SYMPOSIA PAPER Published: 01 January 1992

Irradiation-Induced Microchemical Effects and IASCC Initiation


Predicted irradiation-induced enrichment of silicon and depletion of chromium at grain boundaries were consistent with measurements of ion-irradiated stainless steel grain boundary microchemistries. The calibrated solute drag mechanism for silicon enrichment and the inverse-Kirkendall mechanism for chromium depletion were then used to predict behaviors for neutron irradiation conditions relevant to irradiation-assisted stress corrosion cracking. A simple crack chemistry model illustrated how irradiation-induced chromium depletion might affect intergranular corrosion as a function of dose.

Author Information

Simonen, EP
Pacific Northwest Laboratory, Richland, WA
Charlot, LA
Pacific Northwest Laboratory, Richland, WA
Bruemmer, SM
Pacific Northwest Laboratory, Richland, WA
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Developed by Committee: E10
Pages: 621–632
DOI: 10.1520/STP17899S
ISBN-EB: 978-0-8031-5187-1
ISBN-13: 978-0-8031-1477-7