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Abstract：
This paper studies the best tempering process and provides guidance for the industrial application of modified Al-bearing high boron high-speed steel (AB-HSS) in the future. The microstructure, hardness and wear resistance of modified AB-HSS after quenching at 1150 degrees C and tempering in the different condition were investigated. The results showed that the matrix of modified AB-HSS consisted of tempered martensite after once tempering at 500 degrees C and 530 degrees C for four hours. Small granular secondary M-23(C, B)(6)type borocarbides were precipitated from the matrix. With the increase of tempering temperature, the macro-hardness, micro-hardness and wear resistance of modified AB-HSS all decreased gradually. With the increase of tempering times and tempering holding time, a part of tempered martensite was decomposed into ferrite, and the macro-hardness and micro-hardness all decreased slowly. Appropriate tempering process of modified AB-HSS was once tempering at 500 degrees C-530 degrees C for four hours.
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IRONMAKING & STEELMAKING
ISSN： 0301-9233
Year： 2020
Issue： 6
Volume： 47
Page： 693-703
2 . 1 0 0
JCR@2022
ESI Discipline： MATERIALS SCIENCE;
ESI HC Threshold：169
Cited Count：
WoS CC Cited Count： 0
SCOPUS Cited Count：
ESI Highly Cited Papers on the List： 0 Unfold All
WanFang Cited Count：
Chinese Cited Count：
30 Days PV： 5
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