Friction stir processing is performed on RZ 5 Mg alloy to produce surface metal matrix composites reinforced with hard reinforcement particles. Boron carbide, multiwalled carbon nanotubes, and a mixture of zirconia and alumina particle reinforcements were introduced. The developed surface composites (SCs) exhibited lower wear rates at various normal loads than the base RZ 5 Mg alloy owing to their improved microhardness. The wear resistance of the composites was 1.2–1.9 times greater than the base alloy, and hence, the wear rates were 18–50% lower than the base alloy. Maximum reduction in wear rate is observed in B4C-reinforced SC. Abrasion, adhesion, and oxidative wear mechanisms are operational during the wear test performed at loads ranging between 10 N and 75 N.
Wear Characteristics of Friction Stir Processed Magnesium RZ 5 Composites
Indian Institute of Technology Delhi,
Delhi 110 016, India
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received June 6, 2018; final manuscript received November 16, 2018; published online January 16, 2019. Assoc. Editor: Longqiu Li.
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Vedabouriswaran, G., and Aravindan, S. (January 16, 2019). "Wear Characteristics of Friction Stir Processed Magnesium RZ 5 Composites." ASME. J. Tribol. April 2019; 141(4): 041601. https://doi.org/10.1115/1.4042039
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