TY - JOUR
T1 - The Role of Microstructure in Hydrogen-Induced Fatigue Failure of 304 Austenitic Stainless Steel
AU - Nygren, K. E.
AU - Nagao, A.
AU - Sofronis, P.
AU - Robertson, I. M.
N1 - Funding Information:
KEN acknowledges partial and IMR full support from National Science Foundation, through Award No. CMMI-1406462. PS and KEN acknowledge partial financial support from the International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), sponsored by the World Premier International Research Center Initiative (WPI), MEXT, Japan. KEN, AN, and PS acknowledge the support of JFE Steel Corporation. The electron microscopy was carried out in part in the Frederick Seitz Materials Research Laboratory at the University of Illinois and in part in the Center for Microanalysis of Materials at the University of Wisconsin-Madison, which is partially by NSF Materials Research Science and Engineering Center through award DMR-1121288.
Publisher Copyright:
© 2020, The Minerals, Metals & Materials Society and ASM International.
PY - 2020/11/1
Y1 - 2020/11/1
N2 - The effect of 104 mass ppm of hydrogen on the evolved microstructures associated with accelerated fatigue failure in type 304 austenitic stainless steel is reported. The fracture surface morphology changed from ductile striations to mixed mode that appeared “quasi-cleavage-like” and “flat.” Detailed microstructural characterization determined that these fractures were along the austenite–martensite interfaces. The morphology and orientation of the strain-induced martensite were impacted by the presence of hydrogen. Hydrogen constrained the formation of α′-martensite into linear, planar bands in the grains nearest the fracture surface, and ε-martensite was formed between the α′-martensite bands. The dislocation structure generated by the cyclic loading and the restriction of the martensitic transformation to specific forms by hydrogen is explained through the hydrogen-enhanced localized plasticity mechanism.
AB - The effect of 104 mass ppm of hydrogen on the evolved microstructures associated with accelerated fatigue failure in type 304 austenitic stainless steel is reported. The fracture surface morphology changed from ductile striations to mixed mode that appeared “quasi-cleavage-like” and “flat.” Detailed microstructural characterization determined that these fractures were along the austenite–martensite interfaces. The morphology and orientation of the strain-induced martensite were impacted by the presence of hydrogen. Hydrogen constrained the formation of α′-martensite into linear, planar bands in the grains nearest the fracture surface, and ε-martensite was formed between the α′-martensite bands. The dislocation structure generated by the cyclic loading and the restriction of the martensitic transformation to specific forms by hydrogen is explained through the hydrogen-enhanced localized plasticity mechanism.
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U2 - 10.1007/s11661-020-05977-w
DO - 10.1007/s11661-020-05977-w
M3 - Article
AN - SCOPUS:85090474410
SN - 1073-5623
VL - 51
SP - 5704
EP - 5714
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 11
ER -