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99453 SENSITIZATION PROPERTIES CERIUM-MODIFIED & IGSCC SUSCEPTIBILITY OF STAINLESS STEELS

Product Number: 51300-99453-SG
ISBN: 99453 1999 CP
Author: Y. Watanabe, T. Tonozuka, T. Shoji, T. Kondo, F. Masuyama
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Effects of cerium addition to austenitic stainless resultant sensitization properties and IGSCC susceptibility in steels on microstructural changes and pressurized high-temperature water have been investigated. Cc-modifications significantly influenced precipitation behavior of carbides and resultant IGC and IGSCC resistance were either improved or degraded depending on Ce content and sensitization conditions. The material with 0.01% Ce almost always showed the lowest reactivation ratio for given heat treatments. Addition of 0.01% Ce to the steel successfully mitigated IGSCC in pressurized high-temperature water in slightly sensitized conditions, at 700°C for 10h or 14h. Higher level of Ce addition was less beneficial. Keywords: rare earth element, cerium, stress corrosion cracking, sensitization, austenitic stainless steel, slow strain rate test, pressurized high-temperature water, carbide distribution
Effects of cerium addition to austenitic stainless resultant sensitization properties and IGSCC susceptibility in steels on microstructural changes and pressurized high-temperature water have been investigated. Cc-modifications significantly influenced precipitation behavior of carbides and resultant IGC and IGSCC resistance were either improved or degraded depending on Ce content and sensitization conditions. The material with 0.01% Ce almost always showed the lowest reactivation ratio for given heat treatments. Addition of 0.01% Ce to the steel successfully mitigated IGSCC in pressurized high-temperature water in slightly sensitized conditions, at 700°C for 10h or 14h. Higher level of Ce addition was less beneficial. Keywords: rare earth element, cerium, stress corrosion cracking, sensitization, austenitic stainless steel, slow strain rate test, pressurized high-temperature water, carbide distribution
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