γ-titanium aluminide (TiAl) alloys with fully lamellar microstructure possess excellent properties for high-temperature applications. Such has interfaces at different length scales. The separation behavior of the lamellae these is crucial mechanical whole material. Unfortunately, quantifying it by experiments difficult. Therefore, we use molecular dynamics (MD) simulations to this end. Specific...

The effect of applied voltage (400, 450, and 500 V) on the microstructure, bioactivity, corrosion rate plasma electrolytic oxidation (PEO) coatings γ-TiAl alloy was investigated. microstructure chemical composition achieved were studied, along with their bioactivity behaviors in simulated body fluid (SBF). results demonstrated that higher coating′s surface pore, greater number suitable sites fo...

One of the principal problems with nano-crystalline materials is producing them in quantities and sizes large enough for valid mechanical property evaluation. The purpose of this study was to explore an innovative method for producing nano-crystalline γ-TiAl bulk materials using high energy ball milling and brief secondary processes. Nano-crystalline powder feedstock was produced using a Fritsc...

In this work, plastic deformation was locally introduced at room temperature by nanoindentation on a γ-TiAl-based alloy. Comprehensive analyses of microstructures were performed before and after deformation. In particular, the Burgers vectors, the line directions, and the mechanical twinning systems were studied via accurate electron channeling contrast imaging. Accommodation of the deformation...

In this work, plastic deformation was locally introduced at room temperature by 12 nanoindentation on a γ-TiAl based alloy. Comprehensive analyzes of microstructures were 13 performed before and after deformation. In particular, the Burgers vectors, the line directions and 14 the mechanical twinning systems were studied via accurate electron channeling contrast imaging. 15 Accommodation of the ...

In this paper, the equiaxed superfine/nanocrystalline duplex PM-TiAl-based alloy with (γ + α₂) microstructure, Ti-45Al-5Nb (at %), has been synthesized by high-energy ball milling and vacuum hot pressing sintering. Superplastic deformation behavior has been investigated at 1000 °C and 1050 °C with strain rates from 5 × 10-5 s-1 to 1 × 10-3 s-1. The effects of deformation on the microstructure a...