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 pu...

Titanium aluminide (TiAl) alloys have emerged as promising materials for high-temperature applications due to their unique combination of strength, low density, and excellent oxidation resistance. However, the fabrication TiAl using conventional methods is challenging high melting points limited ductility. Selective laser (SLM), an additive manufacturing technique, offers a viable solution prod...

First-principles calculations based on a plane-wave pseudopotential method, as implemented in the VASP code, are presented for the formation energies of several transition-metal and non-transition-metal dopants in Ti–Al alloys. Substitution for either Ti or Al in g-TiAl, a2-Ti3Al, Ti2AlC, and Ti3AlC are considered. Calculated szero-temperatured defect formation energies exhibit clear trends as ...

We characterize the macroscopic effective mechanical behavior of a graphene sheet modeled by a hexagonal lattice of elastic bars, using Γ-convergence.

We introduce new definitions of convergence, based on adding stability criteria to Γ-convergence, that are suitable in many cases for studying convergence of local minimizers.

We study the Γ-convergence of the power-law functionals

Intermetallic Al-Si-based coatings can greatly increase the oxidation resistance of γ-TiAl alloys. However, effects Si addition are not fully understood. Therefore, it is difficult to determine content that optimal for resistance. pure Al and several Al-Si with varying contents between 1 81 at.% were studied. The produced using a combinatorial magnetron sputtering process. Scanning electron mic...

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...