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Processing and Deformation Behavior of Gamma TiAl Alloys with Fine-Grained Equiaxed Microstructures |
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| Authors: | GA Salishchev ON Senkov RM Imayev VM Imayev MR Shagiev AV Kuznetsov F Appel M Oehring OA Kaibyshev FH Froes |
| Affiliation: | (1) Institute for Metals Superplasticity Problems, Russian Academy of Science, Ufa, 450001, Russia;(2) Institute for Materials and Advanced Processes, University of Idaho, Moscow, Idaho 83844-3026, USA;(3) Institute for Materials Research, GKSS Research Center, D-21502 Geesthacht, Germany;(4) Institute for Materials and Advanced Processes, University of Idaho, Moscow, Idaho 83844-3026, USA |
| Abstract: | This paper describes how a submicrocrystalline structure can be produced by isothermal deformation of cast and powder metallurgy  -TiAl-based alloys at temperatures 1000°C and below using relatively inexpensive nickel-based superalloy die tooling. A detailed analysis of the effects of initial microstructure, chemical compositions, conditions of heat treatment and hot working on the formation of a homogeneous fine-grained microstructure in -TiAl-based alloys is presented. |
| Keywords: | binary alloys dynamic recrystallization fine-grained microstructure gamma titanium aluminide hot forging multicomponent alloys |
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