淬火温度对Fe-Cr-B-C合金涂层组织及硬度的影响  

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

作　　者：吴宪吉 宋元元[1] 杨志荣 闫德胜[1] 姜海昌[1] 胡小锋[1] Wu Xianji;Song Yuanyuan;Yang Zhirong;Yan Desheng;Jiang Haichang;Hu Xiaofeng(CAS Key Laboratory of Nuclear Materials and Safety Assessment,Institute of Metal Research,Chinese Academy of Sciences,Shenyang Liaoning 110016,China)

机构地区：[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

出　　处：《金属热处理》2022年第10期224-227,共4页Heat Treatment of Metals

基　　金：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)。

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。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.

关 键 词：Fe-Cr-B-C合金涂层 淬火 显微组织 硼碳化物 

分 类 号：TG156.3[金属学及工艺—热处理]