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Title: Oxide-induced initiation of stress corrosion cracking in irradiated stainless steel

Abstract

Stainless steel (SS) samples were irradiated with protons at 400 C and strained in 288 C water to examine the role of oxide particles in the irradiation-assisted stress corrosion cracking (IASCC) process. Oxides in the matrix acted as the predominant crack initiation sites, and the amount of cracking scaled with oxide density. Intergranular cracking occurred by mechanical failure of oxide particles that created electrochemical crevices and stress concentrators from which intergranular cracks could propagate. Relatively few of the cracked oxide particles actually led to intergranular cracking in the matrix, which was consistent with the requirement that the crack tip solution had to be deaerated for an aggressive crevice chemistry to form and that the cracks in the oxides had to be well aligned with susceptible grain boundaries. Intergranular cracking occurred only when both the SS was irradiated and when straining was conducted in high-temperature water. This observation supported on IASCC mechanism that required an aggressive environment and an irradiated microstructure.

Authors:
;  [1];  [2]
  1. Univ. of Michigan, Ann Arbor, MI (United States)
  2. General Electric Research and Development, Schenectady, NY (United States)
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
644352
Resource Type:
Journal Article
Journal Name:
Corrosion
Additional Journal Information:
Journal Volume: 54; Journal Issue: 4; Other Information: PBD: Apr 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; STRESS CORROSION; IRRADIATION; STAINLESS STEELS; WATER; TEMPERATURE RANGE 0400-1000 K; CRACKS; OXIDES; GRAIN BOUNDARIES

Citation Formats

Cookson, J M, Was, G S, and Andresen, P L. Oxide-induced initiation of stress corrosion cracking in irradiated stainless steel. United States: N. p., 1998. Web. doi:10.5006/1.3284856.
Cookson, J M, Was, G S, & Andresen, P L. Oxide-induced initiation of stress corrosion cracking in irradiated stainless steel. United States. https://doi.org/10.5006/1.3284856
Cookson, J M, Was, G S, and Andresen, P L. 1998. "Oxide-induced initiation of stress corrosion cracking in irradiated stainless steel". United States. https://doi.org/10.5006/1.3284856.
@article{osti_644352,
title = {Oxide-induced initiation of stress corrosion cracking in irradiated stainless steel},
author = {Cookson, J M and Was, G S and Andresen, P L},
abstractNote = {Stainless steel (SS) samples were irradiated with protons at 400 C and strained in 288 C water to examine the role of oxide particles in the irradiation-assisted stress corrosion cracking (IASCC) process. Oxides in the matrix acted as the predominant crack initiation sites, and the amount of cracking scaled with oxide density. Intergranular cracking occurred by mechanical failure of oxide particles that created electrochemical crevices and stress concentrators from which intergranular cracks could propagate. Relatively few of the cracked oxide particles actually led to intergranular cracking in the matrix, which was consistent with the requirement that the crack tip solution had to be deaerated for an aggressive crevice chemistry to form and that the cracks in the oxides had to be well aligned with susceptible grain boundaries. Intergranular cracking occurred only when both the SS was irradiated and when straining was conducted in high-temperature water. This observation supported on IASCC mechanism that required an aggressive environment and an irradiated microstructure.},
doi = {10.5006/1.3284856},
url = {https://www.osti.gov/biblio/644352}, journal = {Corrosion},
number = 4,
volume = 54,
place = {United States},
year = {Wed Apr 01 00:00:00 EST 1998},
month = {Wed Apr 01 00:00:00 EST 1998}
}