SYMPOSIA PAPER Published: 01 January 1985
STP32956S

Use of the Indentation Size Effect on Microhardness for Materials Characterization

Source

This paper describes several different physicochemical mechanisms that produce an indentation size effect on microhardness. The mechanisms are illustrated with reference to published data. A simple quantitative model for surface layer effects is presented, and its relevance to chemomechanical effects on ceramics is discussed.

A well-behaved empirical function describing some indentation size effects is introduced, and its advantages are discussed. It is used in a new method of graphically presenting microhardness data which is presented here for the first time. This “error-ellipsoid” diagram not only is visually compact and statistically rigorous but is based on a new physically meaningful parameter, the “10-μm hardness.”

Author Information

Sargent, PM
University of Cambridge, Cambridge, England
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Details
Developed by Committee: E04
Pages: 160–174
DOI: 10.1520/STP32956S
ISBN-EB: 978-0-8031-4951-9
ISBN-13: 978-0-8031-0441-9