摘要
在100℃及150℃对商用AZ61挤压板材采用160°大角度等通道转角挤压,分析了等通道转角挤压(ECAP)变形组织演化规律。基于储能理论分析了100℃和150℃时ECAP对AZ61合金力学性能的影响。结果表明,在100℃时,ECAP三道次累积变形量为0.6,以孪晶动态再结晶(TDRX)为主;在150℃累积变形量为0.6时,以连续动态再结晶(CDRX)为主。150℃的ECAP挤压8道次,再经100℃的ECAP挤压三道次,获得了1μm的细晶组织,提高了AZ61合金的综合力学性能,其屈服强度达到350 MPa,抗拉强度达到了432 MPa。
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.
作者
杨杰
樊建锋
单召辉
杨牧轩
YANG Jie;FAN Jianfeng;SHAN Zhaohui;YANG Muxuan(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)
出处
《铸造技术》
CAS
2019年第7期729-733,共5页
Foundry Technology
基金
国家自然科学基金(U1810122、51504162、U1710118、51601123)
山西省高等学校创新人才支持计划(2018)
山西省自然科学基金(201801D221139)
山西省科技基础条件平台建设项目(201605D121030)
山西省人才专项(优秀人才科技创新)(201605D211015)资助项目
