WO2019167469A1 - Matériau d'alliage d'aluminium de système al-mg-si - Google Patents

Matériau d'alliage d'aluminium de système al-mg-si Download PDF

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WO2019167469A1
WO2019167469A1 PCT/JP2019/001614 JP2019001614W WO2019167469A1 WO 2019167469 A1 WO2019167469 A1 WO 2019167469A1 JP 2019001614 W JP2019001614 W JP 2019001614W WO 2019167469 A1 WO2019167469 A1 WO 2019167469A1
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mass
aluminum alloy
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alloy material
amount
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PCT/JP2019/001614
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克彦 塩月
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本田技研工業株式会社
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent

Definitions

  • the present invention relates to an Al—Mg—Si based aluminum alloy material containing Cu and Ni.
  • Structural materials such as vehicle body panels and undercarriages are generally manufactured by aging treatment of materials formed by press molding, forging, etc., and Al-Mg-Si based materials used as materials for structural materials Aluminum alloys are required to have high elongation for forming in addition to strength. Therefore, various studies including chemical composition have been made in order to develop an Al—Mg—Si aluminum alloy having both high strength and elongation.
  • Patent Document 1 discloses an aluminum alloy material suitable for manufacturing an automobile body panel, and Si: 0.6 to 1.2 wt%, Mg: 0.7 to 1 based on the total weight of the aluminum alloy material. .3 wt%, Zn: 0.25 to 0.8 wt%, Cu: 0.02 to 0.20 wt%, Mn: 0.01 to 0.25 wt%, Zr: 0.01 to 0.20 wt%, and the rest
  • An aluminum alloy material that contains Al and ancillary elements and satisfies the inequality of 2.30 wt% ⁇ (Si + Mg + Zn + 2Cu) ⁇ 3.20 wt% is described.
  • Al-Mg-Si-based aluminum alloy materials used as vehicle structural materials and the like are required to have higher strength from the viewpoint of achieving both vehicle weight reduction and collision safety.
  • the Al—Mg—Si based aluminum alloy there is a relatively large amount of Cu added, and in addition to the 6111 alloy that improves the bake hardness while securing elongation, the 6061 alloy that suppresses the amount of Cu added, etc. is there.
  • any alloy when strengthening is performed by increasing the amount of Cu or the like, corrosion resistance deteriorates, and thread corrosion, stress corrosion cracking, and the like are liable to occur, so that the durability of the structural material is impaired.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide an Al—Mg—Si based aluminum alloy material having both high strength and good corrosion resistance.
  • the Al—Mg—Si-based aluminum alloy material according to the present invention includes Si: 0.1% by mass to 2.0% by mass, Mg: 0.3% by mass to 1.5% by mass. %: Cu: 0.05% by mass or more and 3.0% by mass or less, Ni: more than 0.05% by mass and 2.3% by mass or less, and Fe, Mn, Cr, Zn and Ti One or more selected elements are optionally contained in an amount of 1.0% by mass or less, and the balance consists of Al and inevitable impurities.
  • 2 is a transmission electron microscope image of a test material made of an Al—Mg—Si—Cu-based aluminum alloy.
  • 3 is a transmission electron microscope image of a test material made of an Al—Mg—Si—Cu-based aluminum alloy with Ni added.
  • Al—Mg—Si based aluminum alloy material According to an embodiment of the present invention will be described.
  • the Al—Mg—Si based aluminum alloy material according to the present embodiment may be simply referred to as “aluminum alloy material”.
  • the Al—Mg—Si-based aluminum alloy material according to this embodiment has a chemical composition in which Cu and Ni are further added to an aluminum-based alloy to which Mg and Si are added. That is, this aluminum alloy material corresponds to an Al—Mg—Si—Cu-based aluminum alloy to which Ni is added.
  • Ni By adding Ni, it is possible to increase the strength without increasing the amount of Cu that lowers the corrosion resistance of the parent phase. Therefore, an aluminum alloy material having both high strength and good corrosion resistance can be obtained.
  • the details of the chemical composition of the aluminum alloy material will be described.
  • Si 0.1 to 2.0% by mass
  • the amount of Si in the aluminum alloy material is 0.1% by mass or more and 2.0% by mass or less.
  • Si contributes to precipitation strengthening by forming an Mg 2 Si-based ⁇ ′′ phase or ⁇ ′ phase or an AlMgSiCu-based Q ′ phase.
  • the addition of Si improves the flow of molten metal during casting. If the amount of Si is less than 0.1% by mass, the molten metal flow may deteriorate and sufficient strength may not be obtained due to precipitation strengthening. If the amount exceeds 0% by mass, elongation and formability may be deteriorated, whereas if the amount of Si is within the above range, both high strength and good elongation can be achieved.
  • the amount of Si may be 0.2% by mass or more, 0.4% by mass or more, or 0.6% by mass or more from the viewpoint of increasing strength and the like.
  • the amount of Si may be 1.8% by mass or less, 1.6% by mass or less, or 1.4% by mass or less from the viewpoint of increasing elongation.
  • Si can be positively added to the aluminum alloy material, and may be included in advance in the waste or the like used as a raw material for the aluminum alloy material.
  • Mg 0.3 to 1.5% by mass
  • the amount of Mg in the aluminum alloy material is 0.3 mass% or more and 1.5 mass% or less.
  • Mg contributes to precipitation strengthening by forming Mg 2 Si-based ⁇ ′′ phase or ⁇ ′ phase or AlMgSiCu-based Q ′ phase. If the amount of Mg is less than 0.3% by mass, On the other hand, if the amount of Mg exceeds 1.5% by mass, hot workability may be deteriorated, whereas the amount of Mg is within the above range. Thus, both high strength and good hot workability can be achieved.
  • the amount of Mg may be 0.4% by mass or more, 0.5% by mass or more, 0.6% by mass or more from the viewpoint of increasing strength and the like. It is good also as 8 mass% or more, and good also as 1.0 mass% or more.
  • the amount of Mg may be 1.3% by mass or less, 1.1% by mass or less, or 0.9% by mass or less from the viewpoint of improving hot workability. .
  • the amount of Cu in the aluminum alloy material is 0.05 mass% or more and 3.0 mass% or less.
  • Cu strengthens the Al phase by solid solution, and mainly contributes to precipitation strengthening by forming an AlMgSiCu-based Q ′ phase. If the amount of Cu is less than 0.05% by mass, there is a possibility that sufficient strength cannot be obtained by addition of Cu. On the other hand, when the amount of Cu exceeds 3.0% by mass, the corrosion resistance deteriorates. On the other hand, if the amount of Cu is within the above range, it is possible to increase the strength within a range that does not significantly impair the corrosion resistance of the aluminum alloy material.
  • the amount of Cu may be 0.1% by mass or more, 0.2% by mass or more, or 0.3% by mass or more from the viewpoint of increasing the strength. Further, the amount of Cu may be 2.0% by mass or less, 1.0% by mass or less, or 0.5% by mass or less from the viewpoint of increasing the corrosion resistance.
  • Ni 0.05 to 2.3% by mass
  • the amount of Ni in the aluminum alloy material exceeds 0.05% by mass and is 2.3% by mass or less.
  • Ni mainly contributes to precipitation strengthening by forming Mg 2 Si-based ⁇ ′′ phase or ⁇ ′ phase or AlMgSiCu-based Q ′ phase.
  • Al—Mg—Si—Cu-based aluminum alloys these The intermediate phase of Mg is formed of Mg, Si, and Cu.
  • Ni becomes ⁇ ′′ phase.
  • ⁇ ′ phase and Q ′ phase are formed, and high strength can be achieved without increasing the amount of Cu.
  • the amount of Ni when the amount of Ni is 0.05% by mass or less, there is a high possibility that the effect of adding Ni cannot be significantly obtained.
  • the amount of Ni exceeds 2.3% by mass, the elongation decreases due to excessive increase of crystallized materials, and the tensile breaking elongation of the aluminum alloy material may be less than 10% required for various applications. high.
  • the amount of Ni if the amount of Ni is within the above range, precipitation strengthening can be achieved without depending on the amount of Cu, and both high strength and good elongation can be achieved without impairing the corrosion resistance of the aluminum alloy material. Can be made.
  • the amount of Ni may be 0.1% by mass or more, 0.3% by mass or more, or 0.5% by mass or more from the viewpoint of increasing the strength. Further, the amount of Ni may be 2.0% by mass or less, 1.8% by mass or less, or 1.6% by mass or less from the viewpoint of increasing elongation.
  • the aluminum alloy material may optionally contain one or more elements selected from the group consisting of Fe, Mn, Cr, Zn, and Ti in an amount of 1.0% by mass or less. That is, Fe, Mn, Cr, Zn, and Ti may be included as inevitable impurities due to raw materials, manufacturing processes, and the like, and are actively added as long as the content is 1.0% by mass or less. It may be.
  • Fe contributes to suppression of seizure at the time of casting, improvement of strength, and the like, but it can deteriorate elongation when a coarse or large amount of crystallized matter is formed.
  • the amount of Fe is preferably 0.7% by mass or less, more preferably 0.5% by mass or less, and still more preferably 0.3% by mass or less. It is particularly preferable that Fe is not added actively but is in the range of 0.1 to 0.2% by mass or less which may be included as an inevitable impurity.
  • Mn is allowed to be added because it contributes to the refinement of crystal grains and the suppression of stress corrosion cracking.
  • the amount of Mn is preferably 0.7% by mass or less, more preferably 0.5% by mass or less, still more preferably 0.3% by mass or less, still more preferably 0.15% by mass or less, and still more preferably 0.05% by mass. It is not more than mass%, particularly preferably not more than 0.03% by mass.
  • the amount of Cr is preferably 0.7% by mass or less, more preferably 0.5% by mass or less, still more preferably 0.35% by mass or less, still more preferably 0.25% by mass or less, and further preferably 0.15%. It is not more than mass%, more preferably not more than 0.05 mass%, particularly preferably not more than 0.03% by mass.
  • Zn can be added for various purposes, but it is preferable not to add Zn actively.
  • the amount of Zn is preferably 0.7% by mass or less, more preferably 0.5% by mass or less, still more preferably 0.25% by mass or less, still more preferably 0.20% by mass or less, and further preferably 0.10%. It is not more than mass%, more preferably not more than 0.05 mass%, particularly preferably not more than 0.03% by mass.
  • Ti is allowed to be added because it refines crystal grains and contributes to prevention of casting cracks.
  • the amount of Ti is preferably 0.20% by mass or less, more preferably 0.10% by mass or less.
  • the aluminum alloy material may contain other elements as inevitable impurities caused by raw materials, manufacturing processes, and the like.
  • inevitable impurities include Ga, V, B, Zr, Co, Ag, Bi, Pb, and Sn.
  • the amount allowed as an inevitable impurity is 0.05% by mass or less, preferably 0.01% by mass or less, more preferably 0.005% by mass or less for each element. Further, the amount allowed for the total of the elements is preferably 0.15% by mass or less, more preferably 0.10% by mass or less.
  • the Al—Mg—Si-based aluminum alloy material according to the present embodiment can be obtained by forming into an appropriate shape according to the application.
  • the mechanical properties required for each application can be obtained by artificial aging treatment, natural aging, and age hardening by paint baking.
  • the method for producing an Al—Mg—Si based aluminum alloy material according to the present embodiment includes a molding step of molding a molded body made of an aluminum alloy adjusted to the chemical composition, and a solution of the molded body. It includes at least a solution treatment step to be processed and an aging treatment step for aging the solution-treated molded body.
  • the aluminum alloy adjusted to the chemical composition is formed into a shape according to the intended use of the aluminum alloy material.
  • the forming may be performed using any one of a rolling process, a press process, an extrusion process, a forging process, and a casting process using a mold.
  • the shape of the molded body depends on the use of the aluminum alloy material, it may be a general wrought material shape such as a plate, a net shape, or a near net shape. May be. Before or after the aging treatment step, it is possible to add a process for obtaining a net shape and other processes required for each application.
  • aluminum alloy materials used as materials for automobile body panels, etc. are manufactured by forming the material into a plate shape and subjecting the plate material to a solution treatment process, a press working process, and an aging treatment process in this order. can do.
  • the plate material is made of, for example, Al ingot, Al-containing waste, etc., and an alloy containing an additive element such as Ni, to cast an ingot, and the cast ingot is subjected to homogenization heat treatment to be homogenized. It can be obtained by rolling the heat-treated ingot.
  • the molten metal in which the metal is melted is cast using various general casting methods such as semi-continuous casting method (direct chill casting method), horizontal continuous casting method, hot top casting method, electromagnetic field casting method, etc. It is possible.
  • the homogenization heat treatment can be performed at a general holding temperature and holding time. The homogenization heat treatment may be omitted when the concentration of the additive element is low.
  • the rolling process for forming the plate material may be performed using any one of hot rolling, cold rolling, and a combination thereof, but after hot rolling the ingot to several mm in thickness.
  • the hot-rolled rolled sheet is preferably cold-rolled at a sufficient cold rolling rate, for example, 50% or more.
  • a sufficient cold rolling rate for example, 50% or more.
  • alloy components such as Ni are easily dissolved in the solution treatment, so that the effect of aging precipitation can be obtained more reliably.
  • intermediate annealing may be performed between hot rolling and cold rolling, or rolling may be performed continuously without performing intermediate annealing.
  • the plastic working performed to obtain the plate material can be performed with an appropriate working degree according to mechanical properties finally required for the aluminum alloy material, tempering conditions by heat treatment, and the like.
  • a direct casting and rolling method such as a roll type or a belt type may be used.
  • a plate material can be obtained directly from the molten metal.
  • the plate material formed by rolling in the forming step is heated and held at a temperature above the temperature at which the precipitated phase is dissolved in the solid solution and below the temperature of the solidus.
  • the holding temperature of the solution treatment is usually 450 ° C. or higher and 590 ° C. or lower, but is not particularly limited.
  • the retention time of the solution treatment can be, for example, from 10 minutes to 24 hours, but is not particularly limited.
  • the solution treated plate material is preferably cooled by water quenching from the viewpoint of suppressing precipitation of precipitates at the grain boundaries. After cooling, the plate material may be subjected to a stabilization treatment, for example, by holding at 80 ° C. or higher and 120 ° C. or lower.
  • the plate material is pressed to obtain a net-shaped or near-net-shaped plate-shaped compact.
  • the press working may be performed using any one of a warm press, a cold press, and a combination thereof.
  • the warm pressing can be performed, for example, at 230 ° C. or higher and 300 ° C. or lower.
  • plate material with which it uses for a press work process may be pre-aged at the appropriate holding temperature previously, and may be naturally aged at room temperature. That is, a T4 material prepared in advance may be used as a plate material to be pressed.
  • the solution after the solution treatment is maintained at a temperature equal to or higher than the temperature at which the precipitation phase is generated.
  • the aging treatment either natural aging treatment for natural aging hardening at room temperature or artificial aging treatment for artificial aging hardening by heat treatment may be performed.
  • any of peak aging treatment for obtaining the maximum strength, sub-aging treatment for obtaining the strength before the peak aging, and overaging treatment for obtaining the strength after the peak aging may be performed.
  • two-stage aging may be performed in the aging treatment process, two-stage aging may be performed by aging the T4 material, etc. in the aging treatment process, or after natural aging is performed as the aging treatment process, aluminum
  • the surface of the alloy material may be baked and cured in a paint baking process in which a resin paint is applied and baked.
  • the holding temperature in the artificial aging treatment is not particularly limited, but can be, for example, 100 ° C. or higher, preferably 140 ° C. or higher, more preferably 160 ° C. or higher.
  • the holding temperature can be, for example, 250 ° C. or lower, preferably 220 ° C. or lower, more preferably 200 ° C. or lower.
  • a precipitated phase is formed in a state in which solute atoms are easily diffused, so that it is possible to obtain better mechanical properties with higher uniformity.
  • the artificial aging treatment can be performed with an appropriate holding time using an appropriate heat treatment furnace such as a batch furnace or a continuous furnace.
  • an aluminum alloy material used as a material for an automobile suspension arm or the like is manufactured, for example, by forming a net shape or near net shape molded body and subjecting the molded body to a solution treatment step and an aging treatment step in this order.
  • the molded body is, for example, Al ingot, Al-containing waste, etc. and an alloy containing an additive element such as Ni are cast into an ingot, and the cast ingot or extrusion into the ingot It can obtain by performing the forging process after performing the homogenization heat processing to the extrusion material which gave, and performing a homogenization heat processing.
  • the casting and the homogenization heat treatment can be performed in the same manner as in the case of obtaining the plate material.
  • an irregular continuous casting method may be used.
  • the forging process for forming the formed body may be performed using any of hot forging, warm forging, cold forging, and combinations thereof, but the ingot is at a temperature below the melting point. Hot forging is preferred. When plastic working is performed at a sufficient working rate, an alloy component such as Ni is easily dissolved in the solution treatment, so that the effect of aging precipitation can be obtained more reliably.
  • Forging may be performed, for example, by die forging using a hydraulic press, vertical press, horizontal press, screw press, or the like, or may be performed by free forging.
  • the number of forgings, presence or absence of preforming or reheating, presence or absence of closed forging or deburring forging are not particularly limited.
  • the molded body may be obtained by casting in the case of a chemical composition that can ensure hot water flowability, resistance to casting cracking, and the like.
  • a chemical composition that can ensure hot water flowability, resistance to casting cracking, and the like.
  • Al ingots, Al-containing wastes, and alloys containing additive elements such as Ni are melted to form a molten metal, and a molded body can be obtained using a die casting method, a sand mold casting method, or the like.
  • a low pressure casting method in which a low pressure of about 0.05 MPa or less is applied
  • a high pressure casting method in which a high pressure of about several tens of MPa is applied
  • a gravity casting method, or the like may be used.
  • the compact formed in the molding step is heated and held at a temperature equal to or higher than the temperature at which the precipitated phase dissolves in the solid solution and equal to or lower than the solidus temperature. Thereafter, in the aging treatment step, the compact after the solution treatment is maintained at a temperature equal to or higher than the temperature at which the precipitated phase is generated.
  • the solution treatment and aging treatment of the molded body can be performed under the same conditions as in the case of the plate material or plate-shaped molded body, and the degree of plastic working, the progress of recrystallization, and the required mechanical properties Depending on the conditions, etc., appropriate conditions can be set.
  • the aluminum alloy material obtained by being subjected to the aging treatment process can be subjected to other processing and surface treatment depending on the application.
  • Aluminum alloy materials include, for example, processing to form a joint for joining a structural material and another member, diffusion joining for joining to another member, processing such as welding, polishing to smooth the surface, etc. Processing may be given.
  • the surface may be subjected to a surface treatment such as a chemical conversion treatment, an anodizing treatment, or a plating treatment, or a paint baking treatment.
  • an Al—Mg—Si aluminum alloy material that has been subjected to an aging treatment can be obtained.
  • the obtained aluminum alloy material has an aging structure in which a precipitated phase containing Ni exists, and has high strength and good corrosion resistance.
  • the dispersion of the crystallized product makes it easy to sever the chips generated during cutting and makes it difficult for the chips to wrap around the cutting tool or the like, so that an aluminum alloy material with improved machinability is obtained.
  • the production method of the Al—Mg—Si-based aluminum alloy material is not limited to the production methods exemplified above, and other appropriate forming, processing, heat treatment, etc. as long as the chemical composition satisfies the above range. It is possible to produce an Al—Mg—Si-based aluminum alloy material in an appropriate form.
  • the Al—Mg—Si-based aluminum alloy material according to the present embodiment has a Cu content after age-hardening due to the addition of Ni, compared to a general Al—Mg—Si—Cu-based aluminum alloy. Higher maximum strength and hardness can be obtained without dependence. By adding Ni, the effect of improving the mechanical properties of an arbitrary part can be obtained without significantly impairing the corrosion resistance.
  • the aluminum alloy material can have a tensile strength measured for an arbitrary part after the aging treatment, for example, 350 MPa or more by controlling the amount of components such as Ni and the crystal structure, and is 360 MPa or more. It can be.
  • parts after an aging treatment can be 330 Mpa or more, for example by control of the amount of components, such as Ni, and crystal structure, and can be 350 Mpa or more.
  • the tensile strength is in the range of about 360 to 370 MPa, a tensile breaking elongation of 10% to 13% can be obtained.
  • the tensile strength, 0.2% proof stress and tensile elongation at break in Al-Mg-Si-based aluminum alloy materials are determined according to the test piece, tester and test conditions specified in JIS Z 2241: 2011 after age hardening. It can obtain
  • the Al—Mg—Si based aluminum alloy material according to the present embodiment can be used as a structural material for vehicles such as automobiles and motorcycles.
  • structural materials for vehicles include exterior structural materials such as door inner panels, door outer panels, roof panels, bonnets, trunks, fenders, various beams, and suspension structural materials such as suspension arms. Is mentioned.
  • an Al-Mg-Si-Cu-based aluminum alloy with Ni added is used as the structural material, the strength can be increased without significantly damaging the corrosion resistance. Thus, it is possible to obtain a highly durable structural material that combines good corrosion resistance.
  • the Al—Mg—Si-based aluminum alloy material according to the present embodiment was prepared by changing the amount of nickel added, and for each of the prepared test materials, the influence of the amount of nickel added, age hardenability, and mechanical properties was evaluated.
  • an Al—Mg—Si—Cu-based aluminum alloy indicated as “no additive” in Table 1 is used as a basic composition, and the target value of the atomic concentration of nickel is changed within a range of 0.025 to 1.0 at%.
  • a wrought material (sample Nos. 1 to 5) was prepared and used. Table 1 shows the basic composition of the test material (“no addition”) and the measured values of the components.
  • age hardening of each specimen was evaluated based on the peak hardness during T6 treatment.
  • the solution treatment was performed at 575 ° C. for 1 hour.
  • the artificial aging treatment was performed by water quenching the solution-treated specimen and holding it at 200 ° C.
  • the micro Vickers hardness (HV0.1) by the test force 0.98N of the test material which carried out artificial aging treatment for every different holding time was measured. Table 2 shows the measurement results of the peak hardness.
  • FIG. 1 is a transmission electron microscope image of a test material made of an Al—Mg—Si—Cu-based aluminum alloy.
  • FIG. 2 is a transmission electron microscope image of a specimen made of an Al—Mg—Si—Cu-based aluminum alloy to which Ni is added.
  • FIG. 1 is a result of observing an aging structure of a cross section of a specimen having a basic composition to which Ni is not added (“no addition”) with a transmission electron microscope. Further, FIG. 2 shows the test material No. 1 in which the target value of nickel is 0.2 at%. It is the result of having observed the aging structure
  • the solution treatment was performed at 575 ° C. for 1 hour.
  • the artificial aging treatment was performed by water quenching the solution-treated specimen and holding it at 200 ° C. for 100 minutes.
  • the test material after the artificial aging treatment was subjected to a tensile test according to JIS Z 2241: 2011, and the tensile strength, 0.2% proof stress, and tensile breaking elongation were measured.
  • the results are shown in Table 3.
  • the “reference value” is a value based on the standard values specified in JIS H 4000, 4040, 4080, 4100, 4140, etc., and the lower limit value set based on the overall standard values of the 6061-T6 material. Show.
  • the target value of nickel is 0.025 at% to 1.0 at%
  • the strength generally increases as the amount of Ni increases.
  • the tensile elongation at break is the test material No. 1 in which the target value of nickel is 1.0 at%. 5 was below the reference value.
  • the amount of Ni in the aluminum alloy material according to the present invention is suitably 0.025 to 1.0 at% (about 0.05 to 2.3 mass%), and the nickel solid solubility limit (about 0.3 at%) is satisfied. In consideration, it has been confirmed that it is effective to set the amount to 0.025 to 0.3 at% or 0.3 at% or more depending on the required mechanical properties.

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  • Engineering & Computer Science (AREA)
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Abstract

La présente invention concerne un matériau d'alliage d'aluminium de système Al-Mg-Si qui possède aussi bien une résistance élevée qu'une tenue à la corrosion satisfaisante. Le matériau d'alliage d'aluminium de système Al-Mg-Si contient de 0,1 % en masse à 2,0 % en masse (inclus) de Si, de 0,3 % en masse à 1,5 % en masse (inclus) de Mg, de 0,05 % en masse à 3,0 % en masse (inclus) de Cu, et une quantité supérieure à 0,05 % en masse mais inférieure ou égale à 2,3 % en masse de Ni, tout en contenant éventuellement un ou plusieurs éléments qui sont choisis dans le groupe constitué par Fe, Mn, Cr, Zn et Ti dans une quantité inférieure ou égale à 1,0 % en masse, le reste étant constitué d'Al et d'impuretés inévitables.
PCT/JP2019/001614 2018-03-01 2019-01-21 Matériau d'alliage d'aluminium de système al-mg-si WO2019167469A1 (fr)

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WO2021153412A1 (fr) * 2020-01-30 2021-08-05 住友電気工業株式会社 Alliage d'aluminium, fil en alliage d'aluminium, élément en alliage d'aluminium et boulon
US20230067206A1 (en) * 2021-08-31 2023-03-02 GM Global Technology Operations LLC Aluminum alloy for casting high-strength and high electrically conductive components
WO2023068167A1 (fr) * 2021-10-20 2023-04-27 株式会社Uacj Tube à trous multiples extrudé et son procédé de production
WO2023209810A1 (fr) * 2022-04-26 2023-11-02 日本軽金属株式会社 Alliage al-mg-si-ni et matériau d'alliage al-mg-si-ni
JP7422539B2 (ja) 2019-12-26 2024-01-26 堺アルミ株式会社 熱伝導性、導電性ならびに強度に優れたアルミニウム合金圧延材およびその製造方法

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