DEVELOPMENT OF PRINCIPLES TO RISE PLASTICITY OF TITANIUM ALUMINIDES BY CONTROL OVER THEIR MICROSTRUCTURE

There the study objects are TiAl and Ti*003Al aluminides of titanium. The mechanical tests, the translucent and scanning electron microscope, the optic microscopy, the X-ray diffraction analysis have been taken place. The connection between the microstructure, the deformation mechanism and the stress-strain properties of titanium aluminides over the wide temperature range has been ascertained for the first time; the principles to rise the plasticity of these intermetallides by the control over their microstructure have been developed on this basis. The developed principles of plasticity rise of titanium aluminides may be used conformably to other intermetallides and were the basis of number of development works, which were connected with the manufacturing of large-sized and complex-shaped articles. The isothermic rolling of TiAl and the welding of this intermetallide under the superplasticity conditions have been realized for the first time. The deformation process of titanium aluminides has been introduced, the experimental batches of parts have been producedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio