University of Illinois Urbana-Champaign

Micromechanics approach to study of hydrogen transport and embrittlement

Taha, Abdelwahab; Sofronis, Petros

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https://hdl.handle.net/2142/112607

Description

Title
Micromechanics approach to study of hydrogen transport and embrittlement
Author(s)
  • Taha, Abdelwahab
  • Sofronis, Petros
Issue Date
1999-01
Keyword(s)
  • Hydrogen Transport
  • Hydrogen Embrittlement
  • Hydrogen Related Fractures
Abstract
The mechanisms of hydrogen related fracture are briefly outlined. Previous investigations on the physics and treatment of the hydrogen transport processes are reviewed. A hydrogen diffusion model based on the interaction of hydrogen induced strain in the lattice with local material elastoplasticity is presented. Finite element studied were carried out to analyze the hydrogen distribution in the neighborhood of a blunting crack tip under small scale yielding conditions and in the neighborhood of a rounded notch in a 4-point bend specimen. The calculated hydrogen concentration profiles and experimental observations of embrittlement in high strength steels are used to make evaluative statements on the occurrence of the first microcracking event.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 899
  • 1999-6001
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112607
Sponsor(s)/Grant Number(s)
Energy Department DEFG02-91ER45439
Copyright and License Information
Copyright 1999 Board of Trustees of the University of Illinois

Owning Collections

Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
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.