A review of microstructure control and mechanical performance optimization of γ-TiAl alloys

R Xu, M Li, Y Zhao - Journal of Alloys and Compounds, 2023 - Elsevier
Upgrading and developing metallic materials are bases for improving the performance of
aircraft. As one of the new structural metallic materials used in aerospace, lightweight and …

Characteristic effects of alloying elements on β solidifying titanium aluminides: A review

SA Raji, API Popoola, SL Pityana, OM Popoola - Heliyon, 2020 - cell.com
The high strength-to-weight ratio property of titanium aluminide (TiAl) based intermetallic
alloys makes researchers regard this type of material as a potential replacement for the …

Investigation of the O phase in the Ti–22Al–25Nb alloy during deformation at elevated temperatures: plastic deformation mechanism and effect on B2 grain boundary …

B Shao, W Tang, S Guo, Y Zong, D Shan, B Guo - Acta Materialia, 2023 - Elsevier
Abstract The Ti–22Al–25Nb alloy, which possesses a complex microstructure, is a new type
of lightweight high-temperature structural material. Revealing the effects of microstructure …

Effect of Sn addition on the high-temperature oxidation behavior of high Nb-containing TiAl alloys

Y Pan, X Lu, MD Hayat, F Yang, CC Liu, Y Li, XY Li… - Corrosion …, 2020 - Elsevier
The effect of Sn addition on the oxidation behavior of high-Nb containing TiAl alloys was
investigated with isothermal oxidation tests conducted in static air at 1000° C. Sn addition …

[HTML][HTML] Effect of Sn addition on the mechanical properties and high-temperature oxidation resistance of intermetallic TiAl alloys by first principles study and …

C Zhang, S Zhang, Y Pan, W Xu, H Singh, B Liu… - Journal of Materials …, 2022 - Elsevier
Tin (Sn) can be used as an effective TiAl powder sintering aid, but it is unclear whether Sn
will deteriorate its properties as a micro-alloyed element in TiAl intermetallic. This work …

Effects of trace Nb addition on microstructure and properties of Ti–6Al–4V thin-wall structure prepared via cold metal transfer additive manufacturing

J Gou, Z Wang, S Hu, J Shen, Y Tian, G Zhao… - Journal of Alloys and …, 2020 - Elsevier
To refine the coarse columnar prior-β grains across the layers in the cold metal transfer
additive manufacturing (CMTAM) of a Ti–6Al–4V thin-wall structure, the addition of trace Nb …

Effect of Gd addition on phase composition, structure, and properties of beta-solidifying TiAl-based alloy with Zr and Cr content variability

PV Panin, AS Kochetkov, AV Zavodov, EA Lukina - Intermetallics, 2020 - Elsevier
The aim of the present work was to study the influence of Gd microaddition on the sequence
and temperatures of phase transformations as well as on the microstructural evolution and …

Composition and temperature dependence of α2 phase decomposition in high Nb-containing lamellar γ-TiAl alloys: Experiments and first-principles calculations

C Dai, Z Yang, J Sun, S Lu, L Vitos - Acta Materialia, 2021 - Elsevier
This paper reports an experimental and theoretical study of composition and temperature
dependence of α 2 phase decomposition in lamellar γ-Ti−(43∼ 47) Al−(4∼ 10) Nb alloys …

Sintering densification, microstructure and mechanical properties of Sn-doped high Nb-containing TiAl alloys fabricated by pressureless sintering

Y Pan, X Lu, C Liu, T Hui, C Zhang, X Qu - Intermetallics, 2020 - Elsevier
The challenge of producing high-density TiAl alloys is hereby addressed by a simple
pressureless sintering approach. A systematic study has been made on the effect of Sn …

Microstructure evolution and elevated temperature wear performance of in-situ laser-synthesized Ti-25Al-17Nb coating on Ti-6Al-4V

W Li, W Zhang, H Zhai, S Wang, Q Song, RJK Wood… - Tribology …, 2022 - Elsevier
Abstract A ternary Ti-25Al-17 Nb coating (89.5 vol.% O phase and 4.3 vol.% α 2 phase) was
fabricated from the pre-alloyed powder by in-situ laser synthesis. The powder was laser …