【摘要】 应用电子显微术和定量金相方法观察分析了 GCr15轴承钢超塑变形过程中的组织形貌,测定了晶粒尺寸和碳化物数量、大小和分布等参数,并对它们的变化规律及晶粒尺寸与碳化物颗粒之间的关系进行了讨论.更多还原

【Abstract】 The microstructure of a bearing steel GCr15 during superplastic deformation was analysed by elec-tron microscopy and quantitative metallographic method.The variation in matrix grain size was measured;thechanges of distribution、volume fraction and particle size of carbide were determined;and the relation betweenmatrix grsin size and carbide particles was discussed.更多还原