Photoemission electron microscopy of superplastic deformation processes

The photoemission electron microscope and the different types of specimen stages available are briefly described. The results of high-temperature straining experiments on two superplastic alloys, aluminum alloy 7475 and titanium alloy Ti-6% Al-4% V, are presented and compared with previous in situ e...

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Bibliographic Details
Published in:Metallography 1987-05, Vol.20 (2), p.199-212
Main Authors: Hammond, C., Nichells, A., Paton, N.E.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Deformation and plasticity (including yield, ductility, and superplasticity)
Elasticity. Plasticity
Exact sciences and technology
Materials science
Mechanical and acoustical properties of condensed matter
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Mechanical properties of solids
Metals, semimetals and alloys
Metals. Metallurgy
Physics
Specific materials
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Description
Summary:The photoemission electron microscope and the different types of specimen stages available are briefly described. The results of high-temperature straining experiments on two superplastic alloys, aluminum alloy 7475 and titanium alloy Ti-6% Al-4% V, are presented and compared with previous in situ experiments in the scanning electron microscope. The present results corroborate previous observations and also suggest that, in two-phase alloys, the softer phase deforms at higher strain rates than the harder phase.
ISSN:0026-0800
DOI:10.1016/0026-0800(87)90029-2