Abstract
S-phase produced by low temperature plasma carburizing treatment was studied for the feasibility in reducing the susceptibility to hydrogen embrittlement (HE) of metastable AISI 304 stainless steel. It is demonstrated by slow strain-rate tensile (SSRT) tests that samples with S-phase coatings have higher resistance to HE comparing with untreated counterparts. Meanwhile, “in situ” EBSD investigations have shown that hydrogen induced phase transition (HIPT) is suppressed by S-phase coatings, which is beneficial to improving the resistance to HE.
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