Hot-Workability of Gamma-Based TiAl Alloys during Severe Deformation

Abstract:

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Forged and extruded TiAl products suffer from structural and chemical inhomogeneities that reduce the reliability of components. In an attempt to improve the homogeneity of the material, the feasibility of cyclic axial deformation and cyclic torsional deformation superimposed with compression, where much higher strains can be imparted into the material than during forging and extrusion, were investigated. Accordingly, during torsion superimposed with compression pronounced shear localization and cracking occurs. These difficulties can largely be overcome by cyclic axial deformation.

Info:

Periodical:

Materials Science Forum (Volumes 638-642)

Main Theme:

Edited by:

T. Chandra, N. Wanderka, W. Reimers , M. Ionescu

Pages:

1300-1305

DOI:

10.4028/www.scientific.net/MSF.638-642.1300

Citation:

U. Froebel "Hot-Workability of Gamma-Based TiAl Alloys during Severe Deformation", Materials Science Forum, Vols. 638-642, pp. 1300-1305, 2010

Online since:

January 2010

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$35.00

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