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Transmission Electron Microscopy Characterization of Thermomechanically Treated Al3Ti–(8, 10, 15)% Cr Intermetallics

Published online by Cambridge University Press:  06 August 2013

Ok Jun Jang ,
Cheol-Woong Yang  and
Dong Bok Lee
Ok Jun Jang
Affiliation:
School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 440-746, SouthKorea
Cheol-Woong Yang
Affiliation:
School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 440-746, SouthKorea
Dong Bok Lee*
Affiliation:
School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 440-746, SouthKorea
*
*Corresponding author. E-mail: dlee@skku.ac.kr
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Abstract

The ordered L12-type Al3Ti–(8, 10, 15)% Cr intermetallic compounds, namely, Al67Ti25Cr8, Al66Ti24Cr10, and Al59Ti26Cr15, were prepared by induction melting followed by thermomechanical treatment. Their microstructure, compositional variation, and crystal structure were characterized using X-ray diffraction, optical microscopy, and scanning and transmission electron microscopy equipped with energy-dispersive spectroscopy. The Al67Ti25Cr8 alloy consisted of the L12-Al3Ti matrix and precipitates of α2-Ti3Al, D022-Al3Ti, and γ-TiAl. The Al66Ti24Cr10 and Al59Ti26Cr15 alloys consisted of the L12-Al3Ti matrix and grains of α-TiAl and β-Cr.

Keywords

titanium trialuminideschromiumphase diagramintermetallicstransmission electron microscopyenergy-dispersive spectrometry
Type
Research Article
Information
Microscopy and Microanalysis , Volume 19 , Supplement S5: IUMAS , August 2013 , pp. 89 - 94
Copyright
Copyright © Microscopy Society of America 2013 

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