Effect of the discrete nature of plasticity on fatigue crack propagation

Autor:	F. O. Riemelmoser, H. Kreuzer, Reinhard Pippan
Rok vydání:	2001
Předmět:	Crack closure Materials science General Physics and Astronomy Fracture mechanics Grain boundary Mechanics Dislocation Plasticity Microstructure Fatigue limit Burgers vector
Zdroj:	Le Journal de Physique IV. 11:Pr5-77
ISSN:	1155-4339
DOI:	10.1051/jp4:2001510
Popis:	At cyclic plastic crack tip opening displacements smaller than 100 Burgers vectors per cycle the plasticity is significantly constrained by its discrete nature which is the reason for the intrinsic threshold behavior of fatigue cracks. In this paper the effect of grain boundaries and duplex microstructure on this constraint is investigated and the consequences for the interpretation of the intrinsic fatigue crack propagation behavior in ductile metals are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e5411e31b9cc8419629e7f50f8e34724 https://doi.org/10.1051/jp4:2001510 Zobrazit plný text záznamu