航空材料学报2018，Vol.38Issue(3)：65-71,7.DOI:10.11868/j.issn.1005-5053.2017.000081
TiC含量对激光熔覆制备TiC/Ti基复合涂层组织与性能的影响
Effect of TiC Content on Microstructures and Properties of Laser Cladding TiC/Ti Based Composite Coatings
摘要
Abstract
To improve the corrosion resistance and load-bearing performance of titanium alloy, the TiC/Ti based composite coating with good metallurgical quality was prepared on the surface of TC4 titanium alloy by using Diode laser, and the effect of TiC content on the microstructures and properties of TiC/TC4 cladding was studied. The microstructure and phase constitution of the coating were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD), the micro-hardness, corrosion resistance and the load-bearing performance of the coatings were evaluated. The results show that the cladding consists of TiC, TiC0.95, NiTi2 and α'-Ti, and the overall hardness of the coating fluctuates greatly. The micro-hardness in hard phases and in the heat affected zone are 1000-1500HV and about 437HV respectively. While the mass fraction of Ni coated TiC is not higher than 60%, higher corrosion resistance of claddings can be obtained with the increase of the mass fraction of Ni coated TiC, reaching a maximum at 60%; while the mass fraction of Ni coated TiC is not higher than 50%, the load-bearing capacity of claddings can be improved with the increase of the mass fraction of TiC, reaching a maximum at 50%.关键词
激光熔覆/TiC熔覆层/显微组织/腐蚀性能/承载性能Key words
laser cladding/TiC coating/microstructure/corrosion resistance/load-bearing capacity分类
矿业与冶金引用本文复制引用
杨胶溪,余兴,王艳芳,贾无名,陈虹,王喜兵..TiC含量对激光熔覆制备TiC/Ti基复合涂层组织与性能的影响[J].航空材料学报,2018,38(3):65-71,7.基金项目
研究生创新平台建设(101000543214524) （101000543214524）
