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Abstract
This paper presents a critical review of current understanding of the effect of hydrogen on fracture and fatigue of metals and alloys. First, microstructures found immediately beneath hydrogen-induced fracture surfaces in various materials are presented. Then, recent progress toward the fundamentals of hydrogen-induced fracture is reported. Lastly, a recent attempt to model hydrogen embrittlement by linking the macroscale (e.g. applied load and hydrogen content) and the operating microscopic degradation mechanism at the local microstructural defect level is reviewed.
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1 Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA; International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka, Fukuoka, Japan
2 Material Surface and Interface Science Research Department, Steel Research Laboratory, JFE Steel Corporation, Kawasaki, Kanagawa, Japan; International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka, Fukuoka, Japan
3 Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, USA; International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka, Fukuoka, Japan
4 Institut für Materialphysik, Georg-August-Universität Göttingen, Göttingen, Germany
5 Sandia National Laboratories, Livermore, CA, USA; International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka, Fukuoka, Japan





