Evidence for stable stoichiometric Ti2C at the interface in TiC particulate reinforced Ti alloy composites

Wanjara, P.; Drew, R. A. L.; Root, J.H.; Yue, Steve

doi:10.1016/s1359-6454(99)00453-x

Cited by 71 publications

(43 citation statements)

References 3 publications

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“…The full-potential calculations confirm the stability of the cubic Ti 2 C, and monoclinic Ti 3 C 2 and Ti 6 C 5 at 0 K. The calculated ordering temperatures are in close agreement with those experiments in which special measures have been taken to prevent contamination of the samples [6 -10]. Much higher ordering temperatures obtained in some experimental studies [5,11] can be attributed to the presence of either hydrogen or oxygen impurities. In view of its importance the effect of impurities may deserve further investigations.…”

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confidence: 81%

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Ab InitioStudy of Phase Equilibria inTiCx

et al. 2001

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supporting

confidence: 81%

“…[6][7][8][9][10], or as high as ϳ2000 K, Refs. [5,11]. This large experimental uncertainty is the main reason why vacancy-ordered TiC x phases are not included in the Ti-C phase diagrams [12].…”

mentioning

confidence: 99%

Ab InitioStudy of Phase Equilibria inTiCx

et al. 2001

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“…Many works are devoted to the non-stoichiometricity of titanium carbide [6,[8][9][10]. Unfortunately, there are not enough publications showing the influence of this factor on the various processes of structure formation.…”

Section: Resultsmentioning

confidence: 99%

“…A number of researchers note that it is impossible to obtain TiC in which all interstitial sites are occupied by carbon atoms [8][9][10]. One of the reasons is the ability of oxygen and nitrogen atoms to penetrate into the TiC lattice together with carbon atoms.…”

Section: Introductionmentioning

confidence: 99%

Sintering Behavior and Microstructure of TiC-Me Composite Powder Prepared by SHS

Коростелева

Коржова

Krinitcyn

2017

Metals

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Titanium, its alloys, and refractory compounds are often used in the compositions of surfacing materials. In particular, under the conditions of electron-beam surfacing the use of synthesized composite powder based on titanium carbide with a metal binder (TiC-Me) has a positive effect. These powders have been prepared via the self-propagating high-temperature synthesis (SHS) present in a thermally-inert metal binder. The initial carbide particle distribution changes slightly in the surfacing layer in the high-energy rapid process of electron-beam surfacing. However, these methods also have their limitations. The development of technologies and equipment using low-energy sources is assumed. In this case, the question of the structure formation of composite materials based on titanium carbide remains open, if a low-energy and prolonged impact in additive manufacturing will be used. This work reports the investigation of the sintered powders that were previously synthesized by the layerwise combustion mode of a mixture of titanium, carbon black, and metal binders of various types. The problems of structure formation during vacuum sintering of multi-component powder materials obtained as a result of SHS are considered. The microstructure and dependences of the sintered composites densification on the sintering temperature and the composition of the SH-synthesized powder used are presented. It has been shown that under the conditions of the nonstoichiometric synthesized titanium carbide during subsequently vacuum sintering an additional alloy formation occurs that can lead to a consolidation (shrinkage) or volumetric growth of sintered TiC-Me composite depending on the type of metal matrix used.

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“…TiB2 reacts with Ti to form TiB whiskers and its clusters during the sintering process. TiC reacts with Ti to form a thin interface layer of Ti2C around TiC particles (Wanjara, P., et al, 2000, Vallauri, D., et al,2008. The wear resistance of TiB-and TiC-reinforced titanium matrix composites is expected to be favorable due to the very high Vickers hardness of TiB and TiC.…”

Section: Introductionmentioning

confidence: 99%

Dry sliding wear behavior of TiB/Ti and TiC/Ti composites

Izui

Toen

Kamegawa

et al. 2018

Mechanical Engineering Journal

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Titanium and its alloys have excellent strength properties and corrosion resistance, but they show poor wear resistance, which cannot be improved by heat treatment. The addition of hard ceramic particles to produce a titanium matrix composite is an effective method for enhancing the wear resistance of titanium and its alloys. In this study, TiC and TiB2 were used as reinforcement materials because a composite containing these reinforcements shows high tensile strength and different microstructure. TiB-and TiC-reinforced pure Ti matrix composites were fabricated by using the spark plasma sintering (SPS) method. Dry sliding wear tests were conducted on the composites using a ball-on-disk type testing machine. The effects of the reinforcement material, microstructural features, and reinforcement volume fraction on the wear behavior of the composites were investigated. The specific wear rates of both composites decreased with increasing reinforcement volume fraction. The specific wear rate of the TiC/Ti composite deceased drastically at a reinforcement volume fraction of 25 vol.%. TiC/Ti composites with reinforcement volume fractions of over 5 vol.% showed excellent wear resistance compared with the TiB/Ti composites. The wear behavior of the composite depended mainly on the distribution of reinforcement material and the nature of the reaction products between the matrix and reinforcement particles.

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Evidence for stable stoichiometric Ti2C at the interface in TiC particulate reinforced Ti alloy composites

Cited by 71 publications

References 3 publications

Ab InitioStudy of Phase Equilibria inTiCx

Ab InitioStudy of Phase Equilibria inTiCx

Sintering Behavior and Microstructure of TiC-Me Composite Powder Prepared by SHS

Dry sliding wear behavior of TiB/Ti and TiC/Ti composites

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