WFRF:(Huotilainen M)
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Electrochemical investigation of in-service thermal aging in two CF8M cast stainless steels
- Huotilainen, C. (author)
- Ivanchenko, M. (author)
- Ehrnsten, U. (author)
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- KTH Hållfasthetslära (Inst) (creator_code:org_t)
- Elsevier, 2019
- 2019
- English.
- In: Journal of Nuclear Materials. - : Elsevier. - 0022-3115 .- 1873-4820. ; 520, s. 34-40
- Journal article (peer-reviewed)
Abstract
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- In-service thermal aging of CF8M cast austenitic stainless steel was investigated in materials removed from the steam generator inlet and crossover elbows of the Ringhals 2 pressurized water reactor nuclear power plant unit after approximately 92kh of full operating time. The thermal aging of these materials was investigated using the double loop electrochemical potentiokinetic reactivation method, coupled with indentation hardness measurements and microstructural characterizations, to identify correlations between the electrochemical behavior and traditional methods of investigating thermal aging embrittlement effects in cast stainless steels. While this electrochemical method can be easily employed to quantify thermal aging effects in materials aged at higher temperatures (e.g. greater than 350 degrees C), this study highlights the difficulties encountered when electrochemically evaluating the aging of materials exposed to nuclear power plant operating conditions.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
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- art (subject category)
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