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Herring‐Nabarro Creep Studies on the Self‐Diffusion of Iron in the Presence of Solutes
Author(s) -
Hondros E. D.
Publication year - 1967
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19670210138
Subject(s) - creep , herring , diffusion , materials science , thermal diffusivity , self diffusion , thermodynamics , diffusion creep , metallurgy , microstructure , physics , fish <actinopterygii> , computer science , fishery , biology , self service , computer security , grain boundary
Creep studies have been conducted on pure iron and iron alloys at high temperatures and in the stress range where the Herring‐Nabarro diffusion creep mechanism pertains. Results are presented which show that the diffusion coefficient of pure iron in the δ‐phase agrees within experimental error with the radio‐tracer value and that nitrogen and phosphorus in dilute solid solution enhance the self‐diffusivity of pure iron. The self‐diffusion of iron in the presence of 3.5% Si is expressed by\documentclass{article}\pagestyle{empty}\begin{document}$$ D = (4.3 \pm 2)\exp \left({\frac{{ - 56000 \pm 5000}}{{RT}}} \right)\,{\rm cm}^{\rm 2} {\rm s}^{{\rm - 1}} $$\end{document} .