Cyclic oxidation behaviour of intermetallic Ti-46Al-8Ta alloy in air

Pelachová, T.; Lapin, J.

doi:10.4149/km_2015_6_415

Cited by 6 publications

(2 citation statements)

References 17 publications

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“…% of Ta to an SPS produced Ti-46.5Al alloy promoted the formation of an Al 2 O 3 layer severing as a diffusion barrier on the metal-oxide interface, hence, resulting in outstanding resistance to oxidation. For further reading on the effect Ta on the oxidation performance of TiAl, the reader is referred to [123][124][125][126]. Remarkable creep properties were obtained in some research work [127][128][129] when Ta and W were added to TiAl alloys.…”

Section: St and 2nd Generation Of Tial Alloysmentioning

confidence: 99%

Spark Plasma Sintering of Titanium Aluminides: A Progress Review on Processing, Structure-Property Relations, Alloy Development and Challenges

Mogale

Matizamhuka

2020

Metals

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Titanium aluminides (TiAl) have the potential of substituting nickel-based superalloys (NBSAs) in the aerospace industries owing to their lightweight, good mechanical and oxidation properties. Functional simplicity, control of sintering parameters, exceptional sintering speeds, high reproducibility, consistency and safety are the main benefits of spark plasma sintering (SPS) over conventional methods. Though TiAl exhibit excellent high temperature properties, SPS has been employed to improve on the poor ductility at room temperature. Powder metallurgical processing techniques used to promote the formation of refined, homogeneous and contaminant-free structures, favouring improvements in ductility and other properties are discussed. This article further reviews published work on phase constituents, microstructures, alloy developments and mechanical properties of TiAl alloys produced by SPS. Finally, an overview of challenges in as far as the implementation of TiAl in industries of interest are highlighted.

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Section: St and 2nd Generation Of Tial Alloysmentioning

confidence: 99%

Spark Plasma Sintering of Titanium Aluminides: A Progress Review on Processing, Structure-Property Relations, Alloy Development and Challenges

Mogale

Matizamhuka

2020

Metals

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“…Meanwhile, the comprehensive performance of TiAl alloys can even match the performance of Ni-based superalloys, while the density is only half of the latter [1][2][3][4][5][6][7]. To extend the service range of TiAl alloys to high strength and temperature, the alloying technique has been proven to be an effective way to improve the performance of TiAl alloys.…”

Section: Introductionmentioning

confidence: 99%

Thermal stability and precipitation strengthening of fully lamellar Ti-45Al-5Nb-0.2B-0.75C alloy

Čegan¹,

Szurman²

2018

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The alloy with a composition Ti-45Al-5Nb-0.2B-0.75C (at.%) was prepared by induction melting and centrifugal casting. The fully lamellar microstructure of the alloy without carbides was produced by heat treatment consisting of hot isostatic pressing (HIP) and solution annealing followed by cooling to room temperature. The stability of the fully lamellar γ(TiAl) + α2(Ti3Al) microstructure was studied at temperatures of 750, 850 and 950• C up to an ageing time of 3400 h. The microstructure analysis shows that the most dominant change in the microstructure was the α2 lamellae thinning, which was more pronounced at a higher ageing temperature and longer time. The formation of recrystallized γ grains and Ti2AlC carbides was observed during ageing at the temperatures of 850 and 950• C. The microstructural changes affected the microhardness at room temperature (RT) and compression yield strength at temperatures ranging from RT to 950K e y w o r d s : titanium aluminides, thermal stability, microstructure, carbides, yield strength

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The effect of Ta additions on the oxidation resistance of SPS-produced TiAl alloys

Cobbinah

Matizamhuka

Machaka

et al. 2020

Int J Adv Manuf Technol

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Cyclic oxidation behaviour of intermetallic Ti-46Al-8Ta alloy in air

Cited by 6 publications

References 17 publications

Spark Plasma Sintering of Titanium Aluminides: A Progress Review on Processing, Structure-Property Relations, Alloy Development and Challenges

Spark Plasma Sintering of Titanium Aluminides: A Progress Review on Processing, Structure-Property Relations, Alloy Development and Challenges

Thermal stability and precipitation strengthening of fully lamellar Ti-45Al-5Nb-0.2B-0.75C alloy

The effect of Ta additions on the oxidation resistance of SPS-produced TiAl alloys

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