Hot deformation and dynamic recrystallization behaviors of Mg-Gd-Zn alloy with LPSO phases
发布时间：2021-10-21
点击次数：
DOI码：10.1016/j.jallcom.2019.04.036
发表刊物：Journal of Alloys and Compounds
关键字：Magnesium alloys; Hot deformation; Dynamic recrystallization; LPSO phase
摘要：The hot deformation and dynamic recrystallization (DRX) behaviors of the homogenized Mg-5.6Gd-0.8Zn (wt.%) alloy with high density lamellar long period stacking ordered (LPSO) phases were investigated. The hot compression tests were conducted at temperatures (T) ranging from 350 °C to 500 °C and strain rates (ε˙) ranging from 0.001 s to 1 to 1 s-1, by which the hot deformation behavior was characterized by true stress-strain curve and the constitutive equation was calculated. Except for the deformation conditions of T = 350 °C and ε˙ = 0.1–1 s-1, the true stress-strain curves show DRX characteristics. The LPSO phases had inserted great influences on the deformation and DRX mechanisms of the alloy: (i) when deformed at T = 350–450 °C, the LPSO phases had good thermal stability while both twinning and kinking played an important role under various strain rates. The degree of DRX was low and DRXed grains were small. (ii) When deformed at T = 500 °C, the LPSO phases were almost melted into the matrix and slip played a dominant role while the degree of DRX was high and its grains were significantly grown.
合写作者：Z.Y. Chen*, T. Chen, J.B. Shao, R.K. Wang, C.M. Liu
第一作者：K. Li
学科门类：工学
一级学科：材料科学与工程
文献类型：J
卷号：792
页面范围：894-906
ISSN号：0925-8388
是否译文：否
发表时间：2019-04-14
收录刊物：SCI