Transactions of Materials and Heat Treatment

Title：Influence of Zn content on flow stress behavior in the hot deformation for AlZnMgCu alloys

Authors： Zuo Long Tang Jie Zhang Hui

Unit： (College of Materials Science and Engineering Hunan University Changsha 410082 China)

KeyWords： AlZnMgCu alloys hot deformation flow stress activation energy of hot deformation Zn content

ClassificationCode：TG146.21

year,vol(issue):pagenumber：2018,43(5):0-0

Abstract：

The isothermal single pass hot compression experiments of three kinds of AlZnMgCu alloys with different percentages of Zn content were conducted by Gleeble3500 thermal simulation test machine, and the flow stress of hot compression deformation and constitutive equation were analyzed with deformation temperature of 300-450 ℃ and strain rate of 0.0110 s-1. The results show that AlZnMgCu alloys with different percentages of Zn content appear the same change rule, and the flow stress increases rapidly with the increasing of deformation degree. And then, it gradually becomes stable after reaching the peak stress. However, the flow stress behavior of AlZnMgCu alloys with different percentages of Zn content can be described by ZenerHollmon function. When the Zn/Mg ratio is greater than three，the activation energy hot deformation increases first and then remains the same with the increasing of Zn.

Funds：

国家自然科学基金资助项目（51674111）

作者简介：左龙（1993-），男，硕士研究生 Email：1835470737@qq.com 通讯作者：张辉（1963-），男，博士，教授 Email: zhanghui63hunu@163.com

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