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The influence of grain size on cavitation in superplasticity

Chokshi, Atul H (1996) The influence of grain size on cavitation in superplasticity. In: International Symposium Towards Innovation in Superplasticity, 23-24 July, Kyoto, Japan, Vol.233-234, 89-108.

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Abstract

Superplasticity is observed in conventional metallic alloys, with a grain size of $\sim10$ to 15 μm , at a strain rate in the vicinity of $\sim10^{-4} s^{-1}$. In order to enhance the commercial viability of this process, it is necessary to increase the optimum strain rate for superplasticity; one attractive means to achieving this objective is to reduce the grain size to the submicrometer and nanocrystalline ranges. Failure in many superplastic alloys occurs by the nucleation, growth and interlinkage of cavities. All of these processes may be influenced significantly by the grain size. This paper explores the influence of grain size on concurrent cavitation by developing a suitable theoretical framework and by examining some experimental data

Item Type: Conference Paper
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 28 Mar 2007
Last Modified: 27 Aug 2008 12:39
URI: http://eprints.iisc.ernet.in/id/eprint/9953

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