Tribological characterizations of composites are primarily focused on the evaluation of wear resistance (WR) and/or the coefficient of friction, although roughness of abraded surfaces (RASs) is one of the key factors that also determines tribo-performances. This study is aimed at modeling RAS in conjunction with WR considering experimental results of Al-matrix/alumina composites performed under two-body abrasion following the central composite design method. Influences of different in situ and ex situ parameters on tribo-responses were analyzed and modeled using analysis of variance, the response surface method, and multi-response optimization. The WR of the selected system was maximized at around 15 wt% alumina at which RAS was also the highest. The positive role of reinforcement on WR and its adverse effect on RAS were explained by micro-mechanisms of abrasion.
Modeling of Abraded Surface Roughness and Wear Resistance of Aluminum Matrix Composites
Present address: Department of Mechanical Engineering, National Institute of Technology, Sikkim, Barfung Block Ravangla Sub-Division, South Sikkim 737139, Sikkim, India.
Contributed by the Tribology Division of ASME for publication in the Journal of Tribology. Manuscript received February 11, 2019; final manuscript received April 25, 2019; published online May 17, 2019. Assoc. Editor: Yi Zhu.
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Sardar, S., Pradhan, S. K., Karmakar, S. K., and Das, D. (May 17, 2019). "Modeling of Abraded Surface Roughness and Wear Resistance of Aluminum Matrix Composites." ASME. J. Tribol. July 2019; 141(7): 071601. doi: https://doi.org/10.1115/1.4043642
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