SUPERPLASTICITY: CHARACTERISTICS, ORIGIN, AND UTILIZATION | ||
| The International Conference on Applied Mechanics and Mechanical Engineering | ||
| Article 36, Volume 15, 15th International Conference on Applied Mechanics and Mechanical Engineering., May 2012, Pages 1-1 PDF (49.07 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/amme.2012.36941 | ||
| Author | ||
| Farghalli A. Mohamed | ||
| Department of Chemical Engineering and Materials Science Department of Mechanical and Aerospace Engineering Department of Civil and Environmental Engineering University of California, Irvine Irvine, CA 92697, USA | ||
| Abstract | ||
| SUMMARY Micrograin Superplasticity refers to the ability of fine-grained materials (1μm < d < 10 μm, where d is the grain size) to exhibit extensive neck-free elongations during deformation at elevated temperatures. Over the past three decades, good progress has been made in rationalizing this phenomenon. This presentation provides a brief review on this progress in several areas that are related to: (a) the mechanical characteristics of micrograin superplasticity and their origin, (b) the effect of impurity content and type on deformation behavior, boundary sliding, and cavitation during superplastic deformation, (c) the formation of cavity stringers, (d) dislocation activities and role during superplastic flow, and (e) the utilization of superplasticity | ||
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