Microstructures, Electrical, Thermal, and Mechanical Properties of Bulk <scp><scp>Ti</scp><sub>2</sub><scp>AlC</scp></scp> Synthesized by Self‐Propagating High‐Temperature Combustion Synthesis with Pseudo Hot Isostatic Pressing

Bai, Yinjuan; He, Xiaodong; Zhu, Chuncheng; Chen, Guiqing

doi:10.1111/j.1551-2916.2011.04934.x

Cited by 83 publications

(41 citation statements)

References 40 publications

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“…The values of density, grain size, Vickers hardness, flexural strength and fracture toughness of the produced Ti 2 AlC and Ti 2 Al 0.8 Sn 0.2 C are shown in Table . The properties of Ti 2 AlC and Ti 2 Al 0.8 Sn 0.2 C prepared by in situ hot pressing method in our former work and by other methods in references are also listed for comparison. Observing that the Vickers hardness and flexural values of bulk materials increase significantly compared to materials prepared using in situ hot pressing method, the Vickers hardness values are enhanced by approximately 20% for both Ti 2 AlC and Ti 2 Al 0.8 Sn 0.2 C, and the value error of hardness gets smaller, indicating that the materials are more homogeneous and highly relative dense, the flexural strength value of Ti 2 AlC is enhanced by 51% and that of Ti 2 Al 0.8 Sn 0.2 C is enhanced by 27%.…”

Section: Resultsmentioning

confidence: 99%

“…As a representative MAX phase, Ti 2 AlC was first synthesized using Ti, Al, and C powders as raw materials in vacuum heating environment by Jeitsehko et al. in 1963, and the excellent oxidation resistance, high Young's modulus and high damage tolerance were characterized, respectively . Herein, Ti 2 AlC powders are applied as thick coatings in severe environment through thermal spray and cold spray techniques, Moreover, Ti 2 AlC phases have been used as reinforcement in metal matrix composites .…”

Section: Introductionmentioning

confidence: 99%

“…The synthesized aggregations were ball milled and then hot pressed (named two‐time hot‐pressing method, shorthand for two‐time HP in the following paper) to prepare fully dense Ti 2 AlC and Ti 2 Al 0.8 Sn 0.2 C bulks. Preparation methods of MAX bulks include Spark Plasma Sintering (SPS), in comparison with Self‐propagating High‐temperature Synthesis (SHS), HIP and two‐time HP . Two‐time HP is more convenient way to prepare single phase Ti 2 Al 1− x Sn x C ( x = 0‐1) solid solution bulks merited due to its low cost.…”

Section: Introductionmentioning

confidence: 99%

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The synthesis and mechanical properties of high pure Ti₂Al(Sn)C solid solution

Cai

Huang

et al. 2018

Int J Applied Ceramic Tech

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High pure Ti2Al(1−x)SnxC (x = 0‐1) powders were synthesized using Ti, Al, Sn, and TiC powders as raw materials by pressureless sintering method. The influence of sintering temperature and raw material ratio on the purity of Ti2AlC and Ti2Al0.8Sn0.2C powders were investigated. The results show that pure Ti2AlC and Ti2Al0.8Sn0.2C powders were obtained from the mixed raw materials ratio of Ti:1.1Al:0.9TiC and Ti:0.9Al:0.2Sn:0.9TiC at 1450°C, respectively. Subsequently, fully dense Ti2AlC and Ti2Al0.8Sn0.2C bulks were prepared using mechanically alloying and hot pressed sintering method. The Vickers hardness of Ti2AlC and Ti2Al0.8Sn0.2C approaches approximately about 6 GPa and 4 GPa, the flexural strength was measured to be 650 ± 36 MPa and 521 ± 33 MPa, respectively. Microstructural analysis reveals that grain delamination, kink bands, and crack deflection occurred around the indentation area and at the fracture surface.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The synthesis and mechanical properties of high pure Ti₂Al(Sn)C solid solution

Cai

Huang

et al. 2018

Int J Applied Ceramic Tech

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“…Different methods of fabrication of Ti 2 AlC and its composites for high temperature applications [4,8,9]. The material characterization of MAX phases has been limited to quasi-static loading regimes.…”

Section: Introductionmentioning

confidence: 99%

Static and Dynamic Thermo-Mechanical Behavior of Ti2AlC MAX Phase and Fiber Reinforced Ti2AlC Composites

Parrikar

Gao

Radović

et al. 2014

Conference Proceedings of the Society for Experimental Mechanics Series

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Ti 2 AlC MAX phase samples were processed by using Spark Plasma Sintering from commercially available Ti 2 AlC powder. Static and dynamic loading was performed by Universal Testing Machine and Split Hopkinson Pressure Bar (SHPB) respectively. The SHPB apparatus was modified to investigate the dynamic fracture initiation toughness. High speed photography was used to determine the fracture initiation time and the associated failure load. To widen applications, 20 vol % fiber of NextelTM-610 and NextelTM-720 have been added for the reinforcement of Ti 2 AlC, respectively. The results reveal that the peak compressive failure stress in dynamic conditions decreases with increasing temperatures, from 1,645 MPa at 25 C to 1,210 MPa at 1,200 C. The fracture experiments show that the dynamic fracture toughness is higher than the quasi-static value by approximately 35 %. The fracture toughness decreases with increase in temperature. The post mortem analysis of the fracture surfaces conducted using Scanning Electron Microscopy revealed that kinking along with intergranular cracking and delamination play important role in deformation of Ti 2 AlC. Compared to pure Ti 2 AlC, compressive fracture strength of 20 vol% Ti 2 AlC/720f and Ti 2 AlC/610f composites were enhanced by 39.7 and 32.6 % under static loading. IntroductionThe M n+1 AX n (MAX) phases are a class of nanolayered, machinable, early transition ternary metal carbides and/or nitrides [1]. Because of the structural similarity between MAX phases and their corresponding MX structure, they share lot of properties while some properties are significantly different from their MX counterparts [2,3].Ti 2 AlC is a MAX phase that has attracted a lot of attention as it is machinable, electrically conductive, lightweight and resistant to thermal shock, oxidation and creep [4][5][6][7]. Different methods of fabrication of Ti 2 AlC and its composites for high temperature applications [4,8,9]. The material characterization of MAX phases has been limited to quasi-static loading regimes. The K I values are reported to be in a large range from 4 to 16 MPa m 1/2 are probably attributed to the different grain size, the shape and dimension of the sample, sample impurities, different testing methods, and experimental conditions [10][11][12][13].In this study experiments were conducted to investigate the effect of different strain rate and temperature on the material characteristics. An experimental investigation of the stress strain characteristics of Ti 2 AlC under quasi-static and dynamic loading was conducted at room and elevated temperatures. The peak compressive stress decreases with increasing

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“…as a part of ceramic based armours based on functionally graded materials (FGM) for armoured personal carriers, patrol vehicles, helicopters or even main battle tanks. They can also be used as a matrix in ceramic-based composites reinforced by covalent phases [5,6]. They are known for their excellent electric conductivity and their metal like resistivity drops linear with decreasing temperature (in fact Ti 3 SiC 2 and Ti 3 AlC 2 conducts better than titanium metal) [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Processing And Properties Of MAX Phases – Based Materials Using SHS Technique

Chlubny¹,

Lis²,

Chabior³

et al. 2015

Archives of Metallurgy and Materials

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Authors present results of works on the interesting new group of advanced ceramics called MAX phases -Ti-based ternary carbides and nitrides. They have an original layered structure involved highly anisotropic properties laying between ceramics and metals, with high elastic modulus, low hardness, very high fracture toughness and high electrical and heat conductivity. Using Self-Propagating High-Temperature Synthesis (SHS) in the combustion regime it is possible to prepare MAX phases-rich powders that can be used as the precursors for preparation of dense MAX polycrystals by presureless sintering or hot-pressing. Different novel Ti-based phases with layered structures, namely: Ti 3 AlC 2 and Ti 2 AlC have been synthesized in a combustion regime. The possibility of controlling of combustion phenomena for obtaining near single-phase products is discussed in details as well as some of properties of the materials tested as structure and functional ceramics.Keywords: MAX phases, SHS, Hot-pressing, Ti 2 AlC, Ti 3 AlC 2Autorzy przedstawiają wyniki badań nad nową interesującą grupą zaawansowanych materiałów ceramicznych nazywanych fazami MAX -potrójnymi węglikami i azotkami tytanowymi. Posiadają one oryginalną strukturę warstwową, z której wynikają silnie anizotropowe właściwości (wysokie moduły sprężystości, niska twardość, bardzo wysoka odporność na kruche pękanie, dobre właściwości elektryczne i cieplne) umiejscawiające je pomiędzy ceramiką a metalami.Dzięki zastosowaniu Samorozwijającej się Syntezy Wysokotemperaturowej SHS możliwe było otrzymywanie bogatych w fazy MAX proszków, mogących służyć jako prekursory w preparatyce gęstych polikryształów za pomocą spiekania pod ciśnieniem lub swobodnego. Przeprowadzone zostały syntezy dwóch materiałów warstwowych: Ti 3 AlC 2 i Ti 2 AlC. W artykule przedstawiono możliwości kontrolowania procesu spalania w celu uzyskania niemal jednofazowych produktów a także przedstawiono niektóre właściwości badanych materiałów pod kątem zastosowania jako materiały funkcjonalne i strukturalne.

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Microstructures, Electrical, Thermal, and Mechanical Properties of Bulk Ti₂AlC Synthesized by Self‐Propagating High‐Temperature Combustion Synthesis with Pseudo Hot Isostatic Pressing

Cited by 83 publications

References 40 publications

The synthesis and mechanical properties of high pure Ti₂Al(Sn)C solid solution

The synthesis and mechanical properties of high pure Ti₂Al(Sn)C solid solution

Static and Dynamic Thermo-Mechanical Behavior of Ti2AlC MAX Phase and Fiber Reinforced Ti2AlC Composites

Processing And Properties Of MAX Phases – Based Materials Using SHS Technique

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Microstructures, Electrical, Thermal, and Mechanical Properties of Bulk Ti2AlC Synthesized by Self‐Propagating High‐Temperature Combustion Synthesis with Pseudo Hot Isostatic Pressing

Cited by 83 publications

References 40 publications

The synthesis and mechanical properties of high pure Ti2Al(Sn)C solid solution

The synthesis and mechanical properties of high pure Ti2Al(Sn)C solid solution

Static and Dynamic Thermo-Mechanical Behavior of Ti2AlC MAX Phase and Fiber Reinforced Ti2AlC Composites

Processing And Properties Of MAX Phases – Based Materials Using SHS Technique

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Product

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Microstructures, Electrical, Thermal, and Mechanical Properties of Bulk Ti₂AlC Synthesized by Self‐Propagating High‐Temperature Combustion Synthesis with Pseudo Hot Isostatic Pressing

The synthesis and mechanical properties of high pure Ti₂Al(Sn)C solid solution

The synthesis and mechanical properties of high pure Ti₂Al(Sn)C solid solution