多向锻造对AZ40镁合金组织和力学性能的影响
Transactions of Materials and Heat Treatment(2020)
Abstract
采用多向锻造(MDF)对Mg-4Al-1Zn-0.5Mn合金进行塑性变形,利用光学显微镜和电子背散射衍射(EBSD)等分析了合金的组织与织构.结果 表明:随着锻造道次的增加,合金中的小角度晶界比例减少,大角度晶界有所增加,晶粒细化,织构有所改变,织构强度降低,各向异性减弱,径向力学性能提高.经过6道次锻造后合金的径向晶粒最细,径向塑性最高.
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