alloy twisted wire 1. Wire harness 3 has the electronic wire 2 for the automobile and a terminal 30 crimped to the aluminum alloy twisted wire 1 of the electronic wire 2 for the automobile.

JP2016-166389 — AUTOMOBILE ROOF PANEL MADE OF ALUMINUM ALLOY AND ALUMINUMALLOY SHEET FOR AUTOMOBILE ROOF PANEL — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To suppress occurrence of residual deformation or buckling specifically at an initial stage of heating, in coating-baking treatment of a roof panel made of an aluminum alloy joined to a steel member. SOLUTION: An Al-Mg based aluminum alloy sheet composed of a composition including specific Mg and Cu is subjected to annealing and tempered within a specific range, so as to have excellent coating-baking temperature characteristics with a certain level or higher 0.2% proof-stress at room temperature, 0.2% proof-stress immediately after reaching 190°C by heating, and 0.2% proof-stress after having been heated at 190°C×20 min. Residual deformation or buckling specifically at an initial stage of heating, in coating-baking treatment of a roof panel made of the aluminum alloy joined to a steel member, is suppressed as in the distribution of a residual deformation amount shown in a solid line in Figure 3.

 

JP2016-143665 — ELECTRIC CONTACT MEANS AND ELECTRICAL CABLE ASSEMBLY FOR AUTOMOTIVE INDUSTRY — Te Connectivity Germany Gmbh (Germany) And Tyco Electronics UK Ltd. (UK) — PROBLEM TO BE SOLVED: To provide a contact means for obtaining a current distribution. SOLUTION: In an electric contact means (1), a contact section (10) includes a plurality or a multitude of contact springs (110) for electrically contacting a counter-contact means (5), and the contact section (10) also includes at least two, preferably at least three, four or more contact springs (110) having a different geometrical shape for obtaining a balanced current distribution through the contact means (1). Furthermore, the present invention relates to a cable assembly for an electrical power contacting, preferably comprising a female-contact means (1), for a copper or an aluminum cable for the automotive industry. The electrical cable assembly includes an inventive electric contact means (1), preferably an inventive female-contact means (1).

JP2016-098435 — ALUMINUM ALLOY FOR AUTOMOBILE OUTER SHEET AND MANUFACTURING METHOD THEREFOR — Hyundai Motor Company Co. Ltd. — PROBLEM TO BE SOLVED: To provide an aluminum alloy for automobile outer sheet having enhanced elasticity, moldability and dent resistance and a manufacturing method therefor. SOLUTION: The aluminum alloy for automobile outer sheet has a composition consisting of Ti, B, Mg and the balance Al, having composition ratio of Ti:B:Mg of 1:2.0 to 2.5:5.0 to 6.0 with B constituted at 1.1 to 2.5 wt.%, and containing both of an AlB2 phase and a TiB2 phase as a reinforcement phase, consisting of Mg:0.5 to 5 wt.%, Ti:0.55 to 1.0 wt.%, B:1.1 to 2.5 wt.% and the balance Al with composition ratio of Ti:B:Mg of 1:2.0 to 2.5:5.0 to 6.0 and containing all of the AlB2, the TiB2 phase and a MgB2 phase as the reinforcement phase.

 

JP2016-089261 — ALUMINUM ALLOY MATERIAL, CONJUGATE, AUTOMOTIVE MEMBER, AND MANUFACTURING METHOD OF ALUMINUM ALLOY MATERIAL — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum alloy material excellent in bond durability, in which bond strength is hardly lowered even when being exposed to a high-temperature wet environment; and to provide a conjugate, an automotive member, and a manufacturing method of the aluminum alloy material. SOLUTION: When forming the first film comprising an oxide film on the surface of an aluminum alloy substrate (first film formation step), the etching amount is controlled below 700 nm, and a treatment with aqueous solution containing a silicate is performed as a final stage for substantial film formation of this step, to thereby form the first film, and thereafter, a silane coupling treatment is performed, to thereby form the second film having a siloxane bond.

JP2016-087620 — MANUFACTURING METHOD FOR AUTOMOBILE COMPONENT HAVING OIL PASSAGE AND AUTOMOBILE COMPONENT MANUFACTURED BY THE METHOD — Aisin Keikinzoku Co. Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide a manufacturing method for an automobile component having an oil passage which has high sealability and no possibility of oil leakage even when the long oil passage having a small inner diameter is formed, and the automobile component obtained by the method. SOLUTION: A manufacturing method for an automobile component having an oil passage includes: a step for disposing an insert member made of solid aluminum or aluminum alloy which has an internal defect in a metallic mold; a step for injection-casing molten metal of the aluminum alloy into the metallic mold at a high pressure and a high speed; and a step for forming an oil passage in the cast insert member by machining.

JP2016-047950 — ALUMINUM ALLOY MATERIAL EXCELLENT IN BOND DURABILITY, AND CONJUGATE, OR AUTOMOBILE MEMBER — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide a 6000 series aluminum alloy material using an adhesive for being bonded to a member, and applicable as an automotive member such as an automobile panel. SOLUTION: Bond durability evaluated by a test method shown in figure 1 is improved, by specifying the existence state of Sn and Mg in a surface oxide film of an extremely shallow part such as an extremely outermost surface or a surface layer part in contact with an adhesive, of an oxide film of a 6000 series Al alloy sheet having a specific composition containing Sn, and thereby application of the 6000 series Al alloy sheet is enlarged to an outer panel or the like having no choice but to be bonded by using an adhesive.

JP2016-026267 — ALUMINUM WIRE FOR AUTOMOBILE — Auto Network Gijutsu Kenkyusho:Kk, Sumitomo Wiring Systems Ltd., Sumitomo Electric Industries Ltd., and Sumitomo Electric Toyama Co. Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide a manufacturing method for an aluminum wire for automobile excellent in tensile strength, processability, elasticity and shock resistance while securing conductivity as a conductor and reducing weight. SOLUTION: A method has: a step of casting an aluminum alloy by quick solidification of a molten aluminum alloy containing Fe of 0.90 to 1.20 mass%, Mg of 0.10 to 0.25 mass% and the balance Al with inevitable impurities at a cooling rate of 20°C/sec. or more at 700 to 600°C, which is a solid liquid coexistence temperature; a step of forming an aluminum alloy conductor by plastic processing the aluminum alloy; a step of applying a softening treatment to the aluminum alloy conductor; and a step of coating the aluminum alloy conductor with an insulation material.

JP2015-196855 — ALUMINUM ALLOY MATERIAL EXCELLENT IN ADHESION DURABILITY AND BONDED BODY OR AUTOMOTIVE MEMBER — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide a 6000 series aluminum alloy material that uses an adhesive for bonding with a member and is applicable as an automotive member such as an automobile panel. SOLUTION: Adhesion durability of an oxide film of a 6000 series aluminum alloy sheet having a specific composition containing Sn as evaluated by a testing method shown in Figure 1 is enhanced by regulating the Sn content to a specific range and restricting the Mg content to not more than a specific amount to expand the application of the 6000 series aluminum alloy sheet to an outer panel and the like which have no choice but to use an adhesive for bonding.

JP2015-157967 — ALUMINUM ALLOY SHEET, CONJUGATE AND AUTOMOTIVE MEMBER — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum alloy sheet having bond strength less likely lowered even when being exposed to a high temperature wet environment, and having excellent bond durability; and to provide a conjugate and an automotive member. SOLUTION: At least one surface of an aluminum alloy substrate is allowed to contain Mg as much as 0.1 atom% or more and less than 30 atom%, and Si as much as 5 atom% or more and 30 atom% or less, and a first coating is formed, which comprises an oxide film in which each concentration of Cu and S is regulated to be less than 0.6 atom% and less than 5 atom%, respectively, to thereby obtain an aluminum alloy sheet. A conjugate or an automotive member is produced by using the aluminum alloy sheet.

JP2015-067857 — Al-Mg-Si-BASED ALUMINUM ALLOY SHEET FOR AUTOMOBILE PANEL AND MANUFACTURING METHOD THEREFOR — UACJ Corp. — PROBLEM TO BE SOLVED: To provide an Al-Mg-Si-based aluminum alloy sheet for automobile panel excellent in press moldability, bendability capable of flat hem processing, shape freezing property, coating galling curability and corrosion resistance, and to provide a manufacturing method therefor. SOLUTION: A Al-Mg-Si-based aluminum alloy sheet for automobile panel contains Si:0.4 to 1.5%, Mg:0.2 to 1.2%, Cu:0.001 to 1.0%, Zn:0.5% or less, Ti:0.1% or less, B:50 ppm or less, one or more kind of Mn:0.30% or less, Cr:0.20% or less and Zr:0.15% or less, and the balance Al with inevitable impurities. A Cube direction density distribution at 1/4 depth part of sheet thickness from a surface is in a range of 10 to 25, an average of r value rave(rave=(r0+r90+r45×2)/4) is 0.50 or more, an absolute value of an in-plane anisotropy index of the r value Δr(Δr=(r0+r90-r45×2)/2 is 0.30 or less and an average crystal particle diameter is 50 μm or less.

JP2015-061948 — HIGH-STRENGTH ALUMINUM ALLOY PLATE, JOINT AND MEMBER FOR AUTOMOBILE — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an Al-Zn-mg aluminum alloy extrusion material for bumper reinforcement which can obtain high strength by die quenching by air cooling and has excellent SCC resistance. SOLUTION: The present invention provides an aluminum alloy extrusion material in which, when mass% of Mg is [Mg] and mass% of Zn is [Zn], three formulae: 5.43 ≤ [Zn] ≤ 6.3, [Zn]/ [5.38+0.15] ≤ [Mg] ≤ [Zn]/[5.38+0.34], and 11.68 ≤ [Zn]+4.7[Mg] ≤ 14 are satisfied, and the material comprises one or two selected from Cu: 0.1-0.6 mass% and Ag: 0.01-0.15 mass%, Ti: 0.005-0.05 mass%, and one or more selected from Mn: 0.1-0.3 mass%, Cr: 0.05-0.2 mass%, and Zr: 0.05-0.2 mass%, with the balance being Al and unavoidable impurities.

JP2015-003514 — ALUMINUM ALLOY PLATE, JOINT AND MEMBER FOR AUTOMOBILE — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide an aluminum alloy plate which causes less deterioration of adhesion strength even when exposed to a high-temperature, high-humidity environment and is excellent in adhesion durability and a joint and a member for automobiles. SOLUTION: A first film composed of an oxide film containing 0.1 atom% or more and less than 30 atom% of Mg is formed on at least one side of an aluminum alloy substrate plate, and a second film containing a siloxane bond is formed on at least a part of the first film. The film amount of the second film is 0.1 mg/m2 or more and less than 30 mg/m2. In a spectrum obtained by causing parallel polarized light of an incidence angle of 75° to impinge on the surface on which the first and second films are formed and analyzing by the Fourier transformation infrared spectroscopy, with the range from 1026 cm-1 to 1084 cm-1 as the base line, the area of a peak occurring in the vicinity of 1057 cm-1 is 0.01 or greater.

JP2014-208879 — AUTOMOBILE ALUMINUM ALLOY FORGED MATERIAL, AND MANUFACTURING METHOD THEREFOR — Kobe Steel Ltd. (Japan) — PROBLEM TO BE SOLVED: To provide a high strength automobile aluminum alloy forged material. SOLUTION: An automobile aluminum alloy forged material 1 contains Si:0.7 to 1.5 mass%, Fe:0.5 mass% or less, Cu:0.1 to 0.6 mass%, Mg:0.6 to 1.2 mass%, Ti:0.01 to 0.1 mass%, Mn:0.25 to 1.0 mass%, Zn: limited to 0.05 mass% or less, further at least one kind selected from a group consisting of Cr:0.1 to 0.4 mass% and Zr:0.01 to 0.2 mass%, a hydrogen amount: limited to 0.25 ml/100 g Al or less, and the balance Al with inevitable impurities, and has an area ratio of a <111> aggregate texture in a cross section parallel to an extrusion direction, of 60% or more.

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