Multi-field modeling of hydrogen transport and fracture in group 4 transition metals

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Multi-field modeling of hydrogen transport and fracture in group 4 transition metals

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Publication Conference Paper, peer reviewed
Title Multi-field modeling of hydrogen transport and fracture in group 4 transition metals
Author(s) Jernkvist, Lars Olof ; Massih, Ali R
Date 2012
Editor(s) Somerday, B. D.; Sofronis, P.
English abstract
This work deals with a computational model for hydrogen transport, hydrogen induced deformation, embrittlement and fracture in hydride forming metals, notably Ti and Zr. The model uses a continuum description of the two-phase (alpha-phase metal plus delta-phase hydride) material, and solves the multi-field partial differential equations for temperature- and stress-directed hydrogen diffusion together with mechanical equilibrium in a three-dimensional finite element setting. Point-kinetics models are used for metal-hydride phase transfor¬mation and stress-directed orientation of hydrides, while a cohesive zone fracture model caters for initiation and propagation of cracks. The model as a whole is versatile and can be used to study a wide range of problems and conditions involving transport of hydrogen by directed diffusion in combination with hydride precipitation and fracture. The applicability of the model is demon-strated by simulations of fracture tests on a hydrogen-charged Zr-Nb alloy.
Link https://www.asme.org/products/books/international-hydrogen-conference-ihc-2012 (external link to publication)
Publisher ASME
Host/Issue Proceedings of the International Hydrogen Conference (IHC 2012): Hydrogen-Materials Interactions;
Pages 717-726
Language eng (iso)
Subject(s) Technology
Research Subject Categories::TECHNOLOGY
Note International Hydrogen Conference (IHC 2012): Hydrogen-Materials Inter... (see Details for more)
Handle http://hdl.handle.net/2043/16904 Permalink to this page
Link http://www.conferences.illinois.edu/conferences/conferenceviewer2/view.cfm?conf=20039&page=20280&theme=&palette=fire (external link to related web page)

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