Mechanical properties of materials based on MAX phases of the Ti-Al-C system

Prikhna, T. A.; Дуб, С. Н.; Starostina, Alexandra; Karpets, M. V.; Cabiosh, T.; Chartier, Patrick

doi:10.3103/s1063457612020049

Cited by 24 publications

(22 citation statements)

References 10 publications

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“…They have perovskite-like crystal structures and the most abundant stoichiometries are M 2 AX (211), M 3 AX 2 (312) and M 4 AX 3 (413), which in fact differ by the amount of carbide or nitride layers in the unit cells separated by layers of A-group metal elements. Materials have high bending and compression strength, fracture toughness at room and high temperatures (the destruction occurred mainly along the basal planes via kinks formation [3][4][5][6]), * corresponding author; e-mail: prikhna@ukr.net excellent damping characteristics, high thermal shock resistance, chemical stability, good machinability. Besides, these materials are characterized by high electro-and thermal conductivities, low coefficients of friction and thermal expansion, resistance to radioactivity and oxidation.…”

Section: Introductionmentioning

confidence: 99%

Presence of Oxygen in Ti-Al-C MAX Phases-Based Materials and their Stability in Oxidizing Environment at Elevated Temperatures

et al. 2018

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The Ti3AlC2-, (Ti,Nb)3AlC2-and Ti2AlC-based materials turned out to be more resistant than Crofer JDA steel in oxidizing atmosphere as 1000 h long tests at 600• C have shown. But the amounts of oxygen absorbed by the materials during testing were different. The Ti2AlC-based material demonstrated the lowest oxygen uptake, (Ti,Nb)3AlC2-based absorbed a somewhat higher amount and the highest amount was absorbed by Ti3AlC2-based material. Scanning electron microscopy and the Auger study witnessed that amounts of oxygen in the MAX phases before the exposure in air were as well different: the approximate stoichiometries of the matrix phases of materials were Ti3.1−3.2AlC2−2.2, Ti1.9−4Nb0.06−0.1AlC1.6−2.2O0.1−1.2 and Ti2.3−3.6AlC1−1.9O0.2−0.6, respectively. The higher amount of oxygen present in the MAX phase structures may be the reason for higher resistance to oxidation during long-term heating in air at elevated temperature. The studied materials demonstrated high stabilities in hydrogen atmosphere as well. The bending strength of the Ti3AlC2-and (Ti,Nb)3AlC2-based materials after keeping at 600• C in air and hydrogen increased by 10-15%, but the highest absolute value of bending strength before and after being kept in air and hydrogen demonstrated the Ti2AlC-based material (about 590 MPa).

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Section: Introductionmentioning

confidence: 99%

Presence of Oxygen in Ti-Al-C MAX Phases-Based Materials and their Stability in Oxidizing Environment at Elevated Temperatures

et al. 2018

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“…Due to the structure of MAX-phases, MAX-phase materials satisfy the highest requirements associated with high temperatures, corrosion environment and thermal cycling [1][2][3][4]. For the same reason, these materials can be used in various advanced industries, such as aircraft and aerospace engine building, electrochemical and electrical industries.…”

Section: Introductionmentioning

confidence: 99%

“…Another way to reduce the TiC content in the material is apparently heat treatment at a temperature close to the temperature of MAX-phase formation by reactions (2) and (3). However, this issue has not been studied in full and requires additional research.…”

Section: Introductionmentioning

confidence: 99%

Heat treatment of composite based on MAX-phases of the Ti-Al-C system

et al. 2017

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Abstract. This paper studies the effect of heat treatment performed at the MAX-phases formation temperature on the phase composition of the MAX/TiC-composite formed in the Ti-Al-C system in the conditions of free SHS-compression. The dependence between the titanium carbide (TiC) content and delay time before applying the load during free SHS-compression is defined. The experimental results show that the proposed heat treatment leads to carbide content reduction.

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“…As with most metals, they have high electric and thermal conductivities [3][4][5], are easily machinable [6], and possess exceptional thermal shock resistance and damage tolerance [3,5,7]. Some, such as Ti 2 AlC and Ti 3 SiC 2 , are lightweight, stiff and creep [8][9][10][11][12], oxidation [13][14][15][16], and fatigue [17] resistant.…”

Section: Introductionmentioning

confidence: 99%

On the interactions of Ti2AlC, Ti3AlC2, Ti3SiC2 and Cr2AlC with silicon carbide and pyrolytic carbon at 1300 °C

Bentzel

Ghidiu

Anasori

et al. 2015

Journal of the European Ceramic Society

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a b s t r a c tHerein we report on the reactivity between silicon carbide, SiC, and pyrolytic carbon, PG, with the MAX phases, Ti 2 AlC, Ti 3 AlC 2 , Ti 3 SiC 2 and Cr 2 AlC. Diffusion couples were assembled and heated to 1300 • C under a load corresponding to a uniaxial stress of ∼30 MPa for 4, 10, and 30 h in a vacuum hot press, at a vacuum level of less than 1 Pa. The couples were then examined using optical and scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and orientation image microscopy. Based on the totality of the results -after 30 h at 1300 • C -it is concluded that neither Ti 3 SiC 2 nor Cr 2 AlC appear to react with SiC. The former also appears not to react with PG. When heated in the vacuum of the hot press, both Ti 2 AlC and Ti 3 AlC 2 dissociated to form TiC surface layers that were ≈15-20 m thick. After reaction of Ti 2 AlC with SiC and PG, the TiC layer was only ≈10 m thick, indirectly confirming that the dissociation of these phases in vacuum was due to the Al evaporation from the surfaces. The Ti 3 AlC 2 /SiC and Ti 3 AlC 2 /PG diffusion couples resulted in TiC layers that were ≈50 m and ≈100 m thick, respectively. The Cr 2 AlC/PG diffusion couple resulted in the formation of ≈10 m interfacial layer comprised of Cr 3 C 2 and Cr 7 C 3 at the interface between the two materials.

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Mechanical properties of materials based on MAX phases of the Ti-Al-C system

Cited by 24 publications

References 10 publications

Presence of Oxygen in Ti-Al-C MAX Phases-Based Materials and their Stability in Oxidizing Environment at Elevated Temperatures

Presence of Oxygen in Ti-Al-C MAX Phases-Based Materials and their Stability in Oxidizing Environment at Elevated Temperatures

Heat treatment of composite based on MAX-phases of the Ti-Al-C system

On the interactions of Ti2AlC, Ti3AlC2, Ti3SiC2 and Cr2AlC with silicon carbide and pyrolytic carbon at 1300 °C

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