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김지현

Kim, Ji Hyun
UNIST Nuclear Innovative Materials Lab.
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Effects of dissolved hydrogen on crack growth rate of warmrolled 316L austenitic stainless steel in primary water condition

Author(s)
Choi, KJYoo, SCKim, THwang, SSChoi, MJKim, Ji Hyun
Issued Date
2015-07-19
DOI
10.1115/PVP201545417
URI
https://scholarworks.unist.ac.kr/handle/201301/34985
Fulltext
http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2472226
Citation
ASME 2015 Pressure Vessels and Piping Conference, PVP 2015
Abstract
With the extension of pressurized water reactor's design life or continued operation, more careful study on the integrity of the internal structures needs to be pursued. In this study, warmrolling and heat-treatment were applied to 316L stainless steel, in order to simulate the effect of radiation damage such as hardening and radiation-induced grain boundary segregation. And, the crack growth rate testing under constant load condition was performed in the primary water conditions of a pressurized water reactor. Also, in order to investigate the effect of dissolved hydrogen on the crack growth, the dissolved hydrogen concentration was varied between 30 to 50 cc/kg in simulated primary water condition of a pressurized water reactor. The warm-rolled specimens showed the higher crack growth rate than as-received one. Also, the crack growth rate increased as the dissolved hydrogen concentration increases.
Publisher
American Society of Mechanical Engineers (ASME)
ISSN
0277-027X

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