Compressive strengths of molybdenum alloy micro-pillars prepared using a new technique 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

altmetric score

  • 3

author list (cited authors)

  • Bei, H., Shim, S., George, E. P., Miller, M. K., Herbert, E. G., & Pharr, G. M.

citation count

  • 247

complete list of authors

  • Bei, H||Shim, S||George, EP||Miller, MK||Herbert, EG||Pharr, GM

publication date

  • September 2007