燕山大学学报2024，Vol.48Issue(6)：484-492,518,10.DOI:10.3969/j.issn.1007-791X.2024.06.002
激光合金化强化2Cr13叶片表面组织及性能研究
Microstructure and properties of 2Cr13 blade surface enhanced by laser alloying
摘要
Abstract
2Cr13 stainless steel is often used as the raw material of turbine blade,fan blade,turbine blade and other components.Because it is used in the harsh working environment,it is often eroded by hard phase particles such as sand and furnace dust particles,and the surface is prone to fatigue failure.To address this problem,Fe-Cr-Ni iron-based powder was used to prepare an iron-based coating on the surface of 2Cr13 stainless steel by laser alloying technology,and WC ceramic hard phase was added to the Fe-Cr-Ni powder for improving the erosion resistance of the specimens.The microstructure and surface properties of the alloyed specimens are analyzed by XRD phase detection,EDS analysis,microhardness contrast,friction and wear,and erosion resistance.The results show that the main phase of Fe-Cr-Ni coating is composed of Fe-Ni solid solution,Fe-Cr solid solution and Ni-Cr-Fe element alloy.The maximum microhardness of Fe-Cr-Ni coating can reach 530HV0.5,the friction coefficient is about 0.15,and the relative wear resistance is 0.44.After the addition of WC hard phase,the crystal in the coating is obviously refined,a new carbide Cr23 C6 is formed in the coating,and the presence of WC hard phase is detected.The maximum hardness value increases to 590HV0.5,the friction coefficient decreases to 0.13,and the relative wear resistance increases to 0.62.The erosion resistance of Fe-Cr-Ni sample is enhanced compared with that of the substrate,and the erosion resistance of the sample is further improved after the addition of WC hard phase,and the weight loss shows an approximate linear trend.关键词
2Cr13不锈钢/激光合金化/铁基涂层/WC陶瓷硬质相Key words
2Cr13 stainless steel/laser alloying/iron base coating/WC ceramics hard phase分类
矿业与冶金引用本文复制引用
刘占琪,付宇明,谢印凯,郑丽娟..激光合金化强化2Cr13叶片表面组织及性能研究[J].燕山大学学报,2024,48(6):484-492,518,10.基金项目
河北省自然科学基金资助项目(E2021203218) （E2021203218）
