Park, Kyoung-Won Shibutani, Yoji 2024-01-20T16:35:03Z 2024-01-20T16:35:03Z 2021-09-05 2011-07 0360-3199 https://pubs.kist.re.kr/handle/201004/130218 To investigate the mechanism of hydrogen embrittlement in amorphous membranes, changes in the stress-strain curves of an amorphous Ni90Al10 model membrane as a function of hydrogen concentration were examined using Molecular Dynamics (MD) simulations. In addition, the fractional change of short-range ordered (SRO) structures during uniaxial tensile deformation was scrutinized using the Voronoi tessellation method. By correlating these structural evolutions related to volume expansion with changes in the mechanical property, the hydrogen embrittlement phenomenon occurring in the amorphous membrane was discussed with respect to the abrupt increase in the degree of strain localization during deformation. The possibility, not only of hydrogen embrittlement, but also of hydrogen-induced ductility enhancement, was demonstrated by the decrease in the degree of strain localization. Finally, we proposed a fundamental mechanism that can explain these overall phenomena occurring in the amorphous membrane by the introduction of hydrogen. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD MEDIUM-RANGE ORDER METALLIC GLASSES ELECTRON-DIFFRACTION MOLECULAR-DYNAMICS ICOSAHEDRAL ORDER LATTICE-DEFECTS PACKING DENSITY ATOMIC PACKING ALLOYS EMBRITTLEMENT Effect of hydrogenation on the mechanical property of amorphous Ni90Al10 membranes Article 10.1016/j.ijhydene.2011.05.019 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.36, no.15, pp.9324 - 9334 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 36 15 9324 9334 scie scopus 000292944500059 2-s2.0-79958820857 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article MEDIUM-RANGE ORDER METALLIC GLASSES ELECTRON-DIFFRACTION MOLECULAR-DYNAMICS ICOSAHEDRAL ORDER LATTICE-DEFECTS PACKING DENSITY ATOMIC PACKING ALLOYS EMBRITTLEMENT Amorphous membrane Structural change Hydrogen embrittlement Mechanical property Strain localization