Selective dissolution of austenite in AISI 304 stainless steel by bacterial activity |
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| Authors: | J.J. de Damborenea,A.B. Cristó bal,M.A. Arenas,V. Ló pez,A. Conde |
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| Affiliation: | Department of Corrosion and Protection, Centro Nacional de Investigaciones Metalúrgicas CENIM-CSIC., Av. Gregorio del Amo 8, E-28040 Madrid, Spain |
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| Abstract: | Selective attack in an AISI 304 stainless steel weld metal has been developed after three months in service in well water. Welding zones showed a severe corrosive attack that in some cases led to the steel perforation. Optical and scanning electron microscopy (SEM/EDX) revealed a selective attack. An in-depth analysis showed indications of microbiological activity which could be responsible of the severe attack. |
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| Keywords: | Austenitic stainless steel Microbiologically influenced corrosion Welding Selective dissolution |
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