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Licensed Unlicensed Requires Authentication Published by De Gruyter January 8, 2022

Extracting hardness and Young’s modulus from load – displacement curves

S. J. Bull

Abstract

Conventional methods for analysing nanoindentation load–displacement curves to obtain mechanical properties, such as Young’s modulus or hardness, require careful calibration of the indenter tip end shape and can overestimate hardness in cases where significant pile-up occurs. This paper introduces alternative methods for analysis, which are not so susceptible to such problems. Results from TiN and nickel suggest that the slopes method recently introduced by Oliver is an improvement on the other existing analysis methods.


Prof. Steve Bull Department of Mechanical, Materials and Manufacturing Engineering University of Newcastle Herschel Building Newcastle upon Tyne, NE1 7RU, U.K. Tel.: +44 191 222 7913 Fax: +44 191 222 8563

  1. The author would like to thank Warren Oliver for provision of a copy of his conference presentation which inspired this work, and Ude Hangen at Surface, Hückelhoven, for the invitation to present it.

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Received: 2001-03-28
Published Online: 2022-01-08

© 2002 Carl Hanser Verlag, München