Probing the Strain Hardening Response of Small Wear Volumes with Nanoindentation

Autor: David F. Bahr, William W Gerberich, Marian S. Kennedy, Somuri V. Prasad, Megan J. Cordill, William M. Mook, J. M. Jungk, Neville R. Moody
Rok vydání: 2011
Předmět:
Zdroj: Metallurgical and Materials Transactions A. 42:2226-2232
ISSN: 1543-1940
1073-5623
DOI: 10.1007/s11661-011-0629-8
Popis: In order to characterize the wear and related mechanical behavior of materials from small volumes, a program employing nanoscratch and nanoindentation was performed. Nanoscratch techniques were used to generate square wear patterns with varying degrees of shear strain followed by nanoindentation tests to measure the mechanical properties within the deformation area. Results show a systematic increase in hardness with both the applied load and number of nanoscratch passes. An analytical approach was used to determine the stress-strain response and strain hardening behavior of electroformed nickel. The strain hardening exponent determined from this method follows the work hardening behavior established from previous tensile tests, supporting the use of a nanomechanics-based approach for evaluating the mechanical properties of wear-tested material.
Databáze: OpenAIRE
Externí odkaz: