Effect of Environment and Prestrain on IASCC of Austenitic Stainless Steels
作者： W. Lai , Z. Jiao , G. S. Was
DOI: 10.1007/978-3-319-48760-1_86
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摘要: The effect of environment and prestrain on IASCC austenitic stainless steels was investigated in post-irradiation CERT tests Ar at 288°C simulated BWR NWC. Two alloys susceptible to were selected for this study, which are commercial alloy 304 high purity Fe-15Crl2Ni. Samples irradiated 5 dpa with 2 MeV protons 360°C strained about 2% 288°C. results showed that the water is key inducing No intergranular cracking observed either following straining up ~3.5%. However, occurred once samples subsequently an additional 1% Cracks tended be long extend over many grain boundaries rather than single facets, perhaps due Ar. Cracking induced by 0.2% plastic strain NWC CP304 3.4% also observed. Normal stress critical determining crack initiation location Fe-15Cr12Ni when because cracked preferentially aligned perpendicular tensile direction.
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