Cavity nucleation and growth in superplasticity

Chokshi, Atul H (2005) Cavity nucleation and growth in superplasticity. In: Materials Science and Engineering: A, 410 . pp. 95-99.

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Abstract

Most superplastic materials fail by the nucleation, growth and interlinkage of cavities. Professor Langdon was amongst the first to recognize the significance of concurrent cavitation in superplasticity. This report examines the relaxation of stress concentrations caused by grain boundary sliding, and the nucleation of cavities at triple points, which is relevant for many superplastic ceramics as well as some Mg alloys. It is shown that cavity growth is dominated by plastic deformation. Data for superplastic zirconia are utilized for purposes of illustration. Experimental conditions to limit concurrent cavitation are also identified.

Item Type:	Journal Article
Publication:	Materials Science and Engineering: A
Publisher:	Elsevier Science BV
Additional Information:	Copyright for this article belongs to Elsevier.
Keywords:	Superplastic; Zirconia; Mg alloys; Cavity; Nucleation
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	18 Jan 2006
Last Modified:	19 Sep 2010 04:22
URI:	http://eprints.iisc.ac.in/id/eprint/5148

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