Improved workability and ductility of the Mg-Gd-Y-Zn-Zr alloy via enhanced kinking and dynamic recrystallization
发布时间：2021-10-21
点击次数：
DOI码：10.1016/j.jallcom.2018.03.359
发表刊物：Journal of Alloys and Compounds
关键字：Magnesium alloy; Long-period stacking ordered; Kink; Recrystallization; Workability; Ductility
摘要：In order to improve the workability and ductility of the Mg-Gd-Y-Zn-Zr alloy filled with intragranular long-period stacking ordered (LPSO) phases, the processing route of extrusion prior to compression was designed in this work. As extrusion induces the regular arrangement of the basal plane of LPSO phases and deformed α-Mg grains along the extrusion direction (ED), subsequent compression parallel to ED brings about numerous kink bands which can promote the dynamic recrystallization (DRX) via the continuous DRX mechanism. The enhanced DRX ratio and the restrained dynamic precipitation lead to the improved workability and ductility. No macrocracks can be detected in all the samples compressed at 420–480 °C and their elongation is all increased by ∼20%. The sample compressed at 420 °C exhibits the superior comprehensive mechanical properties, with the tensile yield strength, ultimate tensile strength, and elongation being 305 MPa, 339 MPa, and 9.5%, respectively.
合写作者：C.M. Liu*, Y.H. Gao, S.N. Jiang, Z.Y. Chen
第一作者：X.J. Zhou
文献类型：J
卷号：749
页面范围：878-886
ISSN号：0925-8388
是否译文：否
发表时间：2018-03-28