Friction behavior of Ti-30Fe composites strengthened by TiC particles  

TiC颗粒强化Ti-30Fe复合材料的摩擦行为

作　　者：Sheng-hang XU Jing-wen QIU Hui-bin ZHANG Hua-zhen CAO Guo-qu ZHENG Yong LIU 徐圣航;邱敬文;张惠斌;曹华珍;郑国渠;刘咏(浙江工业大学材料科学与工程学院,杭州310014;中南大学粉末冶金国家重点实验室,长沙410083;湖南科技大学难加工材料高效精密加工湖南省重点实验室,湘潭411201)

机构地区：[1]College of Materials Science and Engineering,Zhejiang University of Technology,Hangzhou 310014,China [2]State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China [3]Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material,Hunan University of Science and Technology,Xiangtan 411201,China

出　　处：《Transactions of Nonferrous Metals Society of China》2021年第4期988-998,共11页中国有色金属学报（英文版）

基　　金：financial support from the National Key Fundamental Research and Development Project of China (2014CB644002)。

摘　　要：Ti-Fe-x TiC(x=0, 3, 6, 9, wt.%) composites were fabricated through low temperature ball milling of Ti, Fe and TiC powders, followed by spark plasma sintering. The results show that β-Ti, β-Ti-Fe, η-Ti4 Fe2 O0.4 and TiC particles can be found in the composites. The microstructure can be obviously refined with increasing the content of TiC particles. The coefficient of friction(COF) decreases and the hardness increases with increasing the content of TiC particles. The adhesive wear is the dominant wear mechanism of all the Ti-Fe-x TiC composites. The Ti-Fe-6 TiC composite shows the best wear resistance, owing to the small size and high content of TiC particle as well as relatively fine microstructure. The wear rate of the Ti-Fe-6 TiC composite is as low as 1.869× 10-5 mm3/(N·m) and the COF is only 0.64. Therefore, TiC particle reinforced Ti-Fe based composites may be utilized as potential wear resistant materials.将Ti、Fe和TiC粉末进行低温球磨,并结合放电等离子烧结制备Ti-Fe-x TiC (x=0,3,6,9,质量分数%)复合材料。结果表明:该复合材料中含有β-Ti、β-Ti-Fe、η-Ti4Fe2O0.4以及TiC颗粒。显微组织随着TiC添加量的增加而显著细化。粘着磨损是Ti-Fe-x TiC复合材料的主要磨损机制。随着TiC添加量的增加,摩擦因数(COF)减小,硬度增大。其中,由于Ti-Fe-6TiC复合材料中TiC含量较高,TiC颗粒尺寸小,组织细化程度高,因此,具有最佳的耐磨性能,磨损率仅有1.869×10-5 mm3/(N·m),同时,摩擦因数为0.64。由此可见,TiC颗粒增强Ti-Fe基复合材料在耐磨材料领域具有潜在的应用价值。

关 键 词：TiC particle Ti-Fe based composite powder metallurgy MICROSTRUCTURE friction behavior 

分 类 号：TB333[一般工业技术—材料科学与工程]