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http://dx.doi.org/10.5228/KSPP.2005.14.8.696

The Influence of Annealing Temperature on Mechanical Properties and Friction Coefficient of Coating Layer in Galvannealed Sheet Steel  

Jeon J.S. (부산대학교 정밀기계공학과)
Lee J. M. (부산대학교 정밀기계공학과)
Kim D. J. (진주국제대학교 자동차공학부)
Kang Y.S. (POSCO 자동차강재 가공연구센터)
Kim B. M. (POSCO 자동차강재 가공연구센터)
Publication Information
Transactions of Materials Processing / v.14, no.8, 2005 , pp. 696-703 More about this Journal
Abstract
In the modern days, a galvannealed sheet steel (GA) instead of a cold rolled steel sheet has been widely used as an alternative to extend the life of automotive body. Accordingly, the mechanical properties of GA for automobiles were taken into account and studied by examining their variation with annealing temperature. To clarify the effect of surface features on the mechanical and frictional properties of GA, the several tests such as nanoindentation, Vickers hardness and nano scratch test were executed. The frictional characteristics of coating layers of GA were examined through nano scratch test in this study. The friction coefficient of coating layers on the surface was obtained from the nano scratch. The variation of friction coefficient versus velocity and pressure was taken into consideration in this paper. Hardness and elastic modulus of coating layer were increased as increasing annealing temperature.
Keywords
Nanoindentation; Coating Layer; Mechanical Properties; frictional Coefficient; Galvannealed Sheet Steel;
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Times Cited By KSCI : 1  (Citation Analysis)
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