Compressive strengths of molybdenum alloy micro-pillars prepared using a new technique Academic Article uri icon

abstract

  • Single-crystal micro-pillars of a molybdenum alloy were prepared by a new technique that involves chemically etching away the matrix of a directionally solidified NiAl-Mo eutectic. The square cross-section pillars had edge dimensions ranging from 360 to 1000 nm. When tested in compression with a nanoindentation system, the pillars all yielded, regardless of size, at a critical resolved shear stress of 4.3 GPa, or G/26, where G is the shear modulus. This shear yield strength is in the range expected for the theoretical strength, G/30 to G/10. 2007 Acta Materialia Inc.

published proceedings

  • Scripta Materialia

author list (cited authors)

  • BEI, H., SHIM, S., GEORGE, E., MILLER, M., HERBERT, E., & PHARR, G.

citation count

  • 244

complete list of authors

  • BEI, H||SHIM, S||GEORGE, E||MILLER, M||HERBERT, E||PHARR, G

publication date

  • September 2007