Effect of Quenching Temperature on Transformation Mechanism of Carbides of M42

Bowen Liu, Xin Lu, Ziqiang Pi, Chengchang Jia, Wei Zheng, Lizhi Wu, Yifan Zhang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

With the precision forged M42 spray formed high speed steel as the raw material, the orthogonal experiment under different parameters was used to optimize the technique of heat treatment and the microstructure, hardness, flexural strength and the evolution law of carbides were analyzed in different heat treatment systems. Results show that the best preservation temperature for quenching is 1180℃, and the temperature for temper is 540℃ which should be repeated 3 times and 1 h for each time. In this system, Rockwell hardness of M42 can reach to 67.2 HRC, while flexural strength can be up to 3115 MPa. During the process of heat treatment, M6C carbide is largely affected by the change of quenching preservation temperature. When the quenching temperature is 1190℃, M6C carbide fully melts, and precipitates dispersedly after tempering.

Original languageEnglish
Pages (from-to)829-834
Number of pages6
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume46
Issue number3
Publication statusPublished - 2017 Mar 1
Externally publishedYes

Keywords

  • Carbide transformation
  • Heat treatment
  • M42
  • Spray forming

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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