Damage and Crack Initiation Behavior of Duplex Stainless Steel during Cyclic Loading

Abstract:

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Two phase metals during cyclic loading can suffer from non-uniform load or strain sharing between the phases due to elastic/plastic anisotropy. This can strongly influence the fatigue damage and crack initiation behavior. In this study, the fatigue damage and crack initiation behavior of an austenitic-ferritic duplex stainless steel with anneal/quenched and aged conditions has been studied by both experimental investigations and simulation using multi-scale material modeling. It was found, both experimentally and via simulations, that the material damage and crack initiation start in the ferrite phase in the material with the anneal/quenched condition and in either the ferrite or austenite phase in the material with the aged condition, mainly in the weakest phase if the deformation hardening is considered.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz

Pages:

1117-1122

DOI:

10.4028/www.scientific.net/KEM.324-325.1117

Citation:

G. C. Chai and R. Lillbacka, "Damage and Crack Initiation Behavior of Duplex Stainless Steel during Cyclic Loading ", Key Engineering Materials, Vols. 324-325, pp. 1117-1122, 2006

Online since:

November 2006

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Price:

$35.00

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