摘要
Ultrafine-grained structure in Mg-Zn-Y-Zr alloy was achieved towards extraordinary superplasticity induced by friction stir processing. Grain refinement and homogeneous dispersion of precipitates were promoted by the coupled thermo-mechanical effect. The ultra-fined grains size of 1.9 ± 0.4 μm and the superplastic elongation of 642% were obtained. Grain boundary sliding was considered as the predominant superplastic deformation mechanism in ultrafine-grained materials.
源语言 | 英语 |
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文章编号 | 130524 |
期刊 | Materials Letters |
卷 | 303 |
DOI | |
出版状态 | 已出版 - 15 11月 2021 |
已对外发布 | 是 |