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  Dislocation-based finite element modelling of hydrogen embrittlement in steel alloys

Abdelmawla, A., Hatem, T. M., & Ghoniem, N. M. (2018). Dislocation-based finite element modelling of hydrogen embrittlement in steel alloys. In Minerals, Metals and Materials Series (pp. 213-223). Springer International Publishing.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-E846-B Version Permalink: http://hdl.handle.net/21.11116/0000-0001-E862-B
Genre: Conference Paper

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 Creators:
Abdelmawla, Amir1, Author              
Hatem, Tarek M.2, 3, Author              
Ghoniem, Nasr M.4, Author              
Affiliations:
1Centre for Simulation Innovation and Advanced Manufacturing (SIAM), The British University in Egypt (BUE), El-Sherouk City, Cairo, Egypt, persistent22              
2Centre for Simulation Innovation and Advanced Manufacturing, The British University in Egypt, El-Sherouk City, Cairo, Egypt, persistent22              
3Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, escidoc:1863381              
4Department of Mechanical and Aerospace Engineering, University of California at Los Angeles (UCLA), 420 Westwood Plaza, Los Angeles, CA, USA, persistent22              

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Free keywords: Alloy steel; Atoms; Constitutive models; Finite element method; High strength alloys; High strength steel; Single crystals; Tensile testing, Catastrophic failures; Constitutive relations; Dislocation density model; Dislocation mobility; Effect of hydrogen; Finite element modelling; Hydrogen solutes; Mechanical behavior, Hydrogen embrittlement
 Abstract: Mechanical properties of many metals are greatly influenced by hydrogen solutes causing a well-known phenomenon of Hydrogen Embrittlement (HE). Hydrogen atoms affect the dislocation core, materials cohesion, and/or vacancies clustering causing the material capacity for plastic deformation to decrease. Such degradation in performance of metals leads to embrittlement resulting of catastrophic failure in structures. In this research, a physically-based constitutive model is developed to study hydrogen embrittlement in steel alloys. The developed model is an extension for Ghoniem-Matthews-Amodeo (GMA) dislocation-based model in order to predict the constitutive relation in the plastic regime for high strength steel alloys while considering hydrogen Effect on plasticity. The proposed physically-based dislocation-density model include the effect of hydrogen solute on dislocation mobility and interaction. The proposed model study the mechanical behavior of high-strength steel of HT-9 tensile test specimen. © The Minerals, Metals Materials Society 2018.

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Language(s): eng - English
 Dates: 2018
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISBN: 9783319725253
DOI: 10.1007/978-3-319-72526-0_20
BibTex Citekey: Abdelmawla2018213
ISSN: 23671181
 Degree: -

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Title: 147th Annual Meeting and Exhibition of the Minerals, Metals and Materials Society, TMS 2018
Place of Event: Phoenix, AZ, USA
Start-/End Date: 2018-03-11 - 2018-03-15

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Title: Minerals, Metals and Materials Series
Source Genre: Proceedings
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Publ. Info: Springer International Publishing
Pages: - Volume / Issue: Part F12 Sequence Number: - Start / End Page: 213 - 223 Identifier: -