以Fe-Mn-Si系高锰奥氏体钢为研究对象,运用金相显微镜对形变组织进行分析,采用X射线衍射仪对不同应变速率下拉伸试样的变形区进行分析。结果表明:应力速率越大,材料的抗拉强度越大,随形变量的增大,α’马氏体的含量增大,并且α’马氏体是由γ相直接转变而来,随应力速率增大,α’马氏体的产生速度加快。 Taking Fe-Mn-Si high-manganese austenitic steel as the research object, the deformation microstructure was analyzed by metallographic microscope, and the deformation zone of tensile specimens at different strain rates was analyzed by X-ray diffraction. The results show that the larger the stress rate is, the larger the tensile strength of the material is. With the increase of deformation, the content of α ’martensite increases and α’ martensite changes directly from γ phase. As the rate increases, the rate of α ’martensite increases.