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Crystallographic mechanism for fatigue crack propagation through grain boundaries

Abstract:

A crystallographic model is proposed which takes into account both crack-plane twist and tilt effects on crack retardation at grain boundaries. The twist and tilt angles of the crack-plane deflection at a grain boundary are the key factors that control the path and growth rate of a short crack. Because of crack-plane twist, the area between the traces on the grain-boundary plane of the crack planes across the boundary has to be fractured in order for the crack to propagate through the boundar...

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Publisher:
Elsevier Science Ltd
Journal:
Acta Materialia
Volume:
48
Issue:
20
Pages:
4917-4927
Publication date:
2000-12-04
DOI:
ISSN:
1359-6454
URN:
uuid:20978c76-8837-4bef-87ef-14149bfaf7b1
Source identifiers:
109814
Local pid:
pubs:109814
Language:
English

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