Transactions of Materials and Heat Treatment

Title：Study on flow stress of AZ80 magnesium alloy during hot compression deformation at elevated temperatures

Authors： LIANG Hai-cheng1 2 CUI Jian-zhong1(1.Key Lab of Electromagnetic Processing of Materials Ministry of Education Northeastern University Shenyang 110004 China 2.School of Materials Science and Engineering Shenyang Ligong University Shenyang 110168 China)

Unit：

KeyWords： AZ80 Magnesium alloy hot compression deformation flow stress deformation activation energy

ClassificationCode：TG146.22

year,vol(issue):pagenumber：2009,34(2):113-116

Abstract：

Hot compression tests of AZ80 magnesium alloy were performed on Gleeble2000 ranging from 0.001 to 1s-1 and deformation temperature ranging from 240 to 440℃.The results show that the flow stress behaviors strongly depend on the deformation temperature and strain rate,which can be demonstrated by a Zener-hollomon parameter in the hyperbolic-sine-type equation during hot compression deformation.In the present study,the hot deformation activation energy is 183kJ·mol-1 and the stress exponent is 5 during the hot compression deformation of AZ80 magnesium alloy.And the flow stress mathematics model has been established,its result might provide a more scientific basis for plastic forming of wrought magnesium alloy.

Funds：

高等学校科技创新工程重大项目培育资金项目(704015);; 高等学校科技创新引智计划(B07015)

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