Because of their inherent low ductility, TiAl-based materials are difficult to fabricate, especially thin gage titanium gamma aluminide (TiAl) sheet and foil. In this paper, an innovative powder metallurgy approach for producing cost-effective thin gage TiAl sheets (with 356 mm long and 235 mm wide, and a thickness of 0.74, 1.09, 1.55, and 2.34 mm, respectively) is presented. The microstructure...

Abstract. Following a crash course in neutron and synchrotron diffraction standards, applications are demonstrated on selected metallic systems, comprising the atomic order titanium aluminide intermetallics at thermal mechanical processing. High pressure torsion processed specimens show heterogeneous structure order. Upon heating, their nanostructure evolves revealing regimes of recovery, recry...

    Y-TiAl intermetallic alloy have a good potential for use as biomaterial, due to its good corrosion resistance. In this paper, two fundamental electrochemical techniques namely electrochemical impedance spectroscopy and potentiodynamic anodic polarization were used to evaluate the corrosion performance of g-TiAl in Ringer's solution. Surface modification treatments were employed with the pur...

The article deals with the effect of irradiation Si+ ions on phase transformations in Ti–Al system during thermal annealing. An aluminum film a thickness 500 nm was deposited VT1-00 titanium samples by magnetron sputtering, followed ion implantation. Samples before and after Si were annealed vacuum 10?4 Pa temperature range 600–1000 °C. It established that implantation reduces dissolution Al ?-...

In order to form model aluminide coatings for studying critical issues related to their high temperature oxidation and corrosion performance, a laboratory chemical vapor deposition (CVD) procedure is being used to more rigorously control the coating process in terms of composition, purity and microstructure. One ferritic (Fe-9Cr1Mo) and one austenitic alloy (304L) were selected as substrate mat...