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对Ｗ６Ｍｏ５Ｃｒ４Ｖ２钢奥氏体化后，在１１５０℃～７５０℃以１．５×１０－２／ｓ的形变速率等温形变０％～６５％，并对２７０℃等温淬火、５６０℃回火后组织与性能进行了研究。结果表明：形变使等温淬火、回火组织的硬度、强度和冲击韧度均有所提高，１０５０℃形变１５％～２０％具有最佳强韧性配合。并根据力学性能与组织变化的关系，提出了组织细化强韧化、位错强化、碳化物沉淀强化和锯齿状晶界韧化的强韧化机理，其中锯齿状晶界韧化对最佳强韧性配合起着关键作用。
After austenitizing W6Mo5Cr4V2 steel, it was isothermally deformed at a deformation rate of 1.5 × 10-2 / s from 0% to 65% at 1150 ℃ to 750 ℃ and isothermally tempered at 270 ℃. After tempering at 560 ℃, Performance has been studied. The results show that the hardness, strength and impact toughness of isothermal quenched and tempered microstructure are all increased after deformation, and the best strength and toughness are obtained when the deformation of 1050 ℃ is between 15% and 20%. Based on the relationship between the mechanical properties and the microstructural changes, the strengthening and toughening mechanisms of the structure refinement, toughening, dislocation strengthening, carbide precipitation strengthening and zigzag grain boundary toughening were put forward, in which the zigzag grain boundary toughening was the best Toughness plays a key role.