Effect of TiC nanoparticle on friction and wear properties of TiC/AA2219 nanocomposites and its strengthening mechanism

作     者：YANG Yi-long ZHANG Yun ZHANG Hao-ming LIU Xu-he LI Xiao-qian 杨益龙;张昀;张昊明;刘旭贺;李晓谦

作者机构：School of Mechanical EngineeringHenan University of EngineeringZhengzhou 451191China College of Mechanical and Electrical EngineeringCentral South UniversityChangsha 410083China State Key Laboratory of High Performance Complex ManufacturingCentral South UniversityChangsha 410083China Light Alloys Research InstituteCentral South UniversityChangsha 410083China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2022年第29卷第3期

页      面：767-779页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Project(2020RC2002) supported by Science and Technology Innovation Program of Hunan Province,China Project(2021JJ40774) supported by Natural Science Foundation of Hunan Province,China Project(20A430007) supported by Key Scientific Research Projects of Colleges and Universities in Henan Province,China Project(212102210032)supported by the Key Scientific and Technological Projects in Henan Province,China Project(HEU10202117)supported by the Key Laboratory of Superlight Materials Surface Technology,Ministry of Education,China 

主　　题：TiC/AA2219 nanocomposite TiC nanoparticle wear properties hardness wear mechanism 

摘      要：TiC nanoparticles reinforced 2219 aluminum matrix composites were successfully prepared by ultrasonic casting, followed by forging and T6 heat treatment. The friction and wear properties of the disc-to-column were studied under four separate normal values of 5, 10, 20 and 30 N. The increasing hardness value of the nanocomposite may be attributed to the large amount of TiC(i.e., 1.3 wt.% and 1.7 wt.%) introduced to the composites. The friction coefficient of the nanocomposite decreased with the increase of TiC nanoparticles(0-1.7 wt.%) under the same load. But the wear resistance of the TiC/AA2219 nanocomposite increased by 30%-90% as compared to the 2219 matrix alloy. And it decreased with the increasing load. The composite with 0.9 wt.% TiC produced the best results in terms of friction and wear because of its relatively higher hardness and perfect ability to retain a transfer layer of a comparatively larger thickness. On the wear surface, some Al2O3particles were found which aided in the development of protective shear regions and improved the wear resistance. The wear mechanism for the TiC/AA2219 nanocomposite was a combination of adhesive and oxidative wear, with the composites containing hard TiC nanoparticles being mainly abrasive.