High temperature physical and mechanical properties of large-scale Ti2AlC bulk synthesized by self-propagating high temperature combustion synthesis with pseudo hot isostatic pressing

Bai, Yinjuan; He, Xiaodong; Wang, Rongguo; Sun, Yun; Zhu, Chuncheng; Wang, Shuai; Chen, Guiqing

doi:10.1016/j.jeurceramsoc.2013.04.014

Cited by 61 publications

(52 citation statements)

References 69 publications

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“…After which, at 1000°C the maximum failure stress declines significantly by about 25%. These results agree with increased deterioration of Ti 2 AlC which has been observed at over 800-900°C [5,11,12]. All the unconfined specimens failed in a brittle fashion with a progressively gradual post maximum stress response with increasing temperature.…”

Section: Discussion Of Experimentssupporting

confidence: 84%

“…Most MAX phases have a unique combination of material attributes akin to both ceramics and metals. A few of their favorable properties likening them to ceramics are high elastic stiffness and service temperature along with low thermal expansion and low density [5][6][7]. They possess advantageous qualities associated with metals by being good electrical and thermal conductors as well as being relatively soft, easily machinable and damage tolerant [5,[7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Response of TI2ALC Under Radial Confinement at High Temperature

Clarkin

Parrikar

Shukla

2017

J. dynamic behavior mater.

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Experiments were performed to evaluate the dynamic mechanical response of MAX phase material Ti2AlC at high temperature (HT) and under radial confinement.A Split Hopkinson Pressure Bar (SHPB) apparatus was employed to conduct experiments at a strain rate of 500 s 1. High speed photography was used to capture the dynamic response of unconfined specimens. An induction coil was used to heat the specimens from 25 to 1000°C. Nickel-cobalt-ferrous alloy (Kovar) shrink fit sleeves were utilized to produce a mechanical radial pressure of 30 to 195 MPa. Unconfined room temperature (RT) and HT experiments revealed that Ti2AlC fails in a gradual brittle (also referred to as graceful failure) manner with a low dependency on temperature up to 800°C. All experiments conducted with radial confinement produced a fully plastic response without failure. The addition of hydrostatic confinement increased the maximum compressive stress for all temperatures and allowed specimens to reach strains in excess of 8% without failing. Optical and Scanning Election Microscopy (SEM) images were taken of the cross-section of recovered confined specimens. Imaging revealed conical damage patterns on each end of the specimen which facilitate the plastic response.iii ACKNOWLEDGMENTS

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Section: Discussion Of Experimentssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Dynamic Response of TI2ALC Under Radial Confinement at High Temperature

Clarkin

Parrikar

Shukla

2017

J. dynamic behavior mater.

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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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MAX Phases as Nanolaminate Materials: Chemical Composition, Microstructure, Synthesis, Properties, and Applications

Xia

2021

Adv Eng Mater

107

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Ceramics is one of the oldest materials prepared and used by human beings. Ancient ancestors started to make pottery by forming and burning clay since the earliest civilizations. Ancient people started to fabricate burnt claywares since %6500 B.C., and clayware as a commercial product was available by %4000 B.C. [1] In modern society, as one of the largest branches in material family, ceramics have been developed and used in almost every fields of human beings' lives. In some senses, ceramics and metals possess complementary properties; generally, ceramics show the advantages of high strength, high hardness, high chemical stability, high wear resistance, whereas ceramics typically show intrinsic brittleness and poor plasticity due to their covalent and/or ionic chemical bonding; metals have good plasticity, high toughness, and high thermal and electronic conductivity; however, they typically show lower chemical stability and lower hardness than ceramics. It would be marvelous for a material to combine the properties of ceramics and metals. MAX phases are the materials that meet the challenge.MAX phases are a family of nanolaminate ternary nitrides and carbides, which were first discovered by Nowotny and his colleagues in Vienna. [2] In the beginning, MAX phases have a general formula of M nþ1 AX n (n ¼ 1-3), where M is a transition metal, A is an element from group A, and X is either carbon or nitrogen. The n value could be 1, 2, or 3, and the phases are named as 211, 312, and 413 MAX phases, respectively. These MAX phases show a hexagonal crystal structure (P63/mmc), consisting of M 6 X octahedra separated by A atomic layers. [3] M─X bonds in M 6 X octahedra are strong covalent bonds, whereas the M─A bonds between M 6 X and A atomic layer are much weaker, especially in shear. This unique bonding structure is analogous to graphite, and it is the special bonding structure that endows MAX phases properties of both ceramics and metals. On the one hand, MAX phases are stiff, lightweight, chemically stable, and oxidation resistant, which are the features of ceramics; on the other hand, they exhibit good electric and thermal conductivity as well as excellent machinability and damage tolerance, which are the features of metals.Unfortunately, MAX phases had not attracted enough attention in both academia and industry until 1996 when Barsoum et al. [4] synthesized and characterized Ti 3 SiC 2 . Ever since then, material researchers become more interested in this material. [5] In the past two decades, many MAX phases have been synthesized and tested to show highly unusual properties, [6] which will be discussed with detail in the following sections. The intensive extent of the researches on MAX phases can be demonstrated by the published papers (Figure 1). A remarkable jump can be observed between 1998 and 1999, and after that, the number of published papers increases steadily, reaching as high as 980 papers in 2019 (Figure 1a). From another aspect, the citation of the milestone paper published by Barsoum [4] also signific...

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High temperature physical and mechanical properties of large-scale Ti2AlC bulk synthesized by self-propagating high temperature combustion synthesis with pseudo hot isostatic pressing

Cited by 61 publications

References 69 publications

Dynamic Response of TI2ALC Under Radial Confinement at High Temperature

Dynamic Response of TI2ALC Under Radial Confinement at High Temperature

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

MAX Phases as Nanolaminate Materials: Chemical Composition, Microstructure, Synthesis, Properties, and Applications

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High temperature physical and mechanical properties of large-scale Ti2AlC bulk synthesized by self-propagating high temperature combustion synthesis with pseudo hot isostatic pressing

Cited by 61 publications

References 69 publications

Dynamic Response of TI2ALC Under Radial Confinement at High Temperature

Dynamic Response of TI2ALC Under Radial Confinement at High Temperature

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

MAX Phases as Nanolaminate Materials: Chemical Composition, Microstructure, Synthesis, Properties, and Applications

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