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Effect of chloride deposition on stress corrosion cracking of 316L stainless steel used for intermediate level radioactive waste containers

Lookup NU author(s): Octavio ALBORES-SILVA, Dr Alasdair Charles

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Abstract

This work analysed the effect of chloride deposition on the susceptibility to atmospherically induced stress corrosion cracking (AISCC) of stainless steel type AISI 316L used to manufacture containers for radioactive intermediate level waste in the UK. Using U-bend specimens contaminated with MgCl2, a threshold deposition for AISCC occurrence has been found above chloride contamination levels of 10 and 25 mg cm(-2) at 50 and 30 degrees C respectively at the equilibrium relative humidity (RH) of the contaminant salt (similar to 30% RH). Higher contamination levels were required to produce cracking at 60% RH. Based on crack depth data and contaminated area characterisation, it was found that susceptibility to AISCC is affected by the liquid film volume, thickness and continuity.

Publication metadata

Author(s): Albores-Silva OE, Charles EA, Padovani C

Publication type: Article

Publication status: Published

Journal: Corrosion Engineering Science and Technology

Year: 2011

Volume: 46

Issue: 2

Pages: 124-128

Print publication date: 01/04/2011

ISSN (print): 1478-422X

ISSN (electronic): 1743-2782

Publisher: Maney Publishing

URL: http://dx.doi.org/10.1179/1743278210Y.0000000004

DOI: 10.1179/1743278210Y.0000000004

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