ショットピーニングを施したニッケル基合金溶接部 の熱履歴による圧縮残留応力と耐粒界腐食性の変化
英字タイトル:
Change of compressive residual stress and intergranular corrosion resistanceafter thermal history in nickel base alloy welds by shot peening
著者:
西川 聡 Satoru NISHIKAWA 大井 浩一 Koichi OOI
発刊日:
公開日:
Compressive residual stressIntergranular corrosionresistanceNickel base alloy weld metalShot peeningThermal aging treatmentThermal cycle
Change of compressive residual stress and intergranular corrosion resistanceafter thermal history in nickel base alloy welds by shot peening
著者:
西川 聡 Satoru NISHIKAWA 大井 浩一 Koichi OOI
発刊日:
公開日:
カテゴリ: 第9回
キーワードタグ:Compressive residual stressIntergranular corrosionresistanceNickel base alloy weld metalShot peeningThermal aging treatmentThermal cycle
概要
Shot peening process is countermeasures to prevent stress corrosion cracking in nuclear power plant components. It is necessary to confirm whe ther the compressive residual stress exerted by stress improvement processes can be sustained under operation environment. In order to evaluate stability of compressive residual stress, the nickel base alloy welded specimen was subjected to thermal cycles 10 times where the peak temper ature is 593 K. On the other hand, carrying out shot peening increases the intergranular corrosion resistance of nickel base alloy weld metals.
