Superplasticity of materials as effect of self-organizing of grain-boundary processes

Journal Article · Fri Apr 09 04:00:00 EDT 1999 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(98)00490-4· OSTI ID:352434

Emaletdinov, A K ^[1]

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1. Technological Inst., Ufa (Russian Federation)

For an explanation of superplastic deformation of metals many models were proposed allowing an explanation of a number of macroscopic characteristics of structural superplasticity (SP), such as dependence of stress on average size of grain, factors of high-speed sensitivity, high-speed interval of display of effect and some others. At the same time some experimental phenomenona of SP were studied, for example: cooperative grain-boundary sliding (CGBS), scale effect, effect of running neck. In the given work based on the physical model offered in a cited work, the synergetic model of effect of superplasticity is advanced and specific characteristic laws of SP are discussed.

• OSTI ID: 352434
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 9 Vol. 40; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
CREEP
CRYSTAL MODELS
DISLOCATIONS
GRAIN BOUNDARIES
METALS
PLASTICITY
STRESSES