Effect of cryogenic treatment on microstructure and properties of 5083Al-Mg alloy

doi:10.13251/j.issn.0254-6051.2023.10.030

Abstract

Abstract: Effect of cryogenic treatment time on tensile properties and hardness of 5083Al-Mg alloy was studied. The results show that the tensile strength of the 5083Al-Mg alloy increases with prolong of the cryogenic treatment time within 0-72 h. It is unfavorable to further improve the tensile strength of the alloy by excessively extending the cryogenic treatment time. Comprehensive analysis of the experimental results reveal that the preferable cryogenic treatment time is 12-24 h to improve mechanical properties of the alloy. The mechanism of improving the strength and hardness of the alloy is that the lattice distortion, dislocation multiplication and twine occur in the process of cryogenic treatment, accompanied by the dispersed precipitation of Al₃Mg₂ phase.

Key words: Al-Mg alloy, cryogenic treatment, microstructure, mechanical properties

CLC Number:

Jin Fangwei, Ji Xueying, Ma Xiuqin, Gao Yulan. Effect of cryogenic treatment on microstructure and properties of 5083Al-Mg alloy[J]. Heat Treatment of Metals, 2023, 48(10): 198-201.

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