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Title:Hydrogen induced shear localization of plastic flow in metals and alloys
Author(s):Sofronis, Petros; Aravas, Nikolaos
Subject(s):Hydrogen Induced Shear Localization
Plastic Flow
Abstract:It is well known that hydrogen enhanced localized plasticity (HELP) is a viable mechanism for hydrogen embrittlement supported by experimental observations. The objective of this work is to reveal the role of hydrogen in possibly localizing the macroscopic deformation into bands of intense shear from a solid mechanics point of view. The hydrogen effect on material deformation is modeled through the hydrogen induced volume dilatation and the reduction in the local flow stress upon hydrogen dissolution into the lattice. Hydrogen in reversible traps associated with the plastic deformation is always in local equilibrium with interstitial hydrogen that is also assumed to be always in equilibrium with local stress. The analysis of the plastic deformation and the conditions for localization are carried out in plane strain uniaxial tension. The localization criteria employed are those established by the work of Rice (1976) and Rudnicki and Rice (1975).
Issue Date:1999-06
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 911
Genre:Technical Report
Sponsor:Energy Department DEFGO2-91ER45439
Rights Information:Copyright 1999 Board of Trustees of the University of Illinois
Date Available in IDEALS:2021-11-04

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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