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Micro-Indentation using Strain Rate Sensitivity to Examine Deformation of Polymeric and Metallic Surface Layers

Published online by Cambridge University Press:  15 February 2011

W. R. Newson ,
B. J. Diak  and
S. Saimoto
W. R. Newson
Affiliation:
Dept. of Materials and Metallurgical Engineering, Queen's University, Kingston, Ontario, Canada, K7L 3N6
B. J. Diak
Affiliation:
Dept. of Materials and Metallurgical Engineering, Queen's University, Kingston, Ontario, Canada, K7L 3N6
S. Saimoto
Affiliation:
Dept. of Materials and Metallurgical Engineering, Queen's University, Kingston, Ontario, Canada, K7L 3N6
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Abstract

A sensitive method to characterize the inelastic deformation of solids is to measure the thermodynamic response of the deforming volume by applying an inelastic strain rate change. Using the step ramp technique on a displacement controlled micro-indentor with Berkovich tip, the apparent activation volumes were determined for linear low density polyethylene, and eutectic Pb-Sn solder for depths less than 10 μm. The results show that the activation volume is a unique measure of a given microstructure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 436: Symposium CC – Thin Films Stresses and Mechanical Properties VI , 1996 , 359
Copyright
Copyright © Materials Research Society 1997

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