Approaching theoretical strengths by synergistic internal and external size refinement

Warthi, Nilesh and Ghosh, Pradipta and Chokshi, Atul H (2013) Approaching theoretical strengths by synergistic internal and external size refinement. In: SCRIPTA MATERIALIA, 68 (5). pp. 225-228.

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Abstract

Refinement of the internal grain size leads to strengthening by retarding dislocation motion. There have also been recent reports that a reduction in external diameter enhances the strength of single crystal pillars. Here we show, in a hitherto unexplored domain, a synergistic increase in strength by a combined reduction in internal (0.5 mu m) and external (20-50 mu m) dimensions, with strengths at failure approaching the theoretical value. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	SCRIPTA MATERIALIA
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Additional Information:	Copyright for this article belongs to PERGAMON-ELSEVIER SCIENCE LTD, ENGLAND
Keywords:	Grain size;Single crystal;Strength;Failure;Dislocations
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	21 Feb 2013 10:04
Last Modified:	21 Feb 2013 10:04
URI:	http://eprints.iisc.ac.in/id/eprint/45838

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