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Microstructure and reaction mechanisms at γ-TiAl brazed interfaces

Published online by Cambridge University Press:  21 August 2009

A. Guedes ,
A. M. P. Pinto ,
E. W. Sequeiros ,
M. F. Vieira  and
F. Viana
A. Guedes
Affiliation:
CT2M, Centre for Mechanical and Materials Technologies, University of Minho, Campus de Azurém, 4800-058 Guimarãs, Portugal
A. M. P. Pinto
Affiliation:
CT2M, Centre for Mechanical and Materials Technologies, University of Minho, Campus de Azurém, 4800-058 Guimarãs, Portugal
E. W. Sequeiros
Affiliation:
CEMUC, Department of Metallurgical and Materials Engineering, University of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
M. F. Vieira
Affiliation:
CEMUC, Department of Metallurgical and Materials Engineering, University of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
F. Viana
Affiliation:
CEMUC, Department of Metallurgical and Materials Engineering, University of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal

Abstract

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Titanium aluminide alloys based on the γ-TiAl intermetallic compound are emerging as potential materials for high performance applications on aircraft engines components, aerospace vehicles and automotive engines, owing to their low density, high specific stiffness, excellent strength retention at high temperature and good creep and oxidation resistance. The development of adequate techniques to join γ-TiAl alloys, either to themselves or to other materials, is a key issue regarding the effective use of these alloys. Understanding of the reaction mechanisms that promote bonding is mandatory when optimization of the joining procedure is envisaged.

Type
Materials Sciences
Information
Microscopy and Microanalysis , Volume 15 , Supplement S3 , July 2009 , pp. 67 - 68
Copyright
Copyright © Microscopy Society of America 2009