Abstract

Abstract Stress corrosion cracking (SCC) susceptibilities of a series of iron-based alloys (IBA), including some high-purity irons, were evaluated in lithiated water at temperatures up to 300°C. Inclusion distributions in each material were established using quantitative metallography and energy dispersive x-ray analysis (EDX). Electrochemical measurements were performed to investigate film formation kinetics. Results showed the minimum potential for SCC was a function of the inclusion content. Reducing the inclusion content in IBA moved the minimum potential for SCC in the anodic direction and/or increased the temperature for the onset of cracking but did not eliminate SCC.

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