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Erschienen in:
1992 | OriginalPaper | Buchkapitel
Structural Superplasticity
verfasst von : Professor Oscar A. Kaibyshev
Erschienen in: Superplasticity of Alloys, Intermetallides and Ceramics
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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There are three conditions required for transforming a material into a superplastic (SP) state, viz., the presence of a stable microcrystalline structure (d < 10–15 μm), a deformation temperature exceeding 0.4 T m , and a specific range of strain rates (usually from 10−4 to 10−1 s−1). In virtually all alloys the development of the SP effect has common features because of which it can be treated as a peculiar type of plastic deformation that is characterized by the specific phenomenology. Recent studies show that typical features of superplasticity can be observed not only in metals, but in intermetallic compounds and ceramics as well.