Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 571, Issue -, Pages 49-56Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2013.01.078
Keywords
Titanium aluminide alloys; Electron channelling contrast imaging; Transmission electron microscopy; EBSD
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Different methods of scanning and transmission electron microscopy (SEM, TEM) were applied on a gamma-TiAl alloy TNB-V5 after a thermo-mechanical fatigue test. Electron channelling contrast imaging (ECCI) and electron backscattered diffraction were carried out on bulk specimen. In addition, ECCI and scanning transmission electron microscopy in the SEM were carried out on a TEM foil in the electron opaque and the electron transparent region, respectively. The investigations were completed by transmission electron microscopy in the form of standard bright field imaging as well as by taking corresponding diffraction patterns. The results demonstrate in an impressive way that the ECCI technique applied in scanning electron microscopy can successfully supplement or in some cases replace imaging of dislocation arrangements in TEM. (C) 2013 Elsevier B.V. All rights reserved.
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