Wear Characteristics of Ti-6Al-4V Alloy at 20-400°C

• Published in: Tribology transactions Vol. 55; no. 2; pp. 185 - 190
• Main Authors: Cui, X. H., Mao, Y. S., Wei, M. X., Wang, S. Q.
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01.03.2012; Taylor & Francis; Taylor & Francis Inc
• Subjects: Applied sciences; Exact sciences and technology; Friction, wear, lubrication; Load; Machine components; Mechanical engineering. Machine design; Nonferrous Alloy; Oxidative Wear; Oxides; Titanium; Titanium alloys; Tribology; Unlubricated Friction; Wear Mechanisms; Wear resistance; Wear tests; Sliding wear; Wear test; Tribochemical reaction; Oxides; Metal; Alloy-Ti90Al6V4; Titanium base alloys; Dry friction; Nonferrous Alloy; Unlubricated Friction; Oxidative degradation; Titanium; Non ferrous alloy; Wear Mechanisms; Oxidative Wear; Titanium oxide; Sliding friction; Tribology
• ISSN: 1040-2004; 1547-397X
• DOI: 10.1080/10402004.2011.647387

Tribo-oxides of titanium alloy are usually reported to provide low protection from wear. However, in this research, tribo-oxides provide a protective effect for wear. Dry sliding wear tests were performed for Ti-6Al-4V alloy under loads of 50-250 N at 20-400°C. Ti-6Al-4V alloy presented different wear behavior at 400°C than at 20-200°C. At 20°C, the wear loss increased linearly with increased load. The wear loss at 200°C marginally increased under 50-150 N loads and increased rapidly under a load of 200 N, slightly higher than at 20°C. At 400°C, the wear loss decreased under loads of 50-100 N, slightly increased and had the lowest value under loads of 100-200 N, and finally increased rapidly at loads above 200 N. The prevailing oxidative mild wear and the lowest wear loss at 400°C were attributed to the protective effect of tribo- oxides.