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RESEARCH PAPERS

General Microhardness Indentation Theory for Multilayer Contacts

[+] Author and Article Information
Peter A. Engel, Qian Yang

Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13902

J. Tribol 119(1), 1-7 (Jan 01, 1997) (7 pages) doi:10.1115/1.2832459 History: Received June 16, 1994; Revised December 21, 1994; Online January 24, 2008

Abstract

A refined method for interpreting the Vickers composite microhardness measurement for multilayer materials having layers of arbitrary plating thickness is first presented. The position of an “effective substrate” is found using the concept of the “plastic boundary,” and the depth-wise deformation of each layer is considered in a double-iterative procedure which converges fast. This computational method is then extended from pyramidal indenters to conical and spherical indenters (e.g., Meyer’s). For its confirmation, experimental investigations are carried out for two configurations of Cu/Ni/Au sandwiches, using different diameter spherical indenters and spherical tipped cones, through and well above the microhardness load range. The general rules for composite action are established.

Copyright © 1997 by The American Society of Mechanical Engineers
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