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Diffusional Creep: Stresses and Strain Rates in Thin Films and Multilayers

Published online by Cambridge University Press:  31 January 2011

D. Josell ,
T. P. Weihs  and
H. Gao
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Abstract

In this article, we discuss creep deformation as it relates to thin films and multilayer foils. We begin by reviewing experimental techniques for studying creep deformation in thin-film geometries, listing the pros and cons of each; then we discuss the use of deformation-mechanism maps for recording and understanding observed creep behavior. We include a number of cautionary remarks regarding the impact of microstructural stability, zero-creep stresses, and transient-creep strains on stress–strain rate relationships, and we finish by reviewing the current state of knowledge for creep deformation in thin films. This includes both thin films that are heated on substrates as well as multilayer films that are tested as freestanding foils.

Keywords

diffusional creepmechanical propertiesthin films.
Type
Research Article
Information
MRS Bulletin , Volume 27 , Issue 1: Mechanical Properties in Small Dimensions , January 2002 , pp. 39 - 44
Copyright
Copyright © Materials Research Society 2002

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