Y_(2)O_(3)对316L不锈钢激光熔覆层耐磨性和耐蚀性的影响  

Effects of Y_(2)O_(3) on Wear Resistance and Corrosion Resistance of Laser-cladding Layer on 316L Stainless Steel

作　　者：贾升 张帆 边兰 杨德林 张广顺 王茜 张峻巍[1] JIA Sheng;ZHANG Fan;BIAN Lan;YANG Delin;ZHANG Guangshun;WANG Qian;ZHANG Junwei(School of Materials and Metallurgy,University of Science and Technology,Anshan 114000,China;School of Science,University of Science and Technology Liaoning,Anshan 114000,China)

机构地区：[1]辽宁科技大学材料与冶金学院,辽宁鞍山114000 [2]辽宁科技大学理学院,辽宁鞍山114000

出　　处：《热加工工艺》2023年第8期125-129,共5页Hot Working Technology

基　　金：国家自然科学基金资助项目(51874091,52101087);辽宁省教育厅优秀青年科技人才项目(2020LNQN01);辽宁科技大学青年教师科研基金项目(2019QN02)。

摘　　要：采用半导体激光器在316L不锈钢基体表面熔覆不同质量百分比Y_(2)O_(3)的316L不锈钢粉末。采用金相显微镜、扫描电镜(SEM)、X射线衍射仪(XRD)对熔覆层的组织和物相成分进行分析,同时对熔覆层的耐蚀性和耐磨性能进行试验。结果表明:该熔覆层由γ-(Fe,Ni)固溶体和CrFe_(7)C_(0.45)碳化物等物相组成,熔覆层从上到下依次分布着等轴晶、柱状晶和平面晶。Y元素主要在晶界处偏聚,少量弥散分布在晶内。添加Y2O3能明显提高316L不锈钢熔覆层的耐蚀性和耐磨性,但是添加Y2O3超过一定含量对熔覆层的耐蚀性和耐磨性的强化效果降低。316L stainless steel powders with different contents of Y_(2)O_(3) were cladded on the surface of 316L stainless steel substrate by semiconductor laser.The microstructure and phase composition of the cladding layers were analyzed by OM,SEM and XRD,and the corrosion and wear resistance of the cladding layers were tested.The results show that the cladding layer is composed of γ-(Fe,Ni)solid solution and CrFe_(7)C_(0.45) carbide.The equiaxed crystals,columnar crystals and planar crystals distribute in the cladding layer from the top to the bottom.The Y element is mainly concentrated at grain boundaries,and a small amount of Y element disperses in the grains.The addition of Y_(2)O_(3) can obviously improve the corrosion resistance and wear resistance of 316L stainless steel cladding layers.However,the strengthening effects of Y2O3 content on the corrosion resistance and wear resistance of the cladding layer decreases when the addition amount is larger.

关 键 词：316L不锈钢 Y_(2)O_(3) 激光熔覆 耐蚀性 耐磨性 

分 类 号：TG174[金属学及工艺—金属表面处理]