Temperature influence on SCC behaviour of duplex stainless steel
作者： C. S. Brandolt , M. A. Rosa , L. B. Ramos , R. M. Schroeder , C. F. Malfatti
DOI: 10.1080/02670836.2016.1183069
关键词: Ferrite (iron) 、 Electrolyte 、 Chloride 、 Materials science 、 Cathodic protection 、 Metallurgy 、 Elongation 、 Austenite 、 Electrochemical potential 、 Stress corrosion cracking
摘要: Some studies have related damages in duplex stainless steel (DSS) structures due to stress corrosion cracking (SCC), however, different mechanisms are observed depending of the electrolyte, temperature, electrochemical potential and composition. Wherefore, SCC AISI 318 DSS a 115 000 ppm chloride solution at 25 70°C were investigated. The results showed that cracks propagated both phases, ferrite austenite. A reduction elongation was anodic potentials caused by dissolution cathodic below −650 mVECS −750 mVECS 25°C mechanism. Accordingly, more susceptible protective determined for temperatures.
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