FRICTION AND WORN SURFACE TOPOGRAPHICAL FEATURES OF AS-CAST, MODIFIED AND HOMOGENIZED ALUMINUM-SILICON ALLOYS
محتوى المقالة الرئيسي
الملخص
The coefficient of friction was experimentally calculated for aluminum-silicon alloys by
connecting a strain gauge to the arm of pin-on-disc wear machine in order to take microstrain
readings from the strain-meter. As-cast and modified aluminum-silicon alloys were thermally
homogenized for long periods of time (1-40hr) in order to study the effect of homogenization on
friction. Scanning electron microscopy was successfully used to build up the mechanism of surface
damage during sliding. The results showed that the coefficient of friction was increased with
increasing bearing pressure for as-cast, modified and homogenized aluminum-silicon alloys.
Thermal homogenization led clearly to remarkable changes in the frictional behavior of as-cast and
modified aluminum-silicon alloys. Many mechanisms were responsible for aluminum-silicon
alloys surface damage during sliding.
تفاصيل المقالة
القسم
كيفية الاقتباس
المراجع
Blau P.J., “Mechanisms for Transitional Friction and Wear Behavior of Sliding Metals”, Wear, 72 (1981) 55.
Clarke J. and Sarkar A.D., “Topographical Features Observed in a Scanning Electron Microscopy Study of Aluminum Alloy Surfaces in Sliding Wear”, Wear, 69 (1981) 1.
Granger D.A., Elliott R., "Solidification of Eutectic Alloys", Metals Handbook, Vol. 15, “Casting”, American Society for Metals, Metals Park, Ohio, 1988.
Halling J., “Principle of Tribology”, Macmillan Pres Ltd. (London) 1979
Mahdavian S.M. and Mai Y.W., “Further Study in Friction, Metallic Transfer and Wear Debris of
Sliding Surfaces”, Wear, 95 (1984) 35.
Mitchell L.A. and Osgood C., “A Theory of Friction and Wear Based on a New Characterization of
Asperity Interactions”, Wear, 40 (1976) 203.
Nayak S. and Dahotre N.B., "Surface Engineering of Aluminum Alloys for Automotive Engine Applications", JOM, Jan. (2004) 46.
Pathak J.P., Torabian H. and Tiwari S.N., "Antiseizure and Antifriction Characteristics of Al-Si-Pb Alloys", Wear, 202 (1997) 134.
Polmear I.J., “Light Metals”, Edward Arnold (London) 1989.
Prasad S.V. and Mecklenburg K.R., "Friction Behavior of Ceramic Fiber-Reinforced Aluminum Metal-Matrix Composite Against a 440C Steel Counterface", Wear, 162-164 (1993) 47.
Rigney D.A., “Fundamentals of Friction and Wear of Materials”, American Society for Metals, Metals Park, Ohio, 1981.
Sakamoto T. and Tsukizoe T., “Metal Transfer in the Frictional Contact of a Rough Hard Surface”,Wear, 47 (1978) 301.
Sarkar A.D. and Clarke J., “Friction and Wear of Aluminum –Silicon Alloys”, Wear, 61 (1980) 157.
Sarkar A.D. and Clarke J., "Wear Characteristics, Friction and Surface Topography Observed in the Dry Sliding of As-Cast and Age-Hardening Al-Si Alloys”, Wear, 75 (1982) 71.
Subhi A.D., “Study of Microstructure and Wear of As-Cast and Modified Aluminum-Silicon Alloys with Titanium”, M.Sc. Thesis, School of Production Engineering and Metallurgy, University of Technology, Baghdad, Iraq, 2000 (In Arabic).
Zhang C., Cheng H.S. and Wang Q.J., "Scuffing Behavior of Piston-Pin/Bore Bearing in Mixed Lubrication-Part : Scuffing Mechanism and Failure Criterion", Trib. Trans., 47 (2004) 1.