金属热处理 ›› 2022, Vol. 47 ›› Issue (10): 224-227.DOI: 10.13251/j.issn.0254-6051.2022.10.038

• 表面工程 • 上一篇    下一篇

淬火温度对Fe-Cr-B-C合金涂层组织及硬度的影响

吴宪吉, 宋元元, 杨志荣, 闫德胜, 姜海昌, 胡小锋   

  1. 中国科学院 金属研究所 核用材料与安全评价重点实验室, 辽宁 沈阳 110016
  • 收稿日期:2022-05-23 修回日期:2022-08-24 出版日期:2022-10-25 发布日期:2022-12-15
  • 作者简介:吴宪吉(1988—),男,工程师,硕士,主要研究方向为材料制备与加工,E-mail:xjwu@imr.ac.cn
  • 基金资助:
    中国科学院战略性先导科技专项(A类)(XDA28040200);沈阳市科学技术计划(21-109-3-10)

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

摘要: 利用等离子堆焊工艺制备了Fe-Cr-B-C合金涂层,并对其进行了不同温度(850、950和1050 ℃)的淬火处理。利用OM、SEM、XRD研究了合金涂层不同温度淬火后的显微组织,利用显微硬度计对合金涂层的硬度进行了测试。结果表明:堆焊态Fe-Cr-B-C合金涂层的显微组织由树枝晶基体和网状硼碳化物组成;经1050 ℃淬火处理的Fe-Cr-B-C合金涂层网状硼碳化物回溶、球化,硬度达64.3 HRC,综合性能最优。

关键词: Fe-Cr-B-C合金涂层, 淬火, 显微组织, 硼碳化物

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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