Heat Treatment of Metals ›› 2022, Vol. 47 ›› Issue (10): 224-227.DOI: 10.13251/j.issn.0254-6051.2022.10.038

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Influence of quenching temperature on microstructure and hardness of Fe-Cr-B-C alloy coating

Wu Xianji, Song Yuanyuan, Yang Zhirong, Yan Desheng, Jiang Haichang, Hu Xiaofeng   

  1. CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016, China Shenyang Liaoning 110016, China
  • Received:2022-05-23 Revised:2022-08-24 Online:2022-10-25 Published:2022-12-15

Abstract: Effect of quenching temperature (850, 950 and 1050 ℃) on microstructure of Fe-Cr-B-C alloy coating prepared by plasma overlaying was studied by means of OM, SEM and XRD, and the hardness was tested by using microhardness tester. The results indicate that the as-plasma overlaid Fe-Cr-B-C alloy coating comprises dendritic matrix and interdendritic boron carbide distributed in the form of continuous network. After quenching at 1050 ℃, the boron carbide in the Fe-Cr-B-C alloy coating dissolves and spheroidizes, the hardness is up to 64.3 HRC, and the comprehensive properties is the best.

Key words: Fe-Cr-B-C alloy coating, quenching, microstructure, boron carbide

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