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論文
実機供用条件における Ni基合金の WJP残留応力改善工法による圧縮残留応力の長期安定性予測
著者:
于 麗娜,Lina YU,才田 一幸,Kazuyoshi SAIDA,西本 和俊,Kazutoshi NISHIMOTO,浅井 郁海,Ikumi  ASAI,千種 直樹,Naoki CHIGUSA
発刊日:
公開日:
キーワードタグ:
In order to estimate the stability of the stress improving effect by water jet peening (WJP) residual stress improvement methods during the long-term operation of nuclear power plants, the residual stress in nickel-based alloy 600 has been studied through the kinetics of hardness reduction behavior in practical operation temperatures. Based on the relationship between the residual stress relaxation and the hardness reduction rates, it has been found that in actual operating condition, when the hardness decr...
英字タイトル:
Prediction of Residual Stress Stability Introduced by Water Jet Peening Residual Stress Improvement Method to Ni-based Alloy during Long-Term Operation
論文
炉水環境中における疲労亀裂の 発生・成長挙動に及ぼす温度の影響
著者:
三澤 樹,Tatsuru MISAWA, 北田 孝典,Takanori KITADA, 中村 隆夫,Takao NAKAMURA, 竹田 敏,Satoshi TAKEDA, 釜谷 昌幸,Masayuki KAMAYA
発刊日:
公開日:
キーワードタグ:
It has been clarified that the fatigue life is reduced in the fatigue test of high-temperature and high-pressure water that simulates PWR reactor coolant environment compared to that in the tmosphere, and temperature, strain rate,etc. affect the decrease of fatigue life. In this study, the influence of crack growth behavior on fatigue life of SUS316 in simulated PWR reactor coolant environment of different temperature was investigated. Fatigue tests were conducted under different temperatures (325℃ and 200℃...
英字タイトル:
Influence of Temperature on the Fatigue Crack Initiation and Growth in Reactor Coolant Environment