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材料工程  2014, Vol. 0 Issue (12): 72-78    DOI: 10.11868/j.issn.1001-4381.2014.12.013
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
ZnAl10Cu2合金在热变形过程中的球化及动态再结晶
邬小萍, 李德富, 郭胜利, 许晓庆, 胡捷, 贺金宇
北京有色金属研究总院, 北京 100088
Globularizing and Dynamic Recrystallization of ZnAl10Cu2 Alloy During Hot Deformation
WU Xiao-ping, LI De-fu, GUO Sheng-li, XU Xiao-qing, HU Jie, HE Jin-yu
Beijing General Research Institute for Non-ferrous Metals, Beijing 100088, China
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摘要 采用Gleeble-1500D热模拟实验机研究ZnAl10Cu2合金在变形温度180~330℃、应变速率0.01~30s-1、真应变0.3~1.2时的热变形组织演化行为.结果表明:在不同变形条件下,共晶中的片状α2相发生了不同程度的球化和弯折,其球化程度随着应变速率的降低、变形温度的升高、真应变的增大而增加;同时,基体β相发生了动态再结晶.当变形温度小于270℃时,随着变形温度的升高,再结晶晶粒更为细小均匀.变形温度进一步升高,晶粒出现局部长大;当应变速率小于1s-1时,动态再结晶晶粒随应变速率的增大而减小;应变速率约为1s-1时,晶粒细小均匀;应变速率继续增加时,动态再结晶晶粒出现不均匀现象.
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邬小萍
李德富
郭胜利
许晓庆
胡捷
贺金宇
关键词 ZnAl10Cu2合金热变形球化动态再结晶    
Abstract:The microstructural evolution of ZnAl10Cu2 alloy during hot deformation was investigated using the Gleeble-1500D thermomechanical simulator at the temperature of 180-330℃, strain rate of 0.01-30s-1 and true strain value of 0.3-1.2. The results show that the sheet α2 phase of eutectic structure has different degrees of globularizing and bending under different hot deformation conditions, the globulous degree increases with the decreasing strain rate and the increasing deformation temperature and true strain. Meanwhile, the dynamic recrystallization occurrs in β-matrix, the degree increases with the increasing deformation temperature when temperature is below 270℃; the dynamic recrystallization grain appears locally grown when the temperature higher. The size of dynamic recrystallization grain decreases with the increasing strain rate which is below 1s-1. The size of dynamic recrystallization is small and uniform when strain rate is 1s-1, but when strain rate is above 1s-1,the dynamic recrystallization grain becomes uneven phenomenon.
Key wordsZnAl10Cu2 alloy    hot deformation    globularizing    dynamic recrystallization
收稿日期: 2012-07-26      出版日期: 2014-12-20
1:  TB331  
基金资助:十一五国家科技支撑计划资助项目(2009BAE71B03)
通讯作者: 邬小萍(1985-),女,硕士,从事专业:金属材料制备与加工,联系地址:北京市怀柔区雁栖经济开发区乐园大街六号加工事业部(100014)     E-mail: wuxp040301@sina.com
引用本文:   
邬小萍, 李德富, 郭胜利, 许晓庆, 胡捷, 贺金宇. ZnAl10Cu2合金在热变形过程中的球化及动态再结晶[J]. 材料工程, 2014, 0(12): 72-78.
WU Xiao-ping, LI De-fu, GUO Sheng-li, XU Xiao-qing, HU Jie, HE Jin-yu. Globularizing and Dynamic Recrystallization of ZnAl10Cu2 Alloy During Hot Deformation. Journal of Materials Engineering, 2014, 0(12): 72-78.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2014.12.013      或      http://jme.biam.ac.cn/CN/Y2014/V0/I12/72
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