2011-Al铝合金摩擦.pdf

Materials Science and Engineering B 168 (2010) 176–181 Contents lists available at ScienceDirect Materials Science and Engineering B j o u rn al h omepage: w w w. elsev /locate/mseb Friction and wear behavior of surface nanocrystallized aluminium alloy under dry sliding condition N. Arun Prakash a , R. Gnanamoorthy b,∗ , M. Kamaraj c a Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India b Indian Institute of Information Technology, Design and Manufacturing (IIITDM) Kancheepuram, Chennai 600036, India c Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India a r t i c l e i n f o a b s t r a c t Article history: One way of improving the surface properties of engineering material is by reducing the grain size at Received 31 July 2009 the surface. Controlled ball impact process is developed for producing surface nanocrystallization and Received in revised form 31 October 2009 improves the surface mechanical properties by inducing compressive residual stress on the metallic Accepted 4 November 2009 materials. Improvement in the surface mechanical properties will affect the tribological properties. This paper reports the influence of the surface nanocrystallization on the tribological properties of aluminium Keywords: alloy. Tribological properties were evaluated under dry sliding conditions using a reciprocating wear Controlled ball impact p