期刊
JOURNAL OF MAGNESIUM AND ALLOYS
卷 8, 期 3, 页码 793-798出版社
KEAI PUBLISHING LTD
DOI: 10.1016/j.jma.2019.10.003
关键词
Heat treatment; LPSO phases; Mechanical properties; Damping capacities
资金
- National Natural Science Foundation of China [51671063, 51771060, 51871068, 51971071]
- Heilongjiang Province Natural Science Foundation [LH2019E081, E2017030]
- Fundamental Research Funds for the Central Universities [HEUCFG201834]
- Harbin City Application Technology Research and Development Project [2017RAQXJ032]
- Project of Mudanjiang normal university [GP2020004]
- Domain Foundation of Equipment Advance Research of 13th Five-year Plan [61409220118]
The transformation of LPSO type in Mg-4Y-2Er-2Zn-0.6Zr during heat treatment and its influence on damping and mechanical properties are reported in this work. Prior to heat treatment, the alloy consisted of alpha-Mg matrix and lamellar 14H LPSO phases. After 510 degrees C heat treatment, lamellae shortened, and their content decreased. Upon 8 h heat treatment, block 18R LPSO phases formed at the grain boundaries while 14H LPSO lamellae disappeared. Presence of block 18R LPSO phases improved mechanical and damping properties of the alloy. The corresponding mechanisms of the influence of LPSO type and morphology on mechanical and damping capacities are discussed. (c) 2020 Published by Elsevier B.V. on behalf of Chongqing University.
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