扫描振动探针对焊接304L奥氏体不锈钢的敏化行为研究  

Study on sensitization behavior of welded type 304L austenitic stainless steel using scanning vibrating probe

作　　者：黄发[1] 胡凡[1] 周庆军[1] 

机构地区：[1]宝山钢铁股份有限公司研究院,上海201900

出　　处：《宝钢技术》2016年第1期23-27,共5页Baosteel Technology

摘　　要：焊缝等特殊材料结构的敏化会导致其耐晶间腐蚀和晶间应力腐蚀性能降低,传统的双环电化学动电位再活化法(EPR)不能准确地检测出焊缝材料的敏化信号,从而做出未发生敏化的错误判断,给材料的使用带来风险。采用扫描振动探针(SVP)的方法很好地解决了这一难题,成功地检测到窄焊缝区域的敏化特征。Sensitization of special structures like weld seams reduces the resistance of materials to intergranular corrosion and intergranular stress corrosion cracking. However, the degree of sensitization in these seams could not be detected by the traditional electrochemical potentiokinetic reactivation（ EPR） measurement using the double loop method. Results based on non-effective tests bring risks to the application of materials. The problem is solved by scanning vibrating probe（ SVP）,which successfully detected the sensitization signals of the narrow weld seams.

关 键 词：焊缝 敏化 扫描振动探针 

分 类 号：TG457.11[金属学及工艺—焊接]