Cooperative Grain Boundary Sliding at Room Temperature of a Zn-20.2%Al-1.8%Cu Superplastic Alloy
| Autor: | Gabriel Torres-Villaseñor, Juan Daniel Muñoz-Andrade, A. Mendoza-Allende, J.A. Montemayor-Aldrete |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Mesoscopic physics
Materials science Mechanical Engineering Metallurgy Alloy Coordinate system Superplasticity Deformation (meteorology) engineering.material Condensed Matter Physics Distribution function Mechanics of Materials Ultimate tensile strength engineering General Materials Science Composite material Grain Boundary Sliding |
| Zdroj: | Materials Science Forum. :551-558 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.357-359.551 |
| Popis: | By applying a new technique [1-2] which provides a mesoscopic coordinate system inscribed on the surface of a tensile specimen, with 371 pm gage length for a Zn-20.2%Al-1.8%Cu superplastic alloy deformed at room temperature it is possible to show that: Deformation of the sample it is homogeneous at macroscopic level, but inhomogeneous at mesoscopical level. The inhomogeneity is ascribed to the sliding of grain blocks. For 28.5% of deformation the distribution function for the block sizes is described by: N(x) = 1.37 x 3 exp(-3x/12.2 μm), where, N(x) is the number of blocks of size x, inside an area of about 172 X 244 (μm) 2 . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|