A high-strength wear-resistant aluminum alloy profile for high-speed rail and its preparation method

An aluminum alloy profile and aluminum alloy technology, applied in the field of aluminum alloy, can solve the problems of low strength, poor wear resistance, and affecting the overall performance of high-speed iron, so as to increase strength, improve grain distribution, and avoid non-equilibrium structure and coarse precipitated phase Effect

Active Publication Date: 2020-07-03
ANHUI XIN FA ALUMINUM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the improvement of people's performance requirements for aluminum alloy profiles, at present, aluminum alloy profiles for high-speed rail have defects of low strength and poor wear resistance, which affect the overall performance of high-speed rail.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A high-strength and wear-resistant aluminum alloy profile for high-speed iron proposed by the present invention includes an aluminum alloy substrate and a ceramic coating. The aluminum alloy substrate includes the following components by mass fraction: Li: 0.8%, Mg: 0.6%, Zn: 2.8%, Cu: 0.35%, Mn: 0.28%, Si: 0.5%, B: 0.02%, Fe: 0.1%, Cr: 0.3%, Ti: 0.1%, Ni: 0.16%, Co: 0.06%, Zr: 0.12%, V: 0.15%, Nb: 0.02%, Sc: 0.08%, Ce: 0.12%, Pr: 0.02%, Er: 0.08%, and the rest are Al and unavoidable impurities.

[0018] Wherein, the raw material of ceramic coating is nano-ceramic powder, and the raw material of nano-ceramic powder comprises by weight: 15 parts of Al 2 o 3 , 12 parts of NiO, 10 parts of SiC, 15 parts of TiC, 10 parts of BN.

[0019] The present invention also proposes a method for preparing a high-strength wear-resistant aluminum alloy profile for high-speed rail, comprising the following steps:

[0020] S1. Melting the raw materials to obtain the alloy liquid, and o...

Embodiment 2

[0024] A high-strength and wear-resistant aluminum alloy profile for high-speed iron proposed by the present invention includes an aluminum alloy substrate and a ceramic coating. The aluminum alloy substrate includes the following components by mass fraction: Li: 0.55%, Mg: 0.9%, Zn: 3.2%, Cu: 0.22%, Mn: 0.42%, Si: 0.35%, B: 0.08%, Fe: 0.2%, Cr: 0.18%, Ti: 0.25%, Ni: 0.08%, Co: 0.15%, Zr: 0.18%, V: 0.08%, Nb: 0.08%, Sc: 0.02%, Ce: 0.06%, Pr: 0.08%, Er: 0.16%, and the rest are Al and unavoidable impurities.

[0025] Wherein, the raw material of the ceramic coating is nano-ceramic powder, and the particle size of the nano-ceramic powder is 50-80nm;

[0026] The raw material of nano-ceramic powder comprises by weight: 25 parts of Al 2 o 3 , 6 parts of NiO, 20 parts of SiC, 8 parts of TiC, 20 parts of BN.

[0027] The present invention also proposes a method for preparing a high-strength wear-resistant aluminum alloy profile for high-speed rail, comprising the following steps: ...

Embodiment 3

[0032]A high-strength wear-resistant aluminum alloy profile for high-speed iron proposed by the present invention includes an aluminum alloy substrate and a ceramic coating. The aluminum alloy substrate includes the following components in terms of mass fraction: Li: 0.68%, Mg: 0.75%, Zn: 3%, Cu: 0.3%, Mn: 0.35%, Si: 0.42%, B: 0.05%, Fe: 0.15%, Cr: 0.24%, Ti: 0.18%, Ni: 0.12%, Co: 0.09%, Zr: 0.15%, V: 0.12%, Nb: 0.06%, Sc: 0.06%, Ce: 0.09%, Pr: 0.05%, Er: 0.12%, and the rest are Al and unavoidable impurities.

[0033] Wherein, the raw material of the ceramic coating is nano-ceramic powder, and the particle size of the nano-ceramic powder is 60-80nm;

[0034] The raw material of nano-ceramic powder comprises by weight: 20 parts of Al 2 o 3 , 9 parts of NiO, 15 parts of SiC, 12 parts of TiC, 15 parts of BN.

[0035] The present invention also proposes a method for preparing a high-strength wear-resistant aluminum alloy profile for high-speed rail, comprising the following ste...

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Abstract

The invention discloses a high-strength wear-resisting aluminum alloy profile applied to a high-speed railway and a preparation method of the high-strength wear-resisting aluminum alloy profile. The aluminum alloy profile comprises the following components: Mg, Li, Zn, Cu, Mn, Si, Fe, Cr, Ti, Ni, Zr, V, Nb, Sc, Ce, Eu, Er and the balance of Al and inevitable impurities. According to the high-strength wear-resisting aluminum alloy profile applied to the high-speed railway and the preparation method of the high-strength wear-resisting aluminum alloy profile disclosed by the invention, the obtained aluminum alloy profile is large in strength, hardness and toughness, also good in corrosion resistance and wear resistance, good in machinability and long in service life.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a high-strength wear-resistant aluminum alloy profile for high-speed rail and a preparation method thereof. Background technique [0002] Due to its high specific strength, good processing performance, strong corrosion resistance and environmental protection performance, aluminum profiles are widely used in the field of vehicle manufacturing, and can effectively improve the manufacturing efficiency and service life of vehicles. With the improvement of people's requirements on the performance of aluminum alloy profiles, at present, aluminum alloy profiles for high-speed rail have defects of low strength and poor wear resistance, which affect the overall performance of high-speed rail. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a high-strength wear-resistant aluminum alloy profil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C23C24/10
CPCC22C21/10C22C2204/00C23C24/10
Inventor 唐开健李杰王超孙金东
Owner ANHUI XIN FA ALUMINUM PROD
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