Paper Title:
Lattice Misfit of High Refractory Ruthenium Containing Nickel-Base Superalloys
  Abstract

The influence of Ru, Co, Mo and W on the lattice misfit of eight highly alloyed Re containing single crystal nickel-base superalloys was investigated. High resolution X-ray diffraction (XRD) was used to relate the elemental partitioning behavior and the Vegard coefficients of the elements under investigation to the measured lattice parameter of the  and  phase. The residual chemical segregation and especially the coherency stress-induced tetragonal distortion of the  matrix lattice in the high Mo containing alloys results in the observation of two different lattice parameters for the  matrix phase. This leads to three overlapping, but clearly distinguishable {002} X-ray reflections.

  Info
Periodical
Edited by
M. Heilmaier
Pages
60-65
DOI
10.4028/www.scientific.net/AMR.278.60
Citation
S. Neumeier, J. Ang, R.A. Hobbs, C. M.F. Rae, H. J. Stone, "Lattice Misfit of High Refractory Ruthenium Containing Nickel-Base Superalloys", Advanced Materials Research, Vol. 278, pp. 60-65, 2011
Online since
July 2011
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