对3种成分Fe-Mn-Si-Al钢的力学性能、显微结构和重位晶界进行了研究,结果表明:随着钢中Mn、Si和Al元素含量的降低,材料的屈服强度和抗拉强度逐渐升高,伸长率逐渐降低,低∑值重位品界出现频率依次为83.4%、36%和21%,并且钢中形变孪品的数量逐渐减少.Fe-30Mn-3Si-3Al钢中形变孪晶分为一次孪晶和二次孪晶,一次孪晶和二次孪晶生长方向成60°夹角,大部分二次孪晶分布在一次孪晶的两孪晶界之间,但在高应力的形变带内二次孪晶可穿过一次孪晶的孪晶界.
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