Rare earth alloying Al-Cu-Mg-Fe-Ni high-strength and heat-resistance aluminum alloy

An al-cu-mg-fe-ni, rare earth alloy technology, applied in the field of non-ferrous metals, can solve the problems of rare earth Nd, such as no related reports, to improve the mechanical properties at room temperature and high temperature heat resistance, excellent comprehensive performance, strong The effect of thermal stability

Inactive Publication Date: 2015-08-26
SHANDONG NANSHAN ALUMINUM
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  • Abstract
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AI Technical Summary

Problems solved by technology

A large number of literatures have reported the effects of different rare earth elements on the structure and properties of aluminum alloys, but there are no relevant reports on the application of rare earth Nd in Al-Cu-Mg-Fe-Ni alloys

Method used

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  • Rare earth alloying Al-Cu-Mg-Fe-Ni high-strength and heat-resistance aluminum alloy
  • Rare earth alloying Al-Cu-Mg-Fe-Ni high-strength and heat-resistance aluminum alloy
  • Rare earth alloying Al-Cu-Mg-Fe-Ni high-strength and heat-resistance aluminum alloy

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preparation example Construction

[0014] The preparation methods of the alloys of the examples and comparative examples of the present invention are configured according to the designed alloy components, and the ingots are obtained by smelting in a resistance crucible furnace.

[0015] The mass percent content ranges of each element in the alloy are: Cu 2.6~3.5%, Mg 1.3~1.8%, Fe 0.1~0.8%, Ni 0.1~0.8%, Nd 0.05~0.50%, Mn 0.1~0.25%, Zr 0.1% ~0.25%, and the balance is Al; Fe and Ni elements in the alloy are added in an equal ratio (mass ratio) of 1:1.

Embodiment 1

[0017] The alloy composition is (weight percent): Cu 2.6%, Mg 1.7%, Fe 0.6%, Ni 0.6%, Nd 0.17%, Mn 0.15%, Zr 0.15%, and the balance is Al. The extruded rods were solution treated at 530°C for 1.5 h and then water quenched at room temperature. The quenched samples were immediately aged in an air circulation furnace within 0.5 h to make the alloy reach the peak aging state. The aging system was 195°C× 18 h. The room temperature and high temperature mechanical properties data of the obtained alloy are shown in Table 1.

Embodiment 2

[0019] The alloy composition is (weight percent): Cu 3.0%, Mg 1.65%, Fe 0.80%, Ni 0.80%, Nd 0.20%, Mn 0.15%, Zr 0.15%, and the balance is Al. The extruded rods were solution treated at 535°C for 1 h and then water quenched at room temperature. The quenched samples were immediately aged in an air circulation furnace within 1 h to make the alloy reach the peak aging state. The aging system was 195°C× 20 h. The room temperature and high temperature mechanical properties data of the obtained alloy are shown in Table 1.

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Abstract

The invention discloses a rare earth alloying Al-Cu-Mg-Fe-Ni high-strength and heat-resistance aluminum alloy. The aluminum alloy comprises the following components in percentage by weight: 2.6-3.5% of Cu, 1.3-1.8% of Mg, 0.1-0.8% of Fe, 0.1-0.8% of Ni, 0.05-0.5% of Nd, 0.1-0.25% of Mn, and 0.1-0.25% of Zr. Through mutual matching and combined actions of high Cu, low Fe, Ni and rare earth Nd, the room-temperature mechanical performance and high-temperature heat resistance of the alloy are synchronously improved, and the alloy obtains excellent comprehensive performance.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metals, in particular to a rare earth alloyed Al-Cu-Mg-Fe-Ni high-strength heat-resistant aluminum alloy. Background technique [0002] Al-Cu-Mg-Fe-Ni aluminum alloy has good heat resistance, high plasticity and good processability in hot state, and is widely used in the production of important load-bearing components with high strength at high temperature. 2618A in Europe and America, AK4-1 in Russia and common 2A70, 2D70 and 2A80 are all Al-Cu-Mg-Fe-Ni alloys. In this type of alloy, S(Al 2 CuMg) phase is the main strengthening phase, and its high temperature stability is good, which can make the alloy obtain good room temperature performance and high temperature performance. Therefore, the alloy should obtain as much S(Al 2 CuMg) phase. According to S(Al 2 The strict stoichiometric ratio chemical equation of CuMg) phase shows that in order to obtain S(Al 2 CuMg) correspondingly makes Cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/16
Inventor 任欣丁清伟邵宇光张军利姜魁光纵荣荣张洪辉王玉林
Owner SHANDONG NANSHAN ALUMINUM
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