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首页> 外文期刊>ISIJ international >Fabrication of Ultrafine Grained High Speed Steel with Satisfactory Carbide Dissolution by Electropulsing Treatment
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Fabrication of Ultrafine Grained High Speed Steel with Satisfactory Carbide Dissolution by Electropulsing Treatment

机译：电脉冲法制备令人满意的碳化物溶解的超细晶粒高速钢

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摘要

Microstructure of M2 high speed steel (HSS) after electropulsing treatment (EPT) was studied. The secondary carbides precipitated during pre-tempering were dissolved completely during EPT. But the secondary carbides in the starting microstructure cannot be dissolved completely upon conventional reheating to the temperature same as that during EPT. The austenite grain size was ultra-refined by EPT. This study provides a new way to refine austenite grain size in HSS without diminishing the dissolution amount of carbides.
机译：研究了电脉冲处理（EPT）后的M2高速钢（HSS）的组织。在预回火期间沉淀的二次碳化物在EPT期间完全溶解。但是，在常规再加热至与EPT相同的温度时，起始显微组织中的次生碳化物无法完全溶解。通过EPT超细化了奥氏体晶粒尺寸。这项研究提供了一种在不降低碳化物溶解量的情况下细化高速钢中奥氏体晶粒尺寸的新方法。

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