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高速钢当其用来制造各种切削刀具时,最终的热处理工艺一直是淬火后加三(或四)次高温(540～560℃)回火。这种回火的理论基础是多次高温回火产生合金碳化物(M_2C及V_4C_3)的弥散硬化以及残余奥氏体转变成回火马氏体引起的硬化。因此高速钢具有高的硬度和适当的韧性。但是有关高速钢的回火理论研究,大多数是由简单的三元合金的结果推测出来的。直接用成分复杂的高速钢从微观组织变化上做详尽的研
High-speed steel When used to make a variety of cutting tools, the final heat treatment process has been quenched plus three (or four) times the high temperature (540 ~ 560 ℃) tempering. The theoretical basis for this tempering is the multiple hardening caused by the high temperature tempering of the alloy carbides (M_2C and V_4C_3) and the transformation of residual austenite into tempered martensite. Therefore, high-speed steel with high hardness and appropriate toughness. However, the tempering theory of high-speed steel, most of which is speculated by the results of a simple ternary alloy. Directly with the composition of complex high-speed steel microstructure changes from a detailed study