Hydrogen-induced sustained load cracking in single crystal Fe-3wt.%Si

X. Chen, J. A. Kozubowski, W. W. Gerberich

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Sustained load slow crack growth rate in Fe-3wt%Si single crystals was determined to be about 5 × 10-8 m/s at room temperature in 1 atm gaseous hydrogen. Extensive plastic deformation was observed to accompany crack growth. During crack growth, slip line upsets of about 10 μm spacing were generated behind the advancing crack tip but the crack advance step size was on the order of 1 μm. Further investigation to clarify the mechanism is in progress.

Original languageEnglish (US)
Pages (from-to)245-248
Number of pages4
JournalScripta Metallurgica
Volume22
Issue number2
DOIs
StatePublished - 1988

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