Correlation of microstructure and stress corrosion cracking initiation behaviour of the fusion boundary region in a SA508 Cl. 3-Alloy 52M dissimilar weld joint in primary pressurized water reactor environment

作者: Lijin Dong , Qunjia Peng , He Xue , En-Hou Han , Wei Ke

DOI: 10.1016/J.CORSCI.2017.12.011

关键词:

摘要: Abstract Correlation of microstructure and stress corrosion cracking (SCC) initiation behaviour the fusion boundary (FB) region in a SA508 Cl. 3-Alloy 52M weld joint primary pressurized water reactor environment was investigated. Cr-depletion at grain strength mismatch FB are two causes for SCC region. The partially mixed zone between dilution (DZ) Alloy 3 has retardation effect on initiation. This is attributed to decrease alleviation strain concentration adjacent DZ.

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