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Kim, Ji Hyun
UNIST Nuclear Innovative Materials Laboratory(UNIMAT)
Research Interests
  • High temperature water corrosion
  • Liquid metal corrosion
  • Material degradation simulation

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Effects of thermal aging and stress triaxiality on PWSCC initiation susceptibility of nickel-based Alloy 600

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Title
Effects of thermal aging and stress triaxiality on PWSCC initiation susceptibility of nickel-based Alloy 600
Author
Yoo, Seung ChangChoi, Kyoung JoonKim, TaehoKim, Ji Hyun
Issue Date
2016-10
Publisher
KOREAN SOC MECHANICAL ENGINEERS
Citation
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v.30, no.10, pp.4403 - 4406
Abstract
In present study, effects of thermal aging and triaxial stress were investigated in terms of primary water stress corrosion cracking susceptibility. The thermal aging was applied via heat treatment at 400°C and triaxial stress was applied via notched tensile test specimen. The crack initiation time of each specimen were then measured by direct current potential drop method during slow strain rate test at primary water environment. Alloys with 10 years thermal aging exhibited the highest susceptibility to stress corrosion cracking and asreceived specimen shows lowest susceptibility. The trend was different with triaxial stress applied; 20 years thermal aging specimen shows highest susceptibility and as-received specimen shows lowest. It would be owing to change of precipitate morphology during thermal aging and different activated slip system in triaxial stress state.
URI
https://scholarworks.unist.ac.kr/handle/201301/20613
URL
http://link.springer.com/article/10.1007%2Fs12206-016-0901-3
DOI
10.1007/s12206-016-0901-3
ISSN
1738-494X
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