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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. (doi:10.1016/S0142-1123(03)00148-8).

Record type: Article


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.

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Published date: 2003
Keywords: al bearing alloys, statistical microstructural characterisation, fatigue crack initiation, finite body tessellation


Local EPrints ID: 22424
ISSN: 0142-1123
PURE UUID: 0c1e5ba6-f9ae-4393-a2e3-e06ebfbbe53d
ORCID for P.A.S. Reed: ORCID iD

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Date deposited: 23 Mar 2006
Last modified: 17 Jul 2017 16:22

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Author: M.C. Mwanza
Author: M.R. Joyce
Author: K.K. Lee
Author: S. Syngellakis
Author: P.A.S. Reed ORCID iD

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