Microstructure Evolution and Mechanical Properties of AZ61 under 160° Equal Channel High Angular Pressing
Author of the article:YANG Jie;FAN Jianfeng;SHAN Zhaohui;YANG Muxuan
Author's Workplace：Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China;Shanxi Key Laboratory of Advanced Magnesium Based Materials, Taiyuan University of Technology, Taiyuan 030024, China;School of Materials Science and Engineering, Taiyuan University of Technology,Taiyuan 030024, China
Key Words：160° equal channel high angular pressing AZ61 fine grain low temperature cumulative deformation mechanical properties
Abstract：
The evolution of deformation microstructure was analyzed by equal channel 160° angle extrusion(ECAP) at100 ℃ and 150 ℃ for commercial AZ61 extrusion plate. Based on the energy storage theory analyzed the at 100 ℃ and150 ℃ when the ECAP effects on mechanical properties of AZ61 alloy. The results show that at 100 ℃, ECAP three times accumulated deformation is 0.6, twin dynamic recrystallization(TDRX) is given priority;At 150 ℃ accumulated deformation of 0.6, the continuous dynamic recrystallization(CDRX) is the main priority. 150 ℃ of ECAP extrusion 8 times, then through 100 ℃ of ECAP extrusion three times, the 1 μm fine grain structure is obtained, improve the comprehensive mechanics performance of the AZ61 alloy, the yield strength and tensile strength are 350 MPa and 432 MPa,respectively.
