Hot compression behavior of the Mg-Gd-Y-Zn-Zr alloy filled with intragranular long-period stacking ordered phases
发布时间：2021-07-12
点击次数：
影响因子：5.316
发表刊物：Journal Of Alloys And Compounds
关键字：Magnesium alloy; Long-period stacking ordered; Compression ;Microstructure ; Mechanical property
摘要：The compression behavior and mechanical properties of the Mg-6.9Gd-3.2Y-1.5Zn-0.5Zr (wt.%) alloy filled with intragranular long-period stacking ordered (LPSO) phases were investigated. This alloy possesses a high activation energy of similar to 359 kJ/mol, because intragranular LPSO phases inhibit the lattice rotation of a-Mg matrix and may provide back stress. Compression temperature and strain rate (i.e. Zener-Hollomon parameters) combine to influence the DRX (ratio and grain size), workability, and mechanical properties, while the effect of strain rate on the DRX-ed grain size may be reduced at the compression temperature of 450 degrees C. The alloy compressed at 420 degrees C and 0.002 s(-1) exhibits the superior strength because of the finer DRX-ed grain size, larger number of dynamic precipitates and kink bands. However, dynamic precipitates deteriorate the ductility and workability.
合写作者：Chuming Liu, Shunong Jiang, Wenhui Liu, Liwei Lu
第一作者：Xiaojie Zhou
论文类型：期刊论文
通讯作者：Yonghao Gao
论文编号：WOS:000407848400065
学科门类：工学
一级学科：材料科学与工程
文献类型：J
卷号：724
页面范围：528-536
ISSN号：0925-8388
是否译文：否
发表时间：2017-11-15
收录刊物：EI、SCI