青木 政徳
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実機供用2 相ステンレス鋳鋼の熱時効評価
著者:
山田 卓陽,Takuyo YAMADA,藤井 克彦,Katsuhiko FUJII,青木 政徳,Masanori AOKI,有岡 孝司,Koji ARIOKA
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aging hardening Atom-probe analysis cast duplex stainless steel G-phase spinodal decomposition thermal-aging
山田 卓陽,Takuyo YAMADA,藤井 克彦,Katsuhiko FUJII,青木 政徳,Masanori AOKI,有岡 孝司,Koji ARIOKA
発刊日:
公開日:
キーワードタグ:
aging hardening Atom-probe analysis cast duplex stainless steel G-phase spinodal decomposition thermal-aging
In this study, thermal-aging evaluation has been performed using service aged elbow pipe in PWR plant, aged at 320℃ for 196,500h. As a result, micro Vickers hardness of ferrite in service material (SCS14A), HV(0.025) was 616~630. Since micro Vickers hardness of un-aged ferrite phase is about HV(0.025)=300 in commercial SCS14A, the increasing of ferrite hardness during aging was 300. Cr-rich and Fe-rich regions were observed in the ferrite phase using Atom-probe analysis. In addition, Ni, Si and Mo clus...
英字タイトル:
Thermal-aging evaluation of on site aged cast duplex stainless steel
英字タイトル:
Thermal-aging evaluation of on site aged cast duplex stainless steel