Deformation mechanism during nanoindentation creep and corrosion resistance of Zn
International Journal of Structural Integrity
ISSN: 1757-9864
Article publication date: 1 February 2016
Abstract
Purpose
The study of nanoindentation as a reliable method to extract creep properties as well as for fundamental understanding of deformation mechanisms at small length scales is an open interesting field. The observed creep behavior is attributed to time-dependent plastic deformation based on loading rates. There is a lot of work in the field of nanoindentation in order to understand the dynamic effects on nanomechanical properties. The paper aims to discuss these issues.
Design/methodology/approach
The deformation mechanism is investigated under two experimental approaches (high and low loading rates, respectively) during nanoindentation. The effect of loading rate in the nanomechanical properties, during nanoindentation creep of zinc layer on hot dip galvanized (HDG) steel, is discussed through nanoindentation.
Findings
Analysis of this research effort is emphasized on nanoindentation stress exponent, a critical parameter for the life time and reliability of nano/micro-materials and systems. The corrosion resistance was studied by electrochemical impedance spectroscopy (EIS) and localized EIS.
Originality/value
The study of nanoindentation as a reliable method to extract creep properties as well as for fundamental understanding of deformation mechanisms at small length scales is an open interesting field. The observed creep behavior is attributed to time-dependent plastic deformation based on loading rates. The deformation mechanism is investigated under two experimental approaches (high and low loading rates, respectively) during nanoindentation. The effect of loading rate in the nanomechanical properties, during nanoindentation creep of zinc layer on HDGsteel, is discussed through nanoindentation. Analysis of this research effort is emphasized on nanoindentation stress exponent, a critical parameter for the life time and reliability of nano/micro- materials and systems. The corrosion resistance was studied by EIS and localized EIS.
Keywords
Citation
Dragatogiannis, D.A., Koumoulos, E.P., Kartsonakis, I.A. and Charitidis, C.A. (2016), "Deformation mechanism during nanoindentation creep and corrosion resistance of Zn", International Journal of Structural Integrity, Vol. 7 No. 1, pp. 47-69. https://doi.org/10.1108/IJSI-07-2014-0034
Publisher
:Emerald Group Publishing Limited
Copyright © 2016, Emerald Group Publishing Limited