Paper Title:
Some Deformation Micromechanisms in Ni-Based Superalloys Evidenced Using TEM In Situ Experiments
  Abstract

In situ straining of microsamples have been carried out at different temperatures in a transmission electron microscope (TEM) to provide information about the elementary micromechanisms, which control the deformation in Ni-based superalloys at the nano and microscopic scales. The obstacles to the propagation of the dislocations have been identified and quantified when possible. The strengthening effect in the -matrix channels and the shearing of ' precipitates have been chosen to illustrate some results deduced from moving dislocation analysis. A quantitative evaluation of the stresses acting on dislocations has been performed. The shearing process of the ' precipitates at 850°C has been precisely analysed.

  Info
Periodical
Edited by
M. Heilmaier
Pages
90-95
DOI
10.4028/www.scientific.net/AMR.278.90
Citation
F. Pettinari-Sturmel, M. Benyoucef, J. Douin, P. Caron, D. Locq, N. Clément, A. Coujou, "Some Deformation Micromechanisms in Ni-Based Superalloys Evidenced Using TEM In Situ Experiments", Advanced Materials Research, Vol. 278, pp. 90-95, 2011
Online since
July 2011
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