第7回
ピーニングによる応力腐食割れ防止効果に関する研究
著者:
前口 貴治,Takahru MAEGUCHI,堤 一也,Kazuya TSUTSUMI,豊田 真彦,Masahiko TOYODA,太田 高裕,Takahiro OHTA,岡部 武利,Taketoshi OKABE,佐藤 知伸,Tomonobu SATO
発刊日:
公開日:
キーワードタグ:
In order to verify stability of residual stress improvement effect of peeing for mitigation of stress corrosion cracking in components of PWR plant, relaxation behavior of residual stress induced by w ater jet peening(WJP) and ultrasonic shot peening(USP) on surface of alloy 600 and its weld metal was investigated under various thermal aging and stress condition considered for actual plant operatio n. In the case of thermal aging at 320-380°C, surface residual stress relaxation was observed at the early st...
英字タイトル:
Study on mitigation of stress corrosion cracking by peening
第6回
加圧水型原子力発電プラントに対する保全(応力腐食割れ対策)
著者:
佐藤 知伸,Tomonobu SATO,岡部 武利,Taketoshi OKABE,沖村 浩司,Koji OKIMURA,豊田 真彦,Masahiko TOYODA,前口 貴治,Takaharu MAEGUCHI
発刊日:
公開日:
キーワードタグ:
As a countermeasure against SCC (stress corrosion cracking), MHI (Mitsubish i Heavy Industries, Ltd.) have developed some residual stress improvement m ethods, as Water Jet Peening (WJP) for components under water condition, a nd Shot Peening by Ultrasonic-wave vibration (USP) for components under air condition. The SCC occurred in high nickel based metal and welding material in pressurized water reactor (PWR) plants has become to be conspicuous iss ue in both Japan and abroad. In this paper, validity of s...
英字タイトル:
Maintenance Technologies for Degradation of Pressurized Water Reactor Power Plants