Paper Title:

Microstructural Factors Affecting Fatigue Initiation in Various Al Based Bearing Alloys

Periodical Materials Science Forum (Volumes 519 - 521)
Main Theme Aluminium Alloys 2006 - ICAA10
Edited by W.J. Poole, M.A. Wells and D.J. Lloyd
Pages 1071-1076
DOI 10.4028/www.scientific.net/MSF.519-521.1071
Citation M.S. Ali et al., 2006, Materials Science Forum, 519-521, 1071
Online since July, 2006
Authors M.S. Ali, P.A.S. Reed, S. Syngellakis, Andrew J. Moffat, Carl Perrin
Keywords Bearing Alloys, Crack Initiation, Finite Body Tessellation (FBT), Intermetallic, Microscale Fatigue Damage, Plastic Strain, Secondary Phase Particles
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Abstract

Microscale fatigue damage mechanisms in various Al-Sn-Si based bearing alloys used as linings of plain automotive bearings are reported. Extensive work on previously developed alloys has concluded that secondary phase particles such as Sn and Si are potential fatigue initiation sites with a complex combination of various particle geometry parameters. A newly developed alloy contains a number of complex widely scattered intermetallics with much finer and fewer Sn and Si particles. This alloy system appears to be more resistant to initiate microscale fatigue damage compared to the previous systems.