【摘要】 对Ｗ６ＭＯ５ｃｒ４Ｖ２钢１２４０℃奥氏体化后、在１１５０℃以１．５×１０￣－２／ｓ的形变速率筹温形变０％～６５％，并在２７０℃等温淬火，５６０℃３次回火后的组织和性能进行了研究。结果表明：该钢在１０５０℃或更高温度形变会发生动态再结晶，且形变诱发析出了ＭＣ型碳化物，而使贝氏体中具有大量的碳化物颗粒；形变使等温淬火、回火组织的强度、硬度及韧度均有所提高，在１０５０℃形变１５％～２０％具有最佳的强韧性配合。更多还原

【Abstract】 This paper deals with the microstructure and the mechanical properties of W6Mo5Cr4V2 steel. The steel is thermally deformed at 1150～750℃with a deformation rate of 1.5×10￣-2/s in the range of 0%～65%and then austempered at 270℃,tempored at 560℃。The results show that the dynamic recrystallization takes place while it is deformed at 1050℃ or higher temporature,the thermal deformation induces the precipitation of MC type carbide and there are a large amount of carbide particles in bainite;thermal deformation of the steel, the thermal deformation at 1050℃at 15%～20%gives the optimal combination of strength and toughness.更多还原