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
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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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