Stress dependence of tensile creep rate in carbons and graphites

ABSTRACT DESPITE the importance of carbons and graphites for very high temperature structural applications, very little is understood about the mechanisms of deformation and failure in these

materials1. In principle, the stress dependence of the creep rate offers a simple method to obtain information on which of several possible deformation mechanisms operate at high

temperatures. Using the empirical relationship ε̇ = _Aσ__n_, where ε̇ is the creep rate, σ is the stress and _A_ is a proportionality constant, the stress exponent _n_ is expected to equal

one for Nabarro–Herring diffusion mass-transport creep; a much larger value of _n_, typically between 4 and 5, is expected for an edge dislocation climb mechanism such as occurs in many

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support SIMILAR CONTENT BEING VIEWED BY OTHERS MATERIAL PROPERTIES AND STRUCTURE OF NATURAL GRAPHITE SHEET Article Open access 29 October 2020 INSIGHTS INTO THE ANOMALOUS HARDNESS OF THE

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Open access 23 April 2021 REFERENCES * Fischbach, D. B., and Kotlensky, W. V., _Electrochem. Tech._, 5, 207 (1967). Google Scholar  * Green, W. V., _Carbon_, 4, 81 (1966). Article  CAS 

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Author notes * D. B. FISCHBACH Present address: Department of Metallurgy, University College of Swansea, AUTHORS AND AFFILIATIONS * Jet Propulsion Laboratory, California Institute of

Technology, Pasadena, California D. B. FISCHBACH Authors * D. B. FISCHBACH View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS

Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE FISCHBACH, D. Stress Dependence of Tensile Creep Rate in Carbons and Graphites. _Nature_ 217, 840–841 (1968).

https://doi.org/10.1038/217840a0 Download citation * Received: 29 November 1967 * Issue Date: 02 March 1968 * DOI: https://doi.org/10.1038/217840a0 SHARE THIS ARTICLE Anyone you share the

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