Environmental Fatigue of Metallic Materials in Nuclear Power Plants – A Review of Korean Test Programs

장창희; 장훈; 홍종대; 조현철; 김태순; 이재곤

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자료유형: 학술저널

저자정보: 장창희 장훈 홍종대 조현철 김태순 이재곤

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제45권 제7호

발행연도: 2013.1

수록면: 929 - 940 (12page)

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Environmental fatigue of the metallic components in light water reactors has been the subject of extensive research andregulatory interest in Korea and abroad. Especially, it was one of the key domestic issues for the license renewal of operatingreactors and licensing of advanced reactors during the early 2000s. To deal with the environmental fatigue issue domestically,a systematic test program has been initiated and is still underway. The materials tested were SA508 Gr.1a low alloy steels,316LN stainless steels, cast stainless steels, and an Alloy 690 and 52M weld. Through tests and subsequent analysis, themechanisms of reduced low cycle fatigue life have been investigated for those alloys. In addition, the effects of temperature,dissolved oxygen level, and dissolved hydrogen level on low cycle fatigue behaviors have been investigated. In this paper, thetest results and key analysis results are briefly summarized. Finally, an on-going test program for hot-bending of 347 stainlesssteel is introduced.

#Environmental Fatigue #Low Cycle Fatigue #Microstructure Effect #Dynamic Strain Ageing #Hydrogen Induced Cracking

참고문헌 (24)

참고문헌 신청

ASME / 1989 / ASME Boiler and Pressure Vessel Code III Division 1 / The American Society of Mechanical Engineers

C. Jang / 2001 / Lifetime Evaluation and Aging Management Program for Kori Unit 1 Reactor Pressure Vessel

H. Cho / 2007 / Fatigue Life and Crack Growth Mechanisms of the Type 316LN Austenitic Stainless Steel in 310 ºC Deoxygenated Water / J. of Nucl. Sci. and Technol. 44 : 1007

H. Cho / 2008 / Low Cycle Fatigue Behaviors of Type 316LN Austenitic Stainless Steel in 310 ºC Deaerated Water - Fatigue Life and Dislocation Structure Development / Mater.

H. Jang / 2013 / Low- Cycle Fatigue Behaviors of Two Heats of SA508 Gr.1a Low Alloy Steel in 310 ºC Air and Deoxygenated Water-Effects of Dynamic Strain Aging and Microstruc

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