材料工程Issue(1)：16-20,5.DOI:10.3969/j.issn.1001-4381.2013.01.004
新型高强Al-Zn-Mg-Cu合金的热变形行为和热加工图
Hot Deformation Behavior and Processing Map for New Al-Zn-Mg-Cu Alloy
摘要
Abstract
The hot deformation behavior of a new Al-Zn-Mg-Cu high strength alloy was investigated by hot compression tests conducted on thermo-mechanical simulation experimental method at 300-450℃ , strain rate 10-3-10s-1and 50% height reduction. The processing maps of the alloy were established. Both of temperature and strain rate have a dramatic effect on flow stresses. The flow stress curves of the alloy present the features of steady-state dynamic recovery curve at the test conditions. The results of processing maps and microstructures show that the parameter range of 350-450℃ and 10~3-10~2s~1 is suitable to smaller strain(ε= 0.1 )casting structure features; and the parameter range of 300-450℃ and 10~3-10~1 s~1 is suitable to larger strain(ε= 0. 5)forging structure features.关键词
Al-Zn-Mg-Cu合金/流变应力/动态回复/热加工图Key words
Al-Zn-Mg-Cu alloy/ flow stress/ dynamic recovery processing map分类
矿业与冶金引用本文复制引用
陶乐晓,臧金鑫,张坤,陈慧琴..新型高强Al-Zn-Mg-Cu合金的热变形行为和热加工图[J].材料工程,2013,(1):16-20,5.基金项目
国家自然科学基金资助项目(51175361) （51175361）
山西省留学人员科研资助项目(2011-074) （2011-074）
