Pseudo-twin boundary improves flow stress and cyclic stability of TiAl single crystal

Y Zhu, M Yi, W Guo - International Journal of Plasticity, 2024 - Elsevier
Polysynthetically twinned (PST) TiAl single crystal with lamellar structures exhibits great
mechanical properties at room temperature. Therein twin boundaries (TBs) are important for …

Superior high-temperature strength-ductility of TiB2–Ti2AlN/TiAl composite with core-shell microstructure

Y Wang, T Ma, Z Chen, X Zhang, X Wang, D Zhu… - Materials Science and …, 2024 - Elsevier
Herein, a novel core-shell structured TiAl composite consisting of nanoparticles “shell” and a
near fully lamellar “core” was designed using a Ti–48Al–2Nb–2Cr alloy and Boron nitride …

Enhancing high-temperature mechanical property of Ti4822 alloy with in-situ Ti2AlC precipitates

X Kang, Z Pu, Z Cao, X Qin, F Wu, C Liu - Materials Today Communications, 2024 - Elsevier
Ti4822/xC composites with excellent high-temperature performance were prepared by spark
plasma sintering technique. As the carbon content increased from 0.5 wt% to 1.5 wt%, the …

Microscopic mechanism of the effect of Nb and Cr co-doping on the strength and ductility of Ti2AlC/Ti3Al coherent interface

T Yang, J Wang, CH Zhang - Surfaces and Interfaces, 2023 - Elsevier
We employ first-principles calculations to study the adhesion work, interface energy, and
electronic structure of Ti 2 AlC/Ti 3 Al interfaces. A novel interface mismatch model is …

In situ tailoring of precipitation behavior and improving mechanical properties of (Ti2AlC+ Y2O3) reinforced TiAl alloy produced by directed energy deposition

H Yue, X Xu, Y Wang, K Miao, H Peng, B Gao… - Materials Science and …, 2024 - Elsevier
Abstract A (Ti 2 AlC+ Y 2 O 3) synergistically reinforced Ti–48Al–2Cr–2Nb alloy was
prepared by directed energy deposition with in situ tailoring of precipitate formation by …

Effect of TiB2 on the microstructure and mechanical properties of TiAl alloy produced by laser direct energy deposition

H Yue, J Yang, Y Wang, K Miao, Y Yao, J Yang… - Materials …, 2024 - Elsevier
Abstract A Ti-48Al-2Cr-2Nb alloy was prepared by laser directed energy deposition (DED).
The microstructure of the DED-produced Ti-48Al-2Cr-2Nb alloy exhibited a coarse columnar …

High-temperature oxidation behavior of multi-phase ceramic particles-reinforced TiAl composites with different microstructures

G Zeng, T Ma, Y Wang, X Wang, H Fang, R Chen - Ceramics International, 2024 - Elsevier
The high-temperature oxidation behaviors of multiphase ceramic particle-reinforced TiAl
composites with different microstructures were investigated. The TiAl composites were …

In-situ observation of microstructure evolution and improvement of distribution of reinforcing particles to reveal dual-enhancement mechanisms of strength and …

X Yang, H Fang, L Zhou, Y Tan, X Ding… - Materials Science and …, 2023 - Elsevier
To achieve a more uniform distribution of the reinforcing particle and then refine them,
ultrasonic treatment (UT) performs in the liquid-solid two-phase region for a certain time of …

A systematic investigation on the surface properties of Ti2AlC via first-principles calculations

P Liu, Z Liu, B Hou, A Wang, J Xie, Z Wang - Surface Science, 2023 - Elsevier
In this study, the surface properties of Ti 2 AlC surface with different configurations were
systematically investigated based on the analysis of surface energy and electronic structure …

Comparative study on the effect of Nb/Mo alloying on the oxidation behavior of Ti42Al5Mn alloy

P Zhao, Y Ma, W Xing, H Ma, K Liu - Corrosion Science, 2024 - Elsevier
The oxidation behavior of Ti42Al5Mn0. 5Nb, Ti42Al5Mn0. 8Nb, Ti42Al5Mn0. 5Mo, and
Ti42Al5Mn0. 8Mo alloys (in at%) was investigated at 800° C. In the Nb-containing alloys, the …