Microstructure and mechanical properties of Mg-6Al-1Sn-Mn sheets prepared by on-line heating rolling

被引：0
|
作者：
Liu Q. [1 ,2 ]
Song J. [1 ,2 ]
Zhao H. [1 ,2 ]
Xiao B. [1 ,2 ]
Pan F. [1 ,2 ]
机构：
[1] College of Materials Science and Engineering, Chongqing University, Chongqing
[2] National Engineering Research Center for Magnesium Alloy, Chongqing University, Chongqing
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2020年 / 51卷 / 11期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
AT61M magnesium alloy plate; Mechanical properties; Microstructure; On-line heating rolling;
D O I：
10.11817/j.issn.1672-7207.2020.11.019
中图分类号：
学科分类号：
摘要：
The microstructure and mechanical properties of on-line heating rolled of extruded Mg-6Al-1Sn-Mn alloy(AT61M) sheets were investigated at 150, 200 and 250 ℃. The results show that the on-line heating rolling technology can effectively improve the rolling ability of AT61M sheets. With the increase of the rolling temperature, the non-basal slips such as prismatic and pyramidal slip are activated greatly, leading to the enhanced plasticity. Meanwhile, the recrystallization is promoted due to the operation of non-basal slips, and the average grain size reduces from 8.1 μm to 5.9 μm. The yield strength and ultimate tensile strength of rolled sheets along the rolling direction increase with the increase of the rolling temperature, and the yield strength, ultimate strength and elongation along the transverse direction(TD) are better than those in the rolling direction(RD) at relative high temperature. After rolling at 250℃, the yield strength, ultimate tensile strength and elongation in TD are 222.1 MPa, 342.2 MPa and 8.8%, respectively, displaying the best comprehensive mechanical properties. © 2020, Central South University Press. All right reserved.
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页码：3159 / 3168
页数：9
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