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

Ulrich Froebel

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

Paper Titles

Qualification of an Investment Casting Process for Production of Titanium Aluminide Components for Aerospace and Automotive Applications
p.1275

Fabrication and Processing of Gamma Titanium Aluminides - A Review
p.1281

Recrystallization Textures in Heavily Cold-Rolled Ni₃Al Based Single Crystals
p.1288

Comparison of Different Fluorine Treatments for the Protection of TiAl-Alloys Against High Temperature Oxidation
p.1294

Hot-Workability of Gamma-Based TiAl Alloys during Severe Deformation
p.1300

Ti-Al-Cr Based Coatings for High Temperature Oxidation Protection of γ-TiAl
p.1306

The Effect of Impact on the TiAl Alloy TNBV3B Produced on Three Different Processing Routes
p.1312

Change in Microstructure by Heat-Treatment and Corresponding Deformation Behavior in Ni₃V Single Crystals
p.1318

Low Cycle Fatigue and Cyclic Deformation of TiAl Alloys
p.1324

HomeMaterials Science ForumMaterials Science Forum Vols. 638-642Hot-Workability of Gamma-Based TiAl Alloys during...

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

Abstract:

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.