Tracking the evolution of intergranular corrosion through twin-related domains in grain boundary networks

Christopher Barr, Sebastian Thomas, James Hart, Wayne Harlow, Elaf Anber, Mitra Taheri

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Tailoring the grain boundary network is desired to improve grain boundary-dependent phenomena such as intergranular corrosion. An important grain boundary network descriptor in heavily twinned microstructures is the twin-related domain, a cluster of twinrelated grains. We indicate the advantages of using twin-related domains and subsequent statistics to provide new insight into how a grain boundary networks respond to intergranular corrosion in a heavily twinned grain boundary engineered 316L stainless steel. The results highlight that intergranular corrosion is typically arrested inside twin-related domains at coherent twins or low-angle grain boundaries. Isolated scenarios exist, however, where intergranular corrosion propagation persists in the grain boundary network through higher-order twin-related boundaries.
Original languageEnglish
Article number14
Number of pages10
Journalnpj Materials Degradation
Volume2
DOIs
Publication statusPublished - 3 Apr 2018

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