Paper Title:
In Situ Deformation at 850°C of Standard and Rafted Microstructures of Nickel Base Superalloys
  Abstract

An in situ study of the plastic deformation of <001> single crystals of an industrial superalloy has been performed at 850 °C in a TEM to observe directly the micromechanisms which control the deformation under the actual temperature and stress conditions experienced by this material in aeroengines. A comparison between the creation and propagation modes of moving dislocations in the standard microstructure after annealing and the rafted microstructure after 20 h of creep at 1050°C evidence the important role of the width of the γ channels as well as the strength of the γ/γ’ interface in controlling the shearing events of γ’ channels.

  Info
Periodical
Edited by
H. Balmori-Ramírez, M. Brito, J.G. Cabañas-Moreno, H.A. Calderón-Benavides, K. Ishizaki and A. Salinas-Rodríguez
Pages
57-62
DOI
10.4028/www.scientific.net/MSF.509.57
Citation
N. Clément, M. Benyoucef, M. Legros, P. Caron, A. Coujou, "In Situ Deformation at 850°C of Standard and Rafted Microstructures of Nickel Base Superalloys", Materials Science Forum, Vol. 509, pp. 57-62, 2006
Online since
March 2006
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