Elastic constants of single crystal Cr3Si and CrCr3Si lamellar eutectic composites: a comparison of ultrasonic and nanoindentation measurements

abstract

• The elastic constants of high quality single crystals of Cr3Si (cubic A15 crystal structure) grown in an optical floating zone furnace were measured by ultrasonic methods and compared to the indentation modulus determined by nanoindentation techniques. The measured indentation moduli are within 5% of the Vlassak-Nix predictions for elastically anisotropic materials provided a correction is made for the triangular cross-section of the Berkovich indenter. The indentation moduli of individual lamellae in a directionally solidified Cr-Cr3Si lamellar eutectic composite were also measured to examine how well the procedures apply to small microstructural features. 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

authors

• Pharr, George

published proceedings

• Scripta Materialia

author list (cited authors)

• Bei, H., George, E. P., & Pharr, G. M.

citation count

• 37

complete list of authors

• Bei, H||George, EP||Pharr, GM

publication date

• November 2004

publisher

• Elsevier  Publisher

published in

• Scripta Materialia  Journal

Digital Object Identifier (DOI)

• 10.1016/j.scriptamat.2004.07.001

start page

• 875

end page

• 879

volume

• 51

issue

• 9

URL

• http://dx.doi.org/10.1016/j.scriptamat.2004.07.001