摘要
用Gleeble-1500D热模拟压缩试验对7050铝合金高温流变和动态再结晶行为进行研究。结果表明:综合考虑温度和应变速率对动态再结晶的影响,得到动态再结晶峰值应变方程εp=0.015427×ε0.06081·exp(15319/RT),峰值应变与临界应变的关系εc=0.72εp,从而为有限元数值模拟和热加工工艺提供理论和数据参考。
The hot deformation behavior and dynamic recrystallization of 7050 aluminum alloy were investigated on Glee- ble-1500D thermal/mechanical simulator. The results show that the peak strain equation of dynamic recrystallization is εp=0.015 427×ε 0.060 81 exp（15 319/RT）. exp（15 319/RT）with the consideration of temperature and stress rate, and the relation between peak strain and critical strain is εc=0.72εp , which provides the theoretical and data reference for finite element analysis and thermal processing.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2014年第3期52-54,共3页
Ordnance Material Science and Engineering
基金
国家自然科学基金面上项目(51275543)
国家科技部重大专项项目(2012ZX04010-081)
重庆大学大型仪器设备开放基金(2012121516)
关键词
铝合金
热压缩
动态再结晶
临界应变
aluminum alloy
hot compression
dynamic recrystallization
critical strain
