WO2018235272A1 - Alliage d'aluminium et procédé de moulage d'alliage d'aluminium - Google Patents

Alliage d'aluminium et procédé de moulage d'alliage d'aluminium Download PDF

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Publication number
WO2018235272A1
WO2018235272A1 PCT/JP2017/023240 JP2017023240W WO2018235272A1 WO 2018235272 A1 WO2018235272 A1 WO 2018235272A1 JP 2017023240 W JP2017023240 W JP 2017023240W WO 2018235272 A1 WO2018235272 A1 WO 2018235272A1
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Prior art keywords
aluminum alloy
weight
alloy
elongation
less
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PCT/JP2017/023240
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English (en)
Japanese (ja)
Inventor
敦夫 鏑木
宮尻　聡
大城　直人
山田　毅
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株式会社大紀アルミニウム工業所
株式会社シマノ
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Application filed by 株式会社大紀アルミニウム工業所, 株式会社シマノ filed Critical 株式会社大紀アルミニウム工業所
Priority to CN201780091658.XA priority Critical patent/CN110709526A/zh
Priority to PCT/JP2017/023240 priority patent/WO2018235272A1/fr
Priority to JP2017548236A priority patent/JP6267408B1/ja
Priority to MYPI2019006987A priority patent/MY181256A/en
Publication of WO2018235272A1 publication Critical patent/WO2018235272A1/fr
Priority to PH12019502327A priority patent/PH12019502327A1/en

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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
    • C22C21/02—Alloys based on aluminium with silicon 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
    • C22F1/043—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 silicon as the next major constituent

Definitions

  • the present invention relates to an aluminum alloy excellent in mechanical properties and an aluminum alloy cast article using the alloy.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-27169
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-27169
  • As an aluminum alloy 8.5 to 9.5% of Si, 0.20% or less of Cu, 0.20 to 0.40% of Mg, and 0.6% or less of Fe on a weight basis .30 to 0.50% of Mn, 0.05 to 0.15% of Ti, 0.01 to 0.025% of Sr, and 0.15% or less of Zn, the balance being Al
  • An aluminum alloy is disclosed. According to this technology, it is believed that an aluminum alloy having high strength and high toughness can be provided so that it can withstand breakage even in a severe use environment (than the use environment of conventional materials).
  • the present invention is an aluminum alloy capable of balancing mechanical properties, in particular tensile strength, elongation, 0.2% proof stress and hardness at a high level, and also for expanding applications mainly in transport equipment generally. It is an object of the present invention to provide an aluminum alloy that can be economically and sustainably produced using recycled raw materials such as scrap, and an aluminum alloy cast article made of the alloy.
  • Cu is contained in the range of 0.75% by weight or more and 1.25% by weight or less
  • Mg is also contained in the range of more than 0.50% by weight to 0.80% by weight or less
  • Cr containing 0.10% by weight or more and 0.30% by weight or less of the effect of improving the corrosion resistance is contained. It is possible to minimize the deterioration of the corrosion resistance of the aluminum alloy caused by the inclusion of Cu.
  • the ingot of an aluminum alloy excellent in castability and mechanical properties is recycled mainly by containing the above six types of elemental components in a predetermined ratio, and their interaction with each other. It can be economically and simply manufactured using raw materials.
  • the aluminum alloy of the present invention it is preferable to further contain 0.30% by weight or less of Ti based on the total weight of the alloy.
  • the crystal grains of the alloy can be refined to suppress casting cracks more effectively, and mechanical properties, in particular, elongation can be improved.
  • At least one selected from Na, Sr and Ca is further added so as to be 30 to 200 ppm with respect to the total weight of the alloy, or Sb relative to the total weight of the alloy It is preferable to add so as to be 0.05 to 0.20% by weight. By so doing, particles of eutectic Si can be made finer, and the toughness and strength of the aluminum alloy can be further improved. Furthermore, it is also preferable to add B to 1 to 50 ppm with respect to the weight of the entire alloy. By so doing, the crystal grains of the aluminum alloy can be made finer even if the amount of Si is small or the casting method with a slow cooling rate is used, and as a result, the elongation of the aluminum alloy is improved. Can.
  • a second invention of the present invention is an aluminum alloy cast article comprising the aluminum alloy according to the first invention.
  • the aluminum alloy cast article comprising the aluminum alloy of the present invention can be mass-produced with good castability, and because mechanical characteristics, especially tensile strength, elongation, 0.2% proof stress and hardness are balanced at high dimensions, for example It can be suitably used in new applications of cast articles that require weight reduction in general transportation equipment where the application of aluminum alloy cast articles is expanding.
  • the present invention is an aluminum alloy capable of balancing mechanical properties, in particular tensile strength, elongation, 0.2% proof stress and hardness at a high level, and also for expanding applications mainly in transport equipment generally, It is possible to provide an aluminum alloy that can be economically and sustainably produced using recycled raw materials such as scrap, and an aluminum alloy cast article made of the alloy.
  • the aluminum alloy of the present invention is, by weight, 0.75% ⁇ Cu ⁇ 1.25%, 7.5% ⁇ Si ⁇ 8.5%, 0.50% ⁇ Mg ⁇ 0.80%, 0.20 It contains% ⁇ Fe ⁇ 0.50%, 0.30% ⁇ Mn ⁇ 0.50%, 0.10% ⁇ Cr ⁇ 0.30%, and the balance is roughly constituted by Al and unavoidable impurities. The characteristics of each element will be described below.
  • Cu copper
  • the content of Cu relative to the weight of the entire aluminum alloy is preferably in the range of 0.75% by weight or more and 1.25% by weight or less as described above. If the content ratio of Cu is less than 0.75% by weight, the above-mentioned mechanical property improvement effect can not be obtained, and conversely, if the content ratio of Cu exceeds 1.25% by weight, the main In the T6 treated material (details will be described later), the tensile strength and the elongation become insufficient.
  • Si silicon
  • the content of Si relative to the weight of the entire aluminum alloy is preferably in the range of 7.5% by weight or more and 8.5% by weight or less as described above.
  • the content ratio of Si is less than 7.5% by weight, it is difficult to secure the fluidity of the molten metal, and in the case of forming by ordinary die casting generally used widely as the casting method, it is large Application to parts is hindered, and conversely, when the content of Si exceeds 8.5% by weight, the castability is improved but the elongation of the alloy is significantly reduced.
  • Mg manganesium mainly exists as a solid solution in an Al base material in an aluminum alloy or exists as Mg 2 Si and imparts yield strength and hardness to the aluminum alloy while elongation is significantly reduced by the inclusion of an excessive amount Together with castability and corrosion resistance.
  • the content ratio of Mg to the weight of the entire aluminum alloy is preferably in the range of more than 0.50% by weight and 0.80% by weight or less as described above. When the content ratio of Mg is 0.5% by weight or less, it becomes possible to secure 0.2% proof stress and hardness of the alloy regardless of the presence or absence of heat treatment, while the content ratio of Mg is 0.8 If it exceeds the weight percent, the elongation of the alloy will be significantly reduced.
  • Fe iron
  • the content ratio of Fe with respect to the weight of the entire aluminum alloy is preferably 0.20% by weight or more, as described above, in consideration of using a recycled material such as scrap for a part of the material from the viewpoint of recycling.
  • the upper limit is 0.50% by weight as described above It is preferable that it is the following.
  • Mn manganese
  • Mn is mainly for preventing seizing between an aluminum alloy and a mold at the time of casting such as die casting, as in the case of Fe described above.
  • the upper limit of the content ratio of Mn to the weight of the entire aluminum alloy is suppressed to 0.50 wt% or less There is.
  • the lower limit of the content of Mn is preferably 0.30% by weight or more, as described above, in order to exert the above-mentioned anti-seizure effect remarkably.
  • Cr chromium
  • the content of Cr relative to the weight of the entire aluminum alloy is preferably in the range of 0.10% by weight or more and 0.30% by weight or less as described above. If the content ratio of Cr is less than 0.10% by weight, the above-mentioned effects can not be sufficiently obtained, and conversely, if the content ratio of Cr exceeds 0.30% by weight, it is added more Even if the amount is increased, the addition effect can not be improved.
  • Ti titanium
  • This Ti has an effect of refining crystal grains, and is generally an element which can particularly improve elongation among suppression of casting cracks and mechanical properties.
  • the content of Ti with respect to the weight of the entire aluminum alloy is preferably in the range of 0.30% by weight or less. When the content ratio of Ti exceeds 0.30% by weight, it is difficult to melt the aluminum alloy, and there is a possibility that the unmelted portion is generated.
  • At least one selected from Na (sodium), Sr (strontium), Ca (calcium) and Sb (antimony) may be added as the improvement treatment material.
  • the improvement treatment material By adding such an improvement treatment material, particles of eutectic Si can be made finer, and the toughness and strength of the aluminum alloy can be further improved.
  • the addition ratio of the improved material to the total weight of the aluminum alloy is 30 to 200 ppm when the improved material is Na, Sr and Ca, and 0.05 to 0.20% by weight when Sb is used. It is preferable that it is a range.
  • the addition ratio of the improvement treatment material is less than 30 ppm (0.05% by weight in the case of Sb), it becomes difficult to refine the particles of eutectic Si in the aluminum alloy, conversely, the improvement treatment material
  • the addition ratio of is greater than 200 ppm (0.20% by weight in the case of Sb)
  • the particles of eutectic Si in the aluminum alloy are sufficiently finely divided, and addition is possible even if the addition amount is further increased It is because the effect does not rise.
  • B boron
  • B boron
  • the proportion of B added to the total weight of the aluminum alloy is preferably in the range of 1 to 50 ppm.
  • the addition ratio of B is less than 1 ppm, it is difficult to refine the crystal grains in the aluminum alloy, and conversely, when the addition ratio of B is more than 50 ppm, the crystal grains in the aluminum alloy are sufficient. The effect of addition is not improved even if the amount of addition is further increased.
  • raw materials are prepared in which the respective elemental components of Al, Cu, Si, Mg, Fe, Mn, and Cr are in the above-described predetermined ratio (necessary In accordance with the above, Ti and modified materials are added.
  • the raw material is put into a melting furnace such as a forging furnace-containing melting furnace or a closed melting furnace to melt these materials.
  • the molten raw material thus melted that is, the molten metal of the aluminum alloy, is subjected to a purification treatment such as dehydrogenation treatment and removal treatment, if necessary.
  • the refined molten metal is poured into a predetermined mold or the like and solidified to form a molten metal of an aluminum alloy into an alloy base metal ingot or the like.
  • tensile strength, elongation and 0.2% proof stress were measured by the following methods. That is, using an ordinary die casting machine with a clamping force of 135 tons (DC 135EL manufactured by Toshiba Machine Co., Ltd.), die casting is performed at an injection speed of 1.0 m / s and a casting pressure of 60 MPa. ASTM (American Society for Testing and Material) Round bar test piece conforming to the standard was prepared.
  • the T6 treatment is a heat treatment method in which reheating and artificial aging treatment are performed after the solution treatment.
  • the solution treatment after heating at 510 ° C. for 3 hours as this T6 treatment, it was water cooled (solution treatment), and further heated at 180 ° C. for 3 hours, then air cooled (artificial aging treatment).
  • the hardness was evaluated by the Rockwell hardness test according to Japanese Industrial Standard JIS G0202.
  • Table 1 shows the composition of an aluminum alloy manufactured by adjusting the alloy components other than Cu to a certain ratio within the scope of the present invention and changing the content ratio of Cu. And the mechanical properties (tensile strength, elongation, 0.2% proof stress and hardness).
  • the elongation of the alloy gradually decreases as the content of Cu increases, and in particular, when the content of Cu exceeds 1.25% by weight, the elongation becomes less than 5.0% in the T6 treated material. It is difficult to say that it is excellent in growth. For this reason, in the aluminum alloy of the present invention, the content of Cu is in the range of 0.75% by weight or more and 1.25% by weight or less. Alloys 1 and 2 in Table 1 are alloy compositions within the scope of the present invention, ie, example alloys, and alloy 9 is a JIS ADC 3 alloy representing a conventional material.
  • Table 2 shows the composition of the aluminum alloy manufactured by adjusting the alloy components other than Mg to a certain ratio within the range of the present invention and changing the content ratio of Mg. And the mechanical properties (tensile strength, elongation, 0.2% proof stress and hardness).
  • Cu is contained in the range of 0.75% by weight or more and 1.25% by weight or less, and Mg is also more than 0.50% by weight or more and 0.80% by weight or less Since it is contained in the range, not only the use of recycled raw materials such as scraps becomes possible, but also mechanical properties such as tensile strength, 0.2% proof stress and hardness can be improved. Moreover, while suppressing the content ratio of Cu which may deteriorate the corrosion resistance within the above range, Cr containing 0.10% by weight or more and 0.30% by weight or less of the effect of improving the corrosion resistance is contained. It is possible to minimize the deterioration of the corrosion resistance of the aluminum alloy caused by the inclusion of Cu.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Forging (AREA)

Abstract

La présente invention concerne : un alliage d'aluminium ayant un équilibre particulièrement bon de propriétés mécaniques, en particulier de résistance à la traction, allongement, limite conventionnelle d'élasticité à 0,2 % et dureté, qui peut être utilisé pour un nombre croissant d'applications, principalement dans le domaine de l'équipement de transport en général, et peut être produit de façon économique et durable au moyen de matériaux de départ recyclés tels que de la ferraille ; et une pièce moulée en alliage d'aluminium fabriquée à partir dudit alliage. À savoir, la présente invention concerne : un alliage d'aluminium caractérisé en ce qu'il contient, en % en masse, 0,75 % ≤ Cu ≤ 1,25 %, 7,5 % ≤ Si ≤ 8,5 %, 0,50 % < Mg ≤ 0,80 %, 0,20 % ≤ Fe ≤ 0,50 %, 0,30 % ≤ Mn ≤ 0,50 %, et 0,10 % ≤ Cr ≤ 0,30 %, le reste étant constitué d'Al et d'impuretés inévitables ; et un moulage en alliage d'aluminium de celui-ci.
PCT/JP2017/023240 2017-06-23 2017-06-23 Alliage d'aluminium et procédé de moulage d'alliage d'aluminium WO2018235272A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201780091658.XA CN110709526A (zh) 2017-06-23 2017-06-23 铝合金及铝合金铸造品
PCT/JP2017/023240 WO2018235272A1 (fr) 2017-06-23 2017-06-23 Alliage d'aluminium et procédé de moulage d'alliage d'aluminium
JP2017548236A JP6267408B1 (ja) 2017-06-23 2017-06-23 アルミニウム合金およびアルミニウム合金鋳物品
MYPI2019006987A MY181256A (en) 2017-06-23 2017-06-23 Aluminum alloy and aluminum alloy casting
PH12019502327A PH12019502327A1 (en) 2017-06-23 2019-10-11 Aluminum alloy and aluminum alloy casting

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Application Number Priority Date Filing Date Title
PCT/JP2017/023240 WO2018235272A1 (fr) 2017-06-23 2017-06-23 Alliage d'aluminium et procédé de moulage d'alliage d'aluminium

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WO2018235272A1 true WO2018235272A1 (fr) 2018-12-27

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CN112251655B (zh) * 2020-09-09 2022-07-01 科曼车辆部件系统(苏州)有限公司 一种高韧性液态模锻铸造铝合金及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1112705A (ja) * 1997-06-20 1999-01-19 Sumitomo Light Metal Ind Ltd 切削性に優れた高強度アルミニウム合金鍛造品の製造方法
JP2004277762A (ja) * 2003-03-13 2004-10-07 Nippon Light Metal Co Ltd 冷間加工用熱処理型アルミニウム合金素材の製造方法
WO2010086951A1 (fr) * 2009-01-27 2010-08-05 株式会社大紀アルミニウム工業所 Alliage d'aluminium pour coulée sous pression et pièce moulée constituée dudit alliage d'aluminium
WO2015151369A1 (fr) * 2014-03-31 2015-10-08 アイシン軽金属株式会社 Alliage d'aluminium et procédé de coulée sous pression
WO2016166779A1 (fr) * 2015-04-15 2016-10-20 株式会社大紀アルミニウム工業所 Alliage d'aluminium pour coulée sous pression et alliage d'aluminium coulé sous pression l'utilisant

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Publication number Priority date Publication date Assignee Title
DE19524564A1 (de) * 1995-06-28 1997-01-02 Vaw Alucast Gmbh Aluminiumguß-Legierung
CN107245612B (zh) * 2011-10-28 2019-04-16 美铝美国公司 高性能AlSiMgCu铸造合金
CN106048329A (zh) * 2016-06-30 2016-10-26 Sj技术股份有限公司 压铸用铝合金及利用其的铝合金铸造品的制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1112705A (ja) * 1997-06-20 1999-01-19 Sumitomo Light Metal Ind Ltd 切削性に優れた高強度アルミニウム合金鍛造品の製造方法
JP2004277762A (ja) * 2003-03-13 2004-10-07 Nippon Light Metal Co Ltd 冷間加工用熱処理型アルミニウム合金素材の製造方法
WO2010086951A1 (fr) * 2009-01-27 2010-08-05 株式会社大紀アルミニウム工業所 Alliage d'aluminium pour coulée sous pression et pièce moulée constituée dudit alliage d'aluminium
WO2015151369A1 (fr) * 2014-03-31 2015-10-08 アイシン軽金属株式会社 Alliage d'aluminium et procédé de coulée sous pression
WO2016166779A1 (fr) * 2015-04-15 2016-10-20 株式会社大紀アルミニウム工業所 Alliage d'aluminium pour coulée sous pression et alliage d'aluminium coulé sous pression l'utilisant

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CN110709526A (zh) 2020-01-17
JP6267408B1 (ja) 2018-01-24
JPWO2018235272A1 (ja) 2019-06-27
PH12019502327A1 (en) 2020-09-14

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