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
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.
Present address: Department of Mechanical Engineering, National Institute of Technology, Sikkim, Barfung Block Ravangla Sub-Division, South Sikkim 737139, Sikkim, India.
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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. https://doi.org/10.1115/1.4043642
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