Internal oxidation and crack susceptibility of alloy 310S stainless steel after long term exposure to supercritical water at 500 °C

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• 作者：Yashar Behnamian^a ; ^{behnamia@ualberta.ca} ; Amir Mostafaei^b ; Alireza Kohandehghan^a ; Babak Shalchi Amirkhiz^c ; Jian Li^c ; Ramin Zahiri^a ; Ermia Aghaie^a ; Wenyue Zheng^c ; David Guzonas^d ; Markus Chmielus^b ; Weixing Chen^a ; ^{Weixing.chen@ualberta.ca} ; Jing Li Luo^a ; ^{Jingli.luo@ualberta.ca}
• 关键词：Alloy 310S stainless steel ; Electron microscopy ; High temperature corrosion ; Oxidation ; Supercritical water ; Micro-crack initiation
• 刊名：The Journal of Supercritical Fluids
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：120
• 期：part_P1
• 页码：161-172
• 全文大小：8273 K
• 卷排序：120

文摘

High temperature oxidation of alloy 310S stainless steel in supercritical water (SCW). Micro-crack initiation in alloy 310S stainless steel exposed to SCW (500 °C/25 MPa). Oxide layers including Fe3O4 (outer), Fe-Cr spinel (inner), [Mn,Cr]2O3 (transition). Carbide formation and Cr depletion resulted in grain boundary embrittlement. Crack tip was filled with Cr, O, C and Si elements while depleted from Cr and Fe.