Thermal barrier coatings (TBCs), consisting of physical vapor deposited (PVD) partially stabilized zir-conia (PSZ, 8 wt. %Y203) and a diffusion aluminide bond coat, were characterized as a function of time after oxidative isothermal heat treatment at 1373 K in air. The experimental characterizations was conducted by X-ray diffraction analysis and scanning electron microscopy (SEM) with energy-d...

In this article, we present a strategy to decouple the relative influences of colony, domain and lamella boundary strengthening in fully lamellar titanium aluminide alloys, using a physics-based crystal plasticity modeling strategy. While lamella and domain boundary strengthening can be isolated in experiments using polysynthetically twinned crystals or mircomechanical testing, colony boundary ...

Electron beam powder bed fusion (PBF-EB/M) has been attracting great research interest as a promising technology for additive manufacturing of titanium aluminide alloys. However, challenges often arise from the process-induced evaporation aluminum, which is linked to PBF-EB/M process parameters. This study applied different volumetric energy densities during processing deliberately adjust alumi...

Molecular dynamics (MD) simulations of creep generally face the problem that most often evolves on time scales hard to capture with MD due their typically short step size. Consequently, studies use unrealistically high temperatures and stresses simplified atomistic models make creep-like processes happen computationally accessible scales. Apparently, this compromises physical reliability such s...