Paper Title:
Hydrogen Embrittlement of High Strength Steels
  Abstract

Hydrogen embrittlement is believed to be one of the main reasons for cracking of structures under stress. High strength steels in these structures often include a ferritic core made of alpha-iron (body centered cubic lattice). We compute the interaction of atomic hydrogen with iron using first principles. The interstitial hydrogen can be placed in two high symmetry positions: octahedral and tetrahedral sites. Our calculations provide diffusion barriers between these sites. These barriers have been analyzed to understand the propagation of hydrogen through the iron lattice. We analyze how these barriers can be modified by the hydrogen concentration. The results show the main site for high and low hydrogen density and they show the diffusion coefficient variation by the hydrogen density.

  Info
Periodical
Defect and Diffusion Forum (Volumes 289-292)
Edited by
A. Agüero, J.M. Albella, M.P. Hierro, J. Phillibert and F.J. Pérez Trujillo
Pages
203-209
DOI
10.4028/www.scientific.net/DDF.289-292.203
Citation
J. Sanchez, J. Fullea, C. Andrade, P. de Andres, "Hydrogen Embrittlement of High Strength Steels", Defect and Diffusion Forum, Vols. 289-292, pp. 203-209, 2009
Online since
April 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Ivan G. Ivanov, A. Stelmach, Mats Kleverman, Erik Janzén
Abstract:The one-valley effective-mass approximation is developed for the case of uniaxial crystals with indirect bandgap and applied to the donor...
511
Authors: Rudolf Schneider, Jochen Geerk, Alexander G. Zaitsev, Rolf Heid, K.P. Bohnen, H. von Löhneysen
Abstract:We report on the study of the interband pairing interaction in the two-band superconductor MgB2 by tunneling spectroscopy using thin film...
69
Authors: Fei Yan, Robert P. Devaty, Wolfgang J. Choyke, Tsunenobu Kimoto, Takeshi Ohshima, Gerhard Pensl, Adam Gali
Abstract:In this paper we revisit sharp low temperature luminescence lines (LTPL) previously generated by high dose 1018 to 1020 cm-2 electron beams...
411
Authors: Michael Weidner, Lia Trapaidze, Gerhard Pensl, Sergey A. Reshanov, Adolf Schöner, Hisayoshi Itoh, Takeshi Ohshima, Tsunenobu Kimoto
Abstract:Intrinsic defects in 3C-SiC are generated by implantation of H+- and He+-ions or irra¬diation with high energy electrons. The defect...
439
Authors: Osamu Yoshinari
Abstract:The diffusion coefficients of hydrogen (H) and deuterium (D) in Pd were determined in the frame of a quantum mechanical consideration. The...
295