Title: Dry sliding wear and friction characteristics of AA6061 - TiB2/ZrB2 in-situ metal matrix composites at room temperature
Authors: A. Mahamani
Addresses: Department of Mechanical Engineering, Sri Venketeswara College of Engineering and Technology (Autonomous), Chittoor, 517127, A.P, India
Abstract: In-situ synthesis is a process of developing high-performance material with the minimal reinforcement ratio. In this work dry sliding friction and wear behaviour of AA6061 - TiB2/ZrB2 in-situ metal matrix composites are investigated by using pin on disc wear testing machine against high chromium steel counter face at room temperature. The influences of normal load, sliding speed and reinforcement ratio on wear properties are studied. Wear transition maps are generated to establish the scheme of the wear rate and wears transition for a particular sliding condition. Worn-out surface analysis also carried out to study the debris layer formation on the sliding surfaces. Experimental investigation shows that normal load, sliding velocity and reinforcement ratio offer significant influence on wear performance.
Keywords: in-situ composites; TiB2; ZrB2; wear rate; wear resistance; coefficient of friction; wear parameters; worn-out surface; debris layer; wear mode.
International Journal of Surface Science and Engineering, 2017 Vol.11 No.2, pp.148 - 173
Received: 05 Oct 2015
Accepted: 14 Apr 2016
Published online: 20 Jun 2017 *