Version 1
: Received: 19 January 2018 / Approved: 19 January 2018 / Online: 19 January 2018 (10:21:11 CET)
Version 2
: Received: 12 February 2018 / Approved: 12 February 2018 / Online: 12 February 2018 (17:07:45 CET)
Guitton, A.; Kriaa, H.; Bouzy, E.; Guyon, J.; Maloufi, N. A Dislocation-Scale Characterization of the Evolution of Deformation Microstructures around Nanoindentation Imprints in a TiAl Alloy. Materials2018, 11, 305.
Guitton, A.; Kriaa, H.; Bouzy, E.; Guyon, J.; Maloufi, N. A Dislocation-Scale Characterization of the Evolution of Deformation Microstructures around Nanoindentation Imprints in a TiAl Alloy. Materials 2018, 11, 305.
Guitton, A.; Kriaa, H.; Bouzy, E.; Guyon, J.; Maloufi, N. A Dislocation-Scale Characterization of the Evolution of Deformation Microstructures around Nanoindentation Imprints in a TiAl Alloy. Materials2018, 11, 305.
Guitton, A.; Kriaa, H.; Bouzy, E.; Guyon, J.; Maloufi, N. A Dislocation-Scale Characterization of the Evolution of Deformation Microstructures around Nanoindentation Imprints in a TiAl Alloy. Materials 2018, 11, 305.
Abstract
In this work, plastic deformation was locally introduced at room temperature by nanoindentation on a γ-TiAl based alloy. Comprehensive analyzes of microstructures were performed before and after deformation. In particular, the Burgers vectors, the line directions and the mechanical twinning systems were studied via accurate electron channeling contrast imaging. Accommodation of the deformation are reported and a scenario is proposed. All features help to explain the poor ductility of the TiAl based alloys at room temperature.
Keywords
TiAl alloys; plasticity; nanoindentation; ECCI; EBSD
Subject
Chemistry and Materials Science, Materials Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
