Microstructure and Mechanical Properties of Magnesium Alloy AZ80 Wheel Fabricated by Power Spinning

被引：0

作者：

Cao Z. ^{[1
,2
]}

Wang X. ^{[1
,2
]}

Dong J. ^{[3
]}

Wang F. ^{[3
]}

Wang S. ^{[1
,2
]}

机构：

[1] Beijing Institute of Aeronautical Materials, Beijing

[2] Beijing Engineering Research Center of Advanced Aluminum Alloys and Application, Beijing

[3] National Engineering Research Center of Light Alloy Net Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai

来源：

Xiyou Jinshu/Chinese Journal of Rare Metals | 2018年 / 42卷 / 02期

关键词：

Magnesium alloy; Mechanical properties; Microstructure; Power spinning;

D O I：

10.13373/j.cnki.cjrm.XY16090031

中图分类号：

学科分类号：

摘要：

The power spinning of AZ80 alloy wheels was conducted innovatively. The effects of processing parameters including spinning temperature, feed ratio and thickness reduction on the deformation ability, microstructures and mechanical properties were investigated. The results showed that a good spinning ability and microstructure could be obtained when the spinning was carried out at a temperature of 420 ℃ and a feed ratio of 0.1 mm•r-1. With the deforming temperature increasing from 300 to 420 ℃, the grain size increased and a more uniform microstructure was obtained induced by a larger extent of dynamic recrystallization. The variation of feed ratio had a slight influence on the microstructure. A larger feed ratio led to a finer microstructure. The grain size decreased and the microhardness increased significantly with increasing thickness reduction. Moreover, the electron backscatter diffraction (EBSD) results showed that the c-axes of most grains were approximately parallel to the radial direction, and some of them had a slight deflection towards the axial direction. Furthermore, a yield strength (YS) of 169 MPa, an ultimate tensile strength (UTS) of 312 MPa and an elongation of 14.1% were obtained when a thickness reduction of 50% was adopted. Compared to the as-cast blank, the YS, UTS and elongation increased by 181%, 160% and 182%, respectively. ©2018, Editorial Office of Chinese Journal of Rare Metals. All right reserved.

引用

页码：139 / 145

页数：6

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