Mechanical factors in primary water stress corrosion cracking of cold-worked stainless steel

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Finite element analysis was performed on a compact tension specimen to determine the stress and strain distributions near a crack tip. Based on the results, the crack tip stain rates by crack advance and creep rates near crack tip were estimated. By comparing the dependence of the mechanical factors on the stress intensity factor and yield stress with that of the SCC crack growth rates, it was tried to identify the main mechanical factor for the primary water stress corrosion cracking (PWSCC) of cold-worked austenitic stainless steels. The analysis results showed that the crack tip normal stress could be the main mechanical factor controlling the PWSCC, suggesting that the internal oxidation mechanism might be the most probable PWSCC mechanism of cold-worked austenitic stainless steels. (C) 2016 Elsevier B.V. All rights reserved
Publisher
ELSEVIER SCIENCE SA
Issue Date
2016-05
Language
English
Article Type
Article
Keywords

HIGH-TEMPERATURE WATER; STRAIN-RATE; CREEP; PREDICTION; ALLOY-600; MODEL

Citation

NUCLEAR ENGINEERING AND DESIGN, v.301, pp.24 - 31

ISSN
0029-5493
DOI
10.1016/j.nucengdes.2016.02.031
URI
http://hdl.handle.net/10203/209314
Appears in Collection
NE-Journal Papers(저널논문)
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