Overview on superplasticity research on small-grained materials

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

19 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)13-22
Journal / PublicationMaterials Science Forum
Volume170-172
Publication statusPublished - 1994
Externally publishedYes

Conference

TitleProceedings of the 1994 International Conference on Superplasticity in Advanced Materials (ICSAM-94)
CityMoscow, Russia
Period24 - 26 May 1994

Abstract

Superplasticity is generally associated with fine grains, grain boundary sliding, and high tensile ductility at elevated temperature. This paper reviews some of the recent important findings in fine-grained superplasticity, including the areas of superplastic ceramics and of high-strain-rate superplasticity (HSRS). Deformation mechanism maps are shown to be powerful tools for predicting the conditions where HSRS can be expected. Ultrafine grained materials, processed economically, remain an important objective in achieving HSRS. Threshold stresses, observed in fine-grained superplastic materials, are shown to be functions of temperature and grain size but their origin, however, remains obscure. Quasi-superplastic materials, with a strain-rate-sensitivity exponent of m = 0.33, are shown to have high elongations, and have considerable promise for net-shape isothermal forming of sheet and bulk components.

Bibliographic Note

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Citation Format(s)

Overview on superplasticity research on small-grained materials. / Sherby, O. D.; Nieh, T. G.; Wadsworth, J.
In: Materials Science Forum, Vol. 170-172, 1994, p. 13-22.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review