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

Pаnin, P.V.; Kochetkov, A. S.; Заводов, А. В.; Лукина, Е.А.

doi:10.1016/j.intermet.2020.106781

Cited by 25 publications

(5 citation statements)

References 35 publications

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“…During the spraying process, the electrode and the melt do not come into contact with any surface which excludes contamination of the resulting powder. The temperatures of critical points which are necessary for the rational choice of the atomization parameters were determined for the studied alloy in our previous research (T liquidus/solidus ≈ 1530 / 1470 °C) [14].…”

Section: Methodsmentioning

confidence: 99%

Production and investigation of powders for additive synthesis from a new beta-solidifying TiAl-based alloy

Pаnin

Bogachev

Лукина

2021

J. Phys.: Conf. Ser.

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Chemical composition, structure, and technological properties have been investigated for metal powder compositions (MPCs) of a new six-component TiAl-based alloy with Gd microadditions: Ti-31.0Al-2.5V-2.5Nb-2.5Cr-0.4Gd, wt.% (Ti-44.5Al-2V-1Nb-2Cr-0.1Gd, at.%). Three MPCs fractions (10–63, 40–100, 80–120 μm) were produced by electrode induction melting and inert gas atomization technique and targeted for the additive synthesis of parts. It is shown that the chemical composition of the MPCs for the main elements corresponds to that of the electrode. In contrast, a 1.5-fold increase of the oxygen content in the MPCs was observed, which is being the result of natural oxidation of powder particles upon air environment due to developed specific surface. It has been determined that the phase composition of the MPCs (γ+α(α2)+β) differs from the equilibrium phase composition of the electrode (γ+α2)+β0/B2) and corresponds to a rapidly quenched metastable state, which indicates high solidification rates in the atomization process, exceeding critical cooling rates of the alloy. The technological properties, specifically the powder flowability, were found to be improved for 40–100 and 80–120 μm fractions, making them applicable for additive synthesis of parts from the studied alloy by selective electron-beam melting method

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Section: Methodsmentioning

confidence: 99%

Production and investigation of powders for additive synthesis from a new beta-solidifying TiAl-based alloy

Pаnin

Bogachev

Лукина

2021

J. Phys.: Conf. Ser.

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“…The β-solidifying γ-TiAl alloy with the measured chemical composition Ti-43.2Al-1.9V-1.1Nb-1.0Zr-0.2Gd-0.2B (at.%) was used in this study. Ingots of the alloy were produced by multiple vacuum-arc melting [35].…”

Section: Methodsmentioning

confidence: 99%

Oxidation resistance and thermal stability of a β-solidified γ-TiAl based alloy after nitrogen ion implantation

et al. 2020

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“…In contrast, the formation of La-Al layer on TiAl-La by sulfidation process did not contribute to increased oxidation resistance. Panin et al [ 22 ] reported that the additional Gd could refine the microstructure of Zr- and Cr-containing TiAl alloys, and thus decrease the grain size. Additionally, nano-particles of Gd 2 O 3 phases were identified, which increased plastic elongation without affecting the strength of the alloys.…”

Section: Oxidation Behaviour Of Ti-al Alloysmentioning

confidence: 99%

A Short Review on the Phase Structures, Oxidation Kinetics, and Mechanical Properties of Complex Ti-Al Alloys

et al. 2021

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This paper reviews the phase structures and oxidation kinetics of complex Ti-Al alloys at oxidation temperatures in the range of 600–1000 °C. The mass gain and parabolic rate constants of the alloys under isothermal exposure at 100 h (or equivalent to cyclic exposure for 300 cycles) is compared. Of the alloying elements investigated, Si appeared to be the most effective in improving the oxidation resistance of Ti-Al alloys at high temperatures. The effect of alloying elements on the mechanical properties of Ti-Al alloys is also discussed. Significant improvement of the mechanical properties of Ti-Al alloys by element additions has been observed through the formation of new phases, grain refinement, and solid solution strengthening.

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

Cited by 25 publications

References 35 publications

Production and investigation of powders for additive synthesis from a new beta-solidifying TiAl-based alloy

Production and investigation of powders for additive synthesis from a new beta-solidifying TiAl-based alloy

Oxidation resistance and thermal stability of a β-solidified γ-TiAl based alloy after nitrogen ion implantation

A Short Review on the Phase Structures, Oxidation Kinetics, and Mechanical Properties of Complex Ti-Al Alloys

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