钛合金体育器械的表面改性与磨损行为研究  

Study on Surface Modification and Wear Resistance of Titanium Alloy

作　　者：常亚辉[1] 刘涛[2] 

机构地区：[1]河南师范大学,河南焦作454350 [2]郑州大学材料科学与工程学院,河南郑州450001

出　　处：《铸造技术》2016年第4期689-691,共3页Foundry Technology

摘　　要：对钛合金体育器械进行了激光表面改性处理,观察了不同激光扫描速度下的激光表面改性层形貌,并对截面形貌进行了观察,对比分析了激光表面改性前后体育器械的耐磨性能。结果表明,激光表面改性层中的颗粒状析出物为Ti C,等轴状析出物为Ti_5Si_3C并残留有部分C,共晶组织为β-Ti和Ti_3SiC_2组成,枝晶和块状组织主要含有C和Ti。激光表面合金化处理后,钛合金的磨损体积急剧降低,表面耐磨性能明显提高,磨损机制从粘着磨损转化为磨粒磨损。The surface modification of titanium alloy was obtained by laser surface modification, and the morphology of the surface layer was observed by SEM. The results show that the particles precipitate on the surface layer of the laser surface is TiC, and the equiaxial precipitate is TisSi3C. The eutectic structure of the alloy are/3-Ti and Ti3SiC2. After laser surface alloying processing, the wear resistance of the surface layer of titanium alloy increases, and the wear mechanism changes from adhesive wear to abrasive wear.

关 键 词：钛合金 表面改性 微观形貌 耐磨性 

分 类 号：TG174.4[金属学及工艺—金属表面处理]