Transactions of Materials and Heat Treatment

Title：Effect of annealing process on microstructure and properties of high temperature roll bonding for AZ31 magnesium alloy sheet

Authors： Liao Benhong Shi Laixin Hu Li Song Denghui Zhou Tao

Unit： Chongqing University of Technology

KeyWords： high temperature roll bonding AZ31 magnesium alloy annealing cumulative strain texture

ClassificationCode：TG376.5

year,vol(issue):pagenumber：2020,45(3):179-184

Abstract：

The microstructure and texture of AZ31 magnesium alloy sheet were controlled by the combination of high temperature roll bonding and annealing recrystallization. The effects of annealing on microstructure, grain orientation and mechanical properties of high temperature roll bonding for AZ31 magnesium alloy sheet were studied by annealing treatment at 300 ℃ for different times. The results show that the interfacial bonding quality increases with the increasing of annealing time.When the annealing time is 30 min, the metallurgical phenomena appears in some areas.The microhardness decreases with the increasing of annealing time.The proportion of non-base oriented grain in high temperature roll bonding sheet increases significantly with the increasing of annealing time.At the same time, the effect of historical cumulative strain and subsequent annealing of the high temperature roll bonding on the base texture of AZ31 magnesium alloy sheet is significantly weakened.

Funds：

国家自然科学基金资助项目（51701034, 51805064）；重庆市基础研究与前沿探索项目(cstc2017jcyjAX0062, cstc2018 jcyjAX0035)；重庆市教委科学技术研究项目(KJ1600922, KJQN201801137)

廖本洪（1994-），女，硕士研究生 E-mail：15736346608@139.com 通讯作者：时来鑫（1986-），男，博士，副教授 E-mail：shilaixin2016@cqut.edu.cn

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