Dry Sliding Tribological Properties of a Dendrite-reinforced Zr-based Bulk Metallic Glass Matrix Composite

作     者：Huijun Yang Yong Liu Teng Zhang Hengpeng Wang Bin Tang Junwei Qiao 

作者机构：Research Institute of Surface Engineering Taiyuan University of Technology Laboratory of Applied Physics and Mechanics of Advanced Materials College of Materials Science and Engineering Taiyuan University of Technology 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2014年第30卷第6期

页      面：576-583页

核心收录：

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

基　　金：the financial support of the National Natural Science Foundation of China (No. 51341006) State Key Lab of Advanced Metals and Materials (No. 2013Z03) Key Laboratory of Cryogenics, TIPC, CAS (No. CRYO201306) financial support of the National Natural Science Foundation of China (Nos. 51101110 and 51371122) Research Project Supported by Shanxi Scholarship Council of China (No. 2012-032) the Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi (2013) 

主　　题：Sliding wear Sliding friction Surface topography Surface analysis Wear testing 

摘      要：In-situ dendrite-reinforced metallic glass matrix （MGM） composites with the composition of Zr58.5Ti14.3Nb5.2Cu6.1Ni4.9Be11.0 were prepared with a vacuum arc melter by the copper mold suction casting. Effect of different normal loads and sliding velocities on the tribological properties of MGM composites was studied. The results showed that the friction coefficient and wear rate of composites initially descended with increasing the normal load and reached a minimum of 0.339 and 1.826 × 10^-4 mm^3/（N m） at 10 N, respectively, then ascended. Similarly, the friction coefficient and wear rate of composites initially decreased with the increase in the sliding velocity and reached a minimum of 0.330 and 2.389 × 10^-4 mm^3/（N m） at 0.4 m/s and 0.3 m/s, respectively, then raised. The wear mechanism of composites was mainly adhesive wear accompanied by abrasive wear at lower normal load and sliding velocity. However, the wear mechanism of composites was abrasive wear and adhesive wear as well as delamination at higher normal load and sliding velocity due to the nucleation and propagation of surface and subsurface cracks during the wear process. The flake-like and particle-like wear debris was the dominant shapes of debris observed.