Hardening effect of electron beam surface remelting on W6 steel

被引：0
|
作者：
Chen G. [1 ]
Ten X. [1 ]
Shu X. [1 ]
Zhang B. [1 ]
机构：
[1] State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin
来源：
| 1600年 / Harbin Research Institute of Welding卷 / 42期
关键词：
Carbide; Electron beam surface remelting; High speed steel; Martensite; Microhardness;
D O I：
10.12073/j.hjxb.20210413002
中图分类号：
学科分类号：
摘要：
High-speed steel is a kind of special tool steel with high hardness and wear resistance. The microhardness loss of high-speed steel that is subjected to spheroidizing annealing is large, which significantly affects its application. In order to increase the microhardness of spheroidal annealing W6Mo5Cr4V2 high-speed steel surface, and to ensure its good internal toughness, the electron beam surface remelting is used to harden the surface. The remelting surface is flat and smooth with small craters. Cellular dendrites are observed in the remelting layer, which is mainly composed of martensite, residual austenite, M2C eutectic carbide, and fine rod-shaped MC carbide, the formation process and types of intercrystalline carbides are analyzed. After electron beam surface remelting, the microhardness of the W6Mo5Cr4V2 high-speed steel surface is increased from 283 HV to more than 800 HV, indicating the prominent recovery effect of microhardness. © 2021, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
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页码：1 / 6
页数：5
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