Detection of susceptibility to intergranular corrosion of aged super austenitic stainless steel S32654 by a modified electrochemical potentiokinetic reactivation method

详细信息    查看全文

• 作者：Shucai Zhang ; Zhouhua Jiang ; ^{jiangzh@smm.neu.edu.cn} ; Huabing Li ; ^{huabing_li@163.com} ; ^{lihb@smm.neu.edu.cn} ; Hao Feng ; Binbin Zhang
• 关键词：Super austenitic stainless steel ; Intergranular corrosion ; Electrochemical potentiokinetic reactivation ; Precipitates ; Cr- and Mo-depleted zone
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：25 February 2017
• 年：2017
• 卷：695
• 期：Complete
• 页码：3083-3093
• 全文大小：3879 K
• 卷排序：695

文摘

Precipitation behavior of S32654 at nose temperature (1000 °C) is investigated. A modified DL-EPR method is established to detect IGC susceptibility of S32654. The degree of sensitization increases with aging time and no self-healing occurs. Cr-depleted zone and Mo-depleted zone are observed adjacent to the precipitates. The IGC of S32654 is caused by the Cr- and Mo-depleted zones.