HYDROGEN INDUCED CRACKING IN A FERRITE-AUSTENITE DUPLEX STAINLESS STEEL
HE Jianhong;TANG Xiangyun;CHEN Nanping Tsinghua University
Cite this article:
HE Jianhong;TANG Xiangyun;CHEN Nanping Tsinghua University. HYDROGEN INDUCED CRACKING IN A FERRITE-AUSTENITE DUPLEX STAINLESS STEEL. Acta Metall Sin, 1989, 25(1): 37-41.
Abstract Hydrogen induced cracking in a ferrite-austenite, duplex stainlesssteel has been investigated using compact tension tests. The stress intensity thre-shold K_H of the steel increases with increasing austenite content and decreases withincreasing current density during hydrogen charging. The hydrogen induced crack-ing initiates and propagates on {100} planes of the ferrite. The austenite plays a"fibre-tougthed" role during obstructing crack propagation.
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