YOUNGS MODULUS OF NANOCRYSTALLINE FE MEASURED BY NANOINDENTATION

Authors
FOUGERE GE RIESTER L FERBER M WEERTMAN JR SIEGEL RW
Citation
Ge. Fougere et al., YOUNGS MODULUS OF NANOCRYSTALLINE FE MEASURED BY NANOINDENTATION, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 204(1-2), 1995, pp. 1-6
Citations number
27
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
204
Issue
1-2
Year of publication
1995
Pages
1 - 6
Database
ISI
SICI code
0921-5093(1995)204:1-2<1:YMONFM>2.0.ZU;2-#
Abstract
Nanoindentation techniques were used to measure Young's modulus for na nocrystalline Fe samples produced by inert-gas condensation and warm c onsolidation. The samples had grain sizes of 4-20 nm and residual poro sity of 2-30% calculated relative to conventional Fe. Values of Young' s modulus for the nanocrystalline Fe are reduced relative to that of c onventional, fully dense Fe. A review of Young's modulus for other nan ocrystalline materials showed similar trends. Published results for po rous conventional Fe showed similar reductions in Young's modulus for samples with comparable porosity levels. The observed reductions in Yo ung's modulus for both the nanocrystalline and the conventional porous Fe can be described adequately by several theories utilizing spheroid al porosity.