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用金相、X光衍射和电子显微镜等方法,对110Mn13钢(高锰钢)和40Cr10Mn10钢在摩擦下表层组织的变化作了研究。探讨了这两种材料在摩擦接触过程中强化的动力学。证明了110Mn13钢具有很高的强化能力是由于在钢中形成了大量的晶体缺陷(位错、堆积层错、形变孪晶)急剧地细化了组织所致。而40Cr10Mn10钢之所以能急剧地强化则是由于在钢中形成了大量的(达到80%)形变马氏体(α及ε)。10Mn13和40Cr10Mn10钢不同的形变强化机理决定了这两种材料在摩擦过程中不同的强化程度。
The microstructure of 110Mn13 steel (high manganese steel) and 40Cr10Mn10 steel were studied by means of metallography, X-ray diffraction and electron microscope. The kinetics of the strengthening of these two materials during frictional contact was discussed. The high strengthening ability of 110Mn13 steel is demonstrated due to the sharp refinement of the microstructure due to the large number of crystal defects (dislocations, stacking faults and deformation twins) formed in the steel. However, 40Cr10Mn10 steels can be rapidly strengthened due to the formation of large amounts (up to 80%) of deformed martensites (α and ε) in the steel. The different deformation strengthening mechanisms of 10Mn13 and 40Cr10Mn10 steels determine the degree of reinforcement of these two materials during friction.