利用等通道转角挤压法(ECAP)制备出了细晶ZK60合金,通过金相组织观察,拉伸性能测试,EBSD和透射电镜(TEM)研究了不同挤压温度和挤压道次对合金组织与性能的影响.结果表明:ZK60镁合金在210～240℃温度范围内进行ECAP挤压能获得较好的晶粒细化效果;在240℃进行ECAP挤压时,随着挤压道次的增加,合金晶粒得到明显的细化,经过4道次挤压后,合金晶粒可细化到2.8μm;但是超过4道次后,合金的细化效果减慢;合金ECAP后的屈服强度与变形前相比降低,合金的伸长率经过多道次变形后得到明显提高.
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