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| EVALUATION OF DEGREE OF SENSITIZATION OF STAINLESS STEELS BY MEANS OF EPR METHOD |
| Wu Youlin S.Abe~* T.Murata~(**) (Central Iron and Steel Research Institute;Ministry of Metallurgical Industry;China) R&D Laboratories-Ⅱ Nippon Steel Corp.R&D Loboratories-Ⅰ Nippon Steel Corp. |
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Abstract By means of electrochemical method (EPR method),the effects of various materials and different sensitizing conditions on sensitization degree of Austenic stainless steels are investigated,using the Fe-11% Ni-Cr(6～18%)stainless steels as simulated chromium depleted region.For stainless steels containing no molybdenum it was found that active dissolution occurs at chromuim depleted regions with less than 16% Cr.Thus EPR method is more sensitive than Stra- uss method.After the test,the surfaces of samples were examined by optical microscope.The results are as follows:as the grain boundaries or the vicini- ties of inclusions,pits are first observed with certain directions,then they join with each other to form corrosion grooves.
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Received: 25 February 1985
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Cite this article:
Wu Youlin S.Abe~* T.Murata~(**) (Central Iron and Steel Research Institute;Ministry of Metallurgical Industry;China) R&D Laboratories-Ⅱ Nippon Steel Corp.R&D Loboratories-Ⅰ Nippon Steel Corp.. EVALUATION OF DEGREE OF SENSITIZATION OF STAINLESS STEELS BY MEANS OF EPR METHOD. J Chin Soc Corr Pro, 1985, 5(1): 34-45.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1985/V5/I1/34
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