Stress corrosion cracking under low stress: Continuous or discontinuous cracks?

Autor:	L.J. Qiao, Alex A. Volinsky, Yu Yan, Longkui K. Zhu, Jinxu X. Li
Rok vydání:	2014
Předmět:	Low stress Materials science medicine.diagnostic_test General Chemical Engineering Metallurgy Computed tomography General Chemistry Finite element method Corrosion medicine General Materials Science Anodic dissolution Composite material Stress corrosion cracking
Zdroj:	Corrosion Science. 80:350-358
ISSN:	0010-938X
DOI:	10.1016/j.corsci.2013.11.057
Popis:	Two-dimensional and three-dimensional crack morphologies of stress corrosion cracking (SCC) were studied by serial-sectioning and synchrotron-based X-ray computed tomography. Discontinuous surface cracks were actually continuous inside the specimen, which matched typical river-like fractographs and finite element simulations. A low stress SCC model was created, where a main crack continuously grew along the main propagation direction (MPD) due to anodic dissolution; then, discontinuous secondary microcracks emanated from MPD, angularly extending to the two sides of MPD. Finally, some of the secondary microcracks reached the sample surface, resulting in the formation of discontinuous surface cracks.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fe7d06c64f0e24c7f1d02439f81029b2 https://doi.org/10.1016/j.corsci.2013.11.057 Zobrazit plný text záznamu Full Text from ScienceDirect