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Effect of Quenching Temperature on Transform Mechanism of Carbides of M42
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Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,HEYE Special Steel Co,Ltd,HEYE Special Steel Co,Ltd,Institute for Advanced Materials and Technology,University of Science and Technology Beijing

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    Abstract:

    With the raw material of the precision forging M42 spray formed high speed steel, the orthogonal experiment under different parameters was used to optimize the technology of heat treatment and analyze the material’s microstructure, hardness, and flexural strength and the evolution law of carbide in different heat treatment systems. Results show that the best preservation temperature for quenching was 1180℃, and the temperature for temper which should be repeated 3 times and 1h for each time was 540℃. In this system, Rockwell hardness of M42 can reach to 67.2HRC, while flexural strength can be 315MPa.During the process of heat treatment, M6C carbide was largely affected by the change of quenching preservation temperature. When the quenching temperature was 1190℃, M6C carbide fully melted, and dispersedly separated after tempering.

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[Liu Bowen, Lu Xin, Pi Ziqiang, Jia Chengchang, Zheng Wei, Wu Lizhi, Zhang Yifan. Effect of Quenching Temperature on Transform Mechanism of Carbides of M42[J]. Rare Metal Materials and Engineering,2017,46(3):829~834.]
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History
  • Received:December 15,2015
  • Revised:January 12,2016
  • Adopted:February 24,2016
  • Online: May 18,2017
  • Published: