扫描速度对Mo2FeB2金属陶瓷激光熔覆层组织和耐磨性能的影响
Effect of Scanning Speed on Structure and Wear Resistance of Laser Cladding Mo2FeB2 Cermet Layer
摘 要
采用激光熔覆工艺在Q235钢板表面制备Mo2FeB2金属陶瓷熔覆层,研究了激光扫描速度对熔覆层组织、显微硬度和耐磨性能的影响。结果表明:Mo2FeB2金属陶瓷熔覆层由Mo2FeB2、(Mo,Fe,Cr)3B2、CrB、MoB、Fe-Cr等相组成;随着扫描速度的增大,Mo2FeB2硬质相由长条状转变成块状,尺寸减小;扫描速度对硬质相含量的影响不大;随着扫描速度的增大,Mo2FeB2金属陶瓷熔覆层的平均显微硬度和磨损质量损失均先减小后增大;扫描速度为400 mm·min-1时熔覆层的硬度较高,耐磨性能最好。
扫描速度
Mo2FeB2金属陶瓷
组织
硬度
耐磨性能
laser cladding
scanning speed
Mo2FeB2 cermet
structure
hardness
wear resistance
Abstract
Mo2FeB2 cermet cladding layer was prepared on Q235 steel plate surface by laser cladding technique. The effect of laser scanning speed on the structure, microhardness, and wear resistance of the cladding layer was studied. The results show that the Mo2FeB2 cermet cladding layer was composed of Mo2FeB2, (Mo,Fe,Cr)3B2, CrB, MoB, and Fe-Cr phases. With the increase of scanning speed, the morphology of the Mo2FeB2 hard phase changed from long strip to block, and the size decreased. The scanning speed had little effect on the content of the hard phase. With the increase of scanning speed, the average microhardness and the wear mass loss of Mo2FeB2 cermet cladding layer decreased first and then increased. When the scanning speed was 400 mm·min-1, the hardness of the cladding layer was relatively high and the wear resistance was the best.
中图分类号 TG135 TG148 TG456.7 DOI 10.11973/jxgccl202306012
所属栏目 材料性能及应用
基金项目 泰安市科技创新重大专项项目(2021ZDZX020)
收稿日期 2022/4/14
修改稿日期 2023/5/19
网络出版日期
作者单位点击查看
备注孙俊生(1963-),男,山东聊城人,教授,博士
引用该论文: SUN Junsheng,GUAN Changyong,XU Hu,WANG Dezhu. Effect of Scanning Speed on Structure and Wear Resistance of Laser Cladding Mo2FeB2 Cermet Layer[J]. Materials for mechancial engineering, 2023, 47(6): 67～71
孙俊生,关常勇,徐虎,王德柱. 扫描速度对Mo2FeB2金属陶瓷激光熔覆层组织和耐磨性能的影响[J]. 机械工程材料, 2023, 47(6): 67～71
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