Microstructural characterisation of fatigue crack initiation in Al based plain bearing alloys

Mwanza, M. C., Joyce, M. R., Lee, K. K., Syngellakis, S. and Reed, P. A. S. (2003) Microstructural characterisation of fatigue crack initiation in Al based plain bearing alloys. International Journal of Fatigue, 25 (9-11). pp. 1135-1145. ISSN 0142-1123

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Abstract

The fatigue initiation behaviour of two Al-based bearing lining alloys has been assessed by image analysis tessellation techniques and subsequent adaptive numerical classification approaches. Fatigue initiation occurs by decohesion at Si particles, and in the absence of Si particles decohesion occurs at Sn particles. In both cases, relatively unclustered, large particles initiate fatigue, and the relative position of the nearest neighbour particle seems to have significance. This can be explained qualitatively in terms of strain mismatch arising from differing elastic moduli between the particles and surrounding Al matrix and local stress concentration and superposition effects. The lining alloy containing no Si and high Sn content exhibits more directionality, and a heavier dependence on angular information is found by the classifier.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Computing Sciences
Depositing User:	EPrints Services
Date Deposited:	01 Oct 2010 13:41
Last Modified:	12 Jan 2024 01:24
URI:	https://ueaeprints.uea.ac.uk/id/eprint/3047
DOI:	10.1016/S0142-1123(03)00148-8

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