摘要
为了改善ZK30镁合金的凝固组织,提高其力学性能。采用光学显微镜(OM),维氏硬度和拉伸-压缩试验机等手段,评价不同往复挤压道次对ZK30镁合金表面微观形貌和力学性能的影响。实验结果表明往复挤压道次能够显著影响ZK30镁合金的表面微观形貌和力学性能。当往复挤压道次增加时,合金的晶粒会慢慢细化。当ZK30镁合金往复变形道次大于8次时ZK30镁合金的力学性能变化不大。故为了提高ZK30镁合金的力学性能,采用往复变形道次大于8次的往复挤压工艺。
To improve solidification microstructure and the mechanical properties of ZK30 magnesium alloy,we investigated the effects of cyclic extrusion and compression(CEC) pass on the microstructure and the mechanical properties of ZK30 magnesium alloy by optical microscope(OM),Vickers hardness and tensile-compressive testing machine.The results showed that the CEC pass number could effect on the mechanical properties and solidification structure of ZK30 alloy.It was found that the grain refinement intensified with increasing cyclic extrusion and compression(CEC) pass number obviously.The mechanical properties of ZK30 alloy were improved with increasing CEC pass number,till CEC pass number was at 8-passes.In order to improve the mechanical properties of ZK30 alloy,the CEC pass number should be more than 8-passes.
作者
程正翠
Cheng Zhengcui(Anhui Institute of Industrial Economics and Vocational Technology,Hefei,Anhui 230051,China)
出处
《黑龙江工业学院学报（综合版）》
2019年第6期11-14,共4页
Journal of Heilongjiang University of Technology(Comprehensive Edition)
基金
2018年安徽省自然科学研究项目(编号:2018zk01)
安徽省省级高水平高职专业机电一体化技术专业项目(编号:2018ylzy099)
安徽省省级高水平教学团队机械设计课程群教学团队项目(编号:2018jxtd021)
关键词
ZK30镁合金
往复挤压道次
表面形貌
力学性能
ZK30 magnesium alloy
cyclic extrusion and compression pass
surface microstructure
mechanical properties
