WO2013165069A1 - Alliage d'aluminium pour forgeage à l'état semi-solide - Google Patents

Alliage d'aluminium pour forgeage à l'état semi-solide Download PDF

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Publication number
WO2013165069A1
WO2013165069A1 PCT/KR2012/011277 KR2012011277W WO2013165069A1 WO 2013165069 A1 WO2013165069 A1 WO 2013165069A1 KR 2012011277 W KR2012011277 W KR 2012011277W WO 2013165069 A1 WO2013165069 A1 WO 2013165069A1
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Prior art keywords
aluminum alloy
forging
elongation
strength
weight
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PCT/KR2012/011277
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English (en)
Korean (ko)
Inventor
하태수
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Rheoforge Co Ltd
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Rheoforge Co Ltd
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Publication of WO2013165069A1 publication Critical patent/WO2013165069A1/fr
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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
    • 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
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
    • 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
    • C22F1/05—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 of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions

Definitions

  • One embodiment of the present invention relates to an aluminum alloy for reaction hard forging, and is an aluminum alloy for reaction hard forging having improved mechanical properties in tensile strength and elongation to be molded by reaction forging.
  • 6000 series aluminum alloys used for industrial and structural applications such as glass greenhouses, building materials, automobile parts, and mechanical parts, and hot forging aluminum alloys such as 6061 and 6082, which are typically used, are age hardened of magnesium silicate The effect has a relatively high mechanical strength.
  • such a 6000-based aluminum alloy is composed of homogeneous heat treatment, extrusion or hot working, and aging treatment after casting, followed by forging, joining, and machining.
  • the homogeneous heat treatment temperature is a high temperature homogeneous treatment in the temperature range directly under the solidus line, in order to increase the high capacity of magnesium and silicon element in the base to increase the amount of deposition of the magnesium silicate which affects the strength during the aging treatment. .
  • Conventional 6000 aluminum alloy for hot forging is weight%, Si: 1.13%, Fe: 0.23%, Cu: 0.04%, Mn: 0.44%, Mg: 1.17%, Cr: 0.25%, Zn: 0.01%, Ti: It is composed of 0.06% and balance Al, and has mechanical properties of tensile strength of 330 ⁇ 337MPa, yield strength of 296 ⁇ 302MPa and elongation of 11.7 ⁇ 13.6%.
  • the conventional 6000-based hot forging aluminum alloy has obtained high strength properties of the average tensile strength of 334MPa, yield strength 298MPa through the age hardening effect of the magnesium silicate, but stable material as the alloy almost depends on the total import There is a need for development in terms of supply as well as cost reduction.
  • the present invention by adjusting the amount of alloying elements, such as Si, Cu, Mn, Mg in consideration of the problems of the prior art as described above, the reaction height having mechanical properties improved tensile strength and elongation compared to the existing material during the reaction forging
  • the main purpose is to provide forging aluminum alloys.
  • the present invention in order to achieve the above technical problem, in the 6000-based reaction solid forging aluminum alloy, by weight%, Si: 0.6 ⁇ 1.2%, Fe: 0.2% or less, Cu: 0.1 ⁇ 0.4%, Mn: 0.2 It provides an aluminum alloy for reaction solid forging, characterized in that composed of ⁇ 0.4%, Mg: 0.6 ⁇ 1.0%, Cr: 0.2 ⁇ 0.4%, Zn: 0.2% or less and the balance Al.
  • the aluminum alloy is characterized in that the tensile strength of 330MPa to 350MPa, yield strength of 300MPa or more, elongation of 15%. Moreover, the said aluminum alloy has the characteristic also that it is more than hardness 80HB.
  • the present invention has excellent tensile strength and elongation as compared with the conventional 6000-based hot forging aluminum alloy has a design weight reduction effect, and improves fuel economy when used for automotive structures through weight saving and thereby reducing air pollution It works.
  • 1 is a graph showing the relationship between the composition ratio and physical properties of Si constituting the reaction forging aluminum alloy according to an embodiment of the present invention.
  • FIG. 2 is a graph showing the relationship between the composition ratio and physical properties of Cu constituting the aluminum alloy for reaction solid forging according to an embodiment of the present invention.
  • 3 is a graph showing the relationship between the composition ratio and physical properties of Mn constituting the aluminum alloy for reaction solid forging according to an embodiment of the present invention.
  • the reaction solid forging method is a method of forming and producing a complex-shaped product at a time in a solid-liquid coexistence state by dissolving a raw material, putting it into a mold, and then performing solidification and pressurization by an appropriate mechanism.
  • the reaction solidification forging method has a high material adhesion rate by pressurization, a fast solidification rate, a fast production speed, and can fundamentally solve shrinkage defects occurring during material solidification, thereby enabling mass production of large products.
  • the present invention relates to an aluminum alloy for reaction solid forging that can be used in the reaction solid forging method as described above, appropriately control the content of Si, Cu, Mn, Mg in the components constituting the 6000-based reaction solid forging aluminum alloy By minimizing the shrinkage due to solidification through the reaction solid forging to have an effect of improving the elongation to form an aluminum alloy having a higher strength mechanical properties.
  • the content of Si constituting the reaction solid forging aluminum alloy according to the present invention is 0.6 to 1.2% by weight, lower than 1.13% by weight in the existing hot forging aluminum alloy, and the content of Cu is 0.1 to 0.4% by weight.
  • Mn content is 0.2 ⁇ 0.4% by weight, lower than 0.44% by weight in the existing hot forging aluminum alloy
  • Mg content is 0.6 ⁇ 1.0% by weight It is lower than 1.17% by weight in the existing hot forging aluminum alloy.
  • Table 1 ingredient Si Fe Cu Mn Mg Cr Zn Al Creation costs 0.6 ⁇ 1.2 0.2 or less 0.1-0.4 0.2-0.4 0.6 to 1.0 0.2-0.4 0.2 Bal.
  • composition ratio in Table 1 is all weight%.
  • Si is the most widely used alloying element of aluminum alloy because of its high latent heat of solidification and very high inherent hardness of silicon (Si), and it shows the process silicon structure at an amount of 12.6% or less by weight. The aspects of over and elongation should be considered.
  • the elongation is continuously increased at 1.2%, while the elongation is rapidly decreased when Mg exceeds 0.7% when Si is 1.2%. That is, in the present invention, when the Si 1.2%, Mn 0.2% ⁇ 0.3% ⁇ 0.4% ⁇ 0.5%, Cu 0.3% ⁇ 0.4% ⁇ 0.5%, Mg 0.6% ⁇ 0.7% ⁇ 0.8% According to the results sequentially added to each, it is preferred to be 0.6 to 1.2% by weight so as to maximize the elongation while maintaining high formability.
  • Fe is a representative impurity element, and when it is contained 0.2 wt% or more, it forms an intermetallic compound and degrades high temperature formability.
  • Cu is a major addition element that improves strength and bendability and increases strength by age hardening during baking.
  • the strength and elongation analysis is performed when the Si fluctuation range is 1.1% to 1.2%, the strength is increased in the Cu 0.3% to 0.4% section, while the Cu is 0.4% to It can be seen that the intensity decreases in the 0.5% section. That is, in the present invention, when the Cu content is 0.3% by weight or less, the strength improvement is insignificant. When the content of Cu is 0.4% by weight or more, the strength is improved, but the elongation is lowered.
  • Mn is an additive element for improving the strength by miniaturizing the crystal grains through the formation of Mn 3 Al compound, when the addition of less than 0.2% by weight, the strength is insignificant; In order to improve a loss rate, it is preferable to add as little as possible, and it is 0.5 weight% or less in especially preferable range.
  • Mn increases strength and elongation at 0.20% to 0.30%, but yields and tensile strengths are not significantly changed in 0.30% ⁇ 0.40% ⁇ 0.50%, but elongation is continuously increased. Done.
  • Mg is an element added for solid solution hardening. It increases the strength of the matrix structure and improves the strength as the content increases, but when it exceeds 1.0% by weight, the Mg decreases the formability and the elongation rapidly decreases. When added in an amount of less than or equal to weight%, since the solid solution hardening effect is lowered, it is preferably added in the above range.
  • the Mg and Si master alloys simultaneously increase 0.50% to 0.47% section strength and elongation, whereas Mg alone results in a fine 0.62% to 0.81% section strength. It can be seen that it is increased or maintained. Therefore, as a more preferable range in this invention, it is 0.62%-0.81% range.
  • Cr is an element added to suppress the formation and growth of the recrystallization layer and improve the high temperature formability. When it is added in an amount of 0.2 wt% or less, the high temperature formability is lowered. It is desirable to limit the above range because it produces a rather high temperature formability rather greatly reduced.
  • Zn is for improving strength without losing Cu and double corrosion resistance.
  • Zn is preferably 0.2% by weight or less.
  • reaction high aluminum alloy according to the present invention made of such a composition is manufactured through a known reaction high forging process to be commercialized.
  • the aluminum alloy in the following examples is the result of experiment using AA6061 as an example.
  • the invention materials A to F consisting of the composition of the composition as shown in Table 2 through the reaction forging process and the same size Made of test pieces.
  • Table 2 the invention A is Si
  • invention B is Fe
  • invention C is Mn
  • invention D is Mg
  • invention E is Cu
  • invention F is different based on Si, Cu, Mn, Mg
  • the physical properties of aluminum alloys were tested by varying the weight of the elements.
  • composition ratio in Table 2 is all weight%.
  • Tensile strength and yield strength were measured using a tensile tester having the same maximum load and test speed, respectively, for comparing the properties of the alloy of the present invention and the inventive materials A to F having the composition ratio.
  • Tensile strength (TS), yield strength (YS), and elongation (ES) of the reaction alloy forging aluminum alloy obtained through the above experiments were 330 MPa to 350 MPa, 300 MPa, and 15%, respectively. Indicated.
  • the present invention by controlling the amount of alloying elements, such as Si, Cu, Mn, Mg, excellent tensile strength and elongation compared to the conventional 6000-based hot forging aluminum alloy, the design weight reduction effect There is an effect to improve the fuel economy and reduce the air pollution accordingly when used for automobile structures through weight reduction.
  • alloying elements such as Si, Cu, Mn, Mg

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Forging (AREA)
PCT/KR2012/011277 2012-05-03 2012-12-21 Alliage d'aluminium pour forgeage à l'état semi-solide Ceased WO2013165069A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120046938A KR20130123652A (ko) 2012-05-03 2012-05-03 반응고 단조용 알루미늄 합금
KR10-2012-0046938 2012-05-03

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110541092A (zh) * 2019-08-29 2019-12-06 金榀精密工业(苏州)有限公司 高耐磨铝合金汽车零部件制备方法
EP3737527A4 (fr) * 2018-01-12 2021-10-20 Accuride Corporation Alliages d'aluminium destinés à des applications telles que des roues et procédés de fabrication
CN114107750A (zh) * 2020-08-26 2022-03-01 宝山钢铁股份有限公司 一种薄带连铸高性能6xxx铝合金板带的制备方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9890443B2 (en) * 2012-07-16 2018-02-13 Arconic Inc. 6XXX aluminum alloys, and methods for producing the same
KR102259617B1 (ko) * 2020-01-23 2021-06-03 서진산업 주식회사 스포크 내구 성능 강화 스타일드 휠
CN112226657B (zh) * 2020-09-28 2022-02-08 广东坚美铝型材厂（集团）有限公司 电机壳铝型材的制备方法、电机壳及电机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000282162A (ja) * 1999-03-30 2000-10-10 Nippon Steel Corp 腐食疲労強度に優れたアルミニウム合金押出材
JP2000303134A (ja) * 1999-04-20 2000-10-31 Furukawa Electric Co Ltd:The セミソリッド加工用アルミニウム基合金及びその加工部材の製造方法
KR20020096279A (ko) * 2001-06-19 2002-12-31 현대자동차주식회사 알루미늄 합금
KR20090028954A (ko) * 2007-09-17 2009-03-20 현대모비스 주식회사 열간단조용 고강도 알루미늄 합금
JP2010116594A (ja) * 2008-11-12 2010-05-27 Kobe Steel Ltd 曲げ性に優れたＡｌ−Ｍｇ−Ｓｉ系アルミニウム合金板

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000282162A (ja) * 1999-03-30 2000-10-10 Nippon Steel Corp 腐食疲労強度に優れたアルミニウム合金押出材
JP2000303134A (ja) * 1999-04-20 2000-10-31 Furukawa Electric Co Ltd:The セミソリッド加工用アルミニウム基合金及びその加工部材の製造方法
KR20020096279A (ko) * 2001-06-19 2002-12-31 현대자동차주식회사 알루미늄 합금
KR20090028954A (ko) * 2007-09-17 2009-03-20 현대모비스 주식회사 열간단조용 고강도 알루미늄 합금
JP2010116594A (ja) * 2008-11-12 2010-05-27 Kobe Steel Ltd 曲げ性に優れたＡｌ−Ｍｇ−Ｓｉ系アルミニウム合金板

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3737527A4 (fr) * 2018-01-12 2021-10-20 Accuride Corporation Alliages d'aluminium destinés à des applications telles que des roues et procédés de fabrication
US11420249B2 (en) 2018-01-12 2022-08-23 Accuride Corporation Aluminum wheels and methods of manufacture
CN110541092A (zh) * 2019-08-29 2019-12-06 金榀精密工业(苏州)有限公司 高耐磨铝合金汽车零部件制备方法
CN114107750A (zh) * 2020-08-26 2022-03-01 宝山钢铁股份有限公司 一种薄带连铸高性能6xxx铝合金板带的制备方法

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