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Influence of Processing on the High Strain Rate Behavior of Refractory Metals - A Review

Ravichandran, G. (1994) Influence of Processing on the High Strain Rate Behavior of Refractory Metals - A Review. Materials and Manufacturing Processes, 9 (6). pp. 1031-1046. ISSN 1042-6914.

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The high strain rate behavior of structural refractory metals such as tungsten, tantalum, hafnium and their alloys is reviewed. Tungsten, tantalum and their alloys exhibit significant rate sensitivity where as hafnium exhibits little or no rate sensitivity. Single crystal and textured tungsten in <100> orientation are found to exhibit excellent ductility whereas in <110> orientation they fail in a typically brittle manner. Tungsten heavy alloys (WHA) show moderate ductility and are also found to exhibit strain localization at high strain rates. Tantalum and their alloys exhibit moderate to excellent ductility but their deformation is highly dependent on initial processing texture. Hafnium exhibits excellent ductility and is prone to localization in a wide range of strain rates. The macroscopic high strain rate behavior of refractory metals is explained in terms of the processing conditions to which they are subjected and the resulting microstructure.

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Ravichandran, G.0000-0002-2912-0001
Additional Information:© 1994 by Marcel Dekker, Inc. Published online: 25 Apr 2007. The author gratefully acknowledges the support through a Presidential Young Investigator award from the National Science Foundation, grant No. MSS-9183546. The author thanks Professors K. S. Vecchio and G. Subhash and Dr. M. Zhou for many valuable discussions and also for sharing their experimental data. The author also wishes to thank Drs. R. J. Dowding, J. Stiglich and T. S. Sudarshan for their continued interest in this subject and for providing the stimulus to prepare this article.
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Issue or Number:6
Record Number:CaltechAUTHORS:20150225-163250712
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55228
Deposited By: Cheryl Gause
Deposited On:02 Mar 2015 23:59
Last Modified:09 Mar 2020 13:19

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