Strain path dependent evolutions of microstructure and texture in AZ80 magnesium alloy during hot deformation
Strain path dependent evolutions of microstructure and texture in AZ80 magnesium alloy during hot deformation
复制标题
AZ80镁合金热变形过程中显微组织和织构的应变路径相关演化
DOI：
10.1016/j.jallcom.2019.07.262
复制
发表时间：
2019-10
影响因子：
6.2
通讯作者：
Hui Zhang
中科院分区：
文献类型：
--
作者：
Longqing Tang;Fulin Jiang;Jie Teng;Dingfa Fu;Hui Zhang
在本研究中，在温度为350° C、应变速率为0.01 s− 1的条件下，研究了应变路径（即单道次和多道次热压缩）对AZ 80镁合金显微组织和织构演变的影响。结果表明，流变应力与应变路径变化有显著的相关性。在多道次热变形间断保持过程中观察到流动应力硬化现象，导致下道次峰值应力高于上道次卸载应力。应变路径对晶粒尺寸影响不大。应变路径对织构演化有重要贡献，由于动态再结晶和亚动态再结晶，织构组分由单道次变形的（1 <$2 1 <$0）< 0001>和（01 1 <$0）< 0001>逐渐转变为四道次变形的（0001）< 01 1 <$0>和（0001）< 11 2 <$0>。观察到的流动应力硬化现象可以用晶粒粗化和织构演变的综合作用来解释。
In the present study, the effects of strain paths (ie, single-pass and multi-pass hot compression) on microstructural and texture evolutions of AZ80 magnesium alloy were studied at temperature of 350° C and strain rate of 0.01 s− 1. The results showed that flow stresses are remarkably dependence on strain path changes. Flow stress hardening phenomenon during interrupted holding of multi-pass hot deformation was observed, which led to higher peak stress of next pass than previous unloading stress. Strain paths presented slight influence on grain size. Significant contribution of strain paths to texture evolution was found. Due to dynamic recrystallization and meta-dynamic recrystallization, texture components gradually changed from (1¯ 2 1¯ 0)< 0001> and (01 1¯ 0)< 0001> in single-pass deformation to (0001)< 01 1¯ 0> and (0001)< 11 2¯ 0> in four-pass deformation. The observed flow stress hardening phenomena were interpreted by the combined functions of grain coarsening and texture evolution.
登录
查看更多内容
DOI：
10.1016/j.msea.2006.02.041
发表时间：
2006-05-15
影响因子：
6.4
作者：
Beer, A. G.;Barnett, M. R.
通讯作者：
Barnett, M. R.
影响因子：
9.4
作者：
D. Solas;C. Tomé;O. Engler;H. Wenk
通讯作者：
D. Solas;C. Tomé;O. Engler;H. Wenk
影响因子：
6
作者：
A. Beer;M. Barnett
通讯作者：
A. Beer;M. Barnett
影响因子：
4
作者：
Razzaghi, Marjan;Mirzadeh, Hamed;Emamy, Massoud
通讯作者：
Emamy, Massoud
DOI：
10.1016/j.msea.2012.05.039
发表时间：
2012-08-30
影响因子：
6.4
作者：
Jiang, Fulin;Zhang, Hui;Chen, Jianghua
通讯作者：
Chen, Jianghua