Heat treatment and space environment performance of high strength aluminum alloy parts by selective laser melting

doi:10.13251/j.issn.0254-6051.2022.07.001

Abstract

Abstract: High-strength aluminum alloy specimens of aluminum-magnesium-scandium-zirconium system were prepared by adopting the additive manufacturing technologys of selective laser melting (SLM). The evolution of the microstructure and mechanical properties of the specimens during annealing and solution aging treatment were studied. In addition, high and low temperature cycle experiments were carried out on the specimens to simulate the temperature change of the space environment, and then the evolution of mechanical properties after high and low temperature cycles were studied. The results show that for the high-strength aluminum alloy prepared by the SLM, the annealing treatment can significantly improve its mechanical properties. After the high and low temperature cycle experiment simulating the space environment, mechanical properties of the specimens remain unchanged, so it meets the performance requirements under the space alternating temperature.

Key words: high strength aluminum alloy, laser selective melting, heat treatment, space environment, mechanical properties

CLC Number:

Jiang Chao, Jia Dongyong, Zhou Zhiyong, Tian Zheng, Guo Xingye, Wang Zhe, Han Xiuzhu. Heat treatment and space environment performance of high strength aluminum alloy parts by selective laser melting[J]. Heat Treatment of Metals, 2022, 47(7): 1-8.

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