Development of Ti(C,N)-based cermets with (Co,Fe,Ni)-based high entropy alloys as binder phase

Obra, A.G. de la; Sayagués, María Jesús; Chicardi, E.; Gotor, F.J.

doi:10.1016/j.jallcom.2019.152218

Cited by 38 publications

(8 citation statements)

References 53 publications

(29 reference statements)

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“…-WC-CoCrFeNiMn [10], -SiC-CoCrFeMnNi [11], -TiC-FeCrNiCoAlCu [12; 13], -TiC-FeMnCrNiCo [14], -TiCN-AlCoCrFeNi [15], -TiCN-CoCrFeNiCu [16], -Ti(C,N)-ВЭС на основе (Co, Fe, Ni) [17], -TiCN-CrMnFeCoNi [18], -TiC-CoCrFeNiMe (Me = Mn, Ti, Al) [19].…”

Section: введение введениеmentioning

confidence: 99%

“…Аналогичную методику получения кермета на основе ВЭС-связующего использовали и авторы работы [17] -образование однофазного твердого раствора с ГЦК-структурой и параметром решетки 0,3601 Å состава CoCrCuFeNi произошло в течение τ МА = 10 ч.…”

Section: введение введениеunclassified

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Formation of products upon ignition, combustion and melting of mixtures of high-entropy alloy FeNiCoCrCu with titanium and carbon

Вадченко

Vergunova

Рогачев

et al. 2023

Izv. VUZ. Poroshk. Met.

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The dependence of the ignition temperature, combustion rate and composition of the resulting products on the concentration of Ti + C in mixtures with powder of a high-entropy alloy (HEA) FeNiCoCrCu and the initial mixture of metals forming it (MIX) has been studied. HEA was obtained by mechanical activation (MA) of a mixture of metal powders in argon. At the melting temperature, the high-entropy FeNiCoCrCu alloy decomposes into several phases, but the basis of the HEA alloy, as well as the alloy obtained by melting and crystallizing MIX, is a 5-component phase with an average formula Cu1.2Fe1.4Ni1.4Co1.4Cr. In addition, 5, 4, and 3-component phases with averaged formulas Cu2Ni2Co2Fe2Cr, Cu3Ni3Co2.9Fe2.5Cr, Cu4.8Ni4.5Co4.6Fe4.2Cr, Cu40Fe2Ni4Co2C, Cr12.5Fe3.2Co2.6Ni and Co3.2 Fe3,5 Cr are present in small amounts in the binder. Experiments on the ignition and combustion of mixtures of MIX and HEA with Ti + C were carried out in argon at atmospheric pressure. The combustion rate, ignition temperature, and maximum temperature reached in the thermal explosion of MIX and HEA mixtures with Ti + C increase with increasing Ti + C concentration. Due to the low exothermicity of the mixtures, the experiments were carried out at an initial temperature of 500 °С. At this initial temperature, the combustion limit of the samples occurs when the Ti + C concentration in the HEA and MIX mixtures is less than 30 %. Based on the results of scanning electron microscopy, the volume concentration of the number of titanium carbide (TiC) particles in molten samples was calculated. In an alloy with a HEA binder, the number of TiC particles per unit volume is 1.5-3.0 times greater than in an alloy with a MIX binder, and their size is correspondingly smaller. With an increase in the concentration of Ti + C from 30 to 40 % in a mixture with HEA, the number of TiC particles per unit volume decreases. In a mixture with MIX, the number of TiC particles per unit volume passes through a minimum. This is due to two opposite processes: on the one hand, the probability of the generation of TiC particles increases, on the other hand, their coagulation occurs.

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Section: введение введениеmentioning

confidence: 99%

Section: введение введениеunclassified

Formation of products upon ignition, combustion and melting of mixtures of high-entropy alloy FeNiCoCrCu with titanium and carbon

Вадченко

Vergunova

Рогачев

et al. 2023

Izv. VUZ. Poroshk. Met.

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“…В литературе приведены примеры композиций, в которых матричными материалами являются ВЭС, полученные методом механического сплавления чистых компонентов (CoCrFeNiMn, CoCrFeNiV, CoCrFeNiCu, CoCrFeNiAl), а упрочнение обеспечивают керамические частицы (WC, TiB2, Ti(C,N)) [17,[47][48][49].…”

Section: состав высокоэнтропийных сплавовunclassified

Review of alloys developed using the entropy approach

Bataeva¹,

Ruktuev²,

Иванов³

et al. 2021

Metal Working and Material Science

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This paper provides a review of studies on the development and characterization of high-entropy alloys (HEAs). It is structured in the following way. Alloys’ design strategy based on entropy approach. Expectations and modern perceptions. This section describes the initial principles of multicomponent alloys design which provide stable structure and mechanical properties. It is noted that the role of high mixing entropy in the formation of disordered solid solutions and the suppression of the brittle intermetallic phases formation have been significantly reconsidered over time. Currently, obtaining a single-phase solid solution structure is not the main requirement for HEAs. The composition of HEAs. This section describes some typical multicomponent alloys having different elemental compositions. It is shown, that at present time the most studied alloys are based on 3-d transition elements. Using alloys of this group the possibility of providing both high and low values of strength and ductility is shown. Fabrication methods of HEAs. This section describes the methods for the fabrication of high-entropy alloys. It is noted that the most commonly used methods are based on the melting of the initial materials and its subsequent crystallization. Such methods of HEAs fabrication as powder metallurgy, magnetron sputtering, self-propagating high-temperature synthesis, melt spinning, and diffusion welding are also discussed. Structure of HEAs. This section provides the data on HEAs possessing multiphase structure and containing fine nanosized precipitates. Besides, the studies in which HEAs have been obtained in the form of metallic glasses, carbides, oxides, and borides are reviewed. The factors that can affect the structural state of the multicomponent alloys are discussed. The ambiguity of opinions of different research groups is noted. Properties of HEAs. This section mainly concentrates on the mechanical properties of HEAs. However, some other promising properties of HEAs like high wear resistance and reduced diffusivity are also discussed. Plastic deformation of HEAs. This section describes the evolution of the structure and properties of HEAs caused by thermal and mechanical processing. Characterization methods of HEAs. This section lists the characterization techniques, which are most frequently used to study HEAs. The structure of these alloys is mainly studied by scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, and optical microscopy. The methods for properties measurements are also briefly reviewed. Application of HEAs. This section describes the promising fields of HEAs application. It can be utilized in the aerospace, aircraft, and nuclear industries as well as for car manufacturing, austoelectronics, and in the design of microwave devices. Russian-language publications on HEAs. This section lists the studies, published in the Russian language as well as the thesis, done in Russian universities.

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“…Also, sintered Ti(C,N)-primarily based cermets had been suggested to have advanced oxidation resistance, which may be further stepped forward via the addition of alloyed Cr [41]. Four united cermets comprised by Ti(C,N) as the earthenware stage and four high entropy combinations as the folio stage were synthesized by Obra et al [42]. Mechanical alloying was used to create the four HEAs-CoCrCuFeNi, CoCrFeNiV, CoCrFeMnNi, and CoFeMnNiV-which resulted in the formation of a single (face centred cubic) fcc phase.…”

Section: Introductionmentioning

confidence: 99%

Effect of Processing Routes on Physical & Mechanical Properties of Advanced Cermet System

Verma,

García-Hernández,

Luna-Domínguez

et al. 2024

Preprint

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Present research focus on the effect of different processing routes on physical and mechanical properties of nano Ti(CN) based cermet’s with metallic binders. Tungsten carbide (WC) is added as secondary carbide and Ni-Co are added as metallic binders in nano Ti(CN) based cermet processed via Conventional and Spark Plasma Sintering (SPS). Systematic comparison of composition and sintering conditions for different cermet’s’ systems is done to design the novel composition and sintering conditions. Nano TiCN powder was prepared by 30hr of ball milling. Highest density of >98.5% percent was achieved for SPS processed cermet’s sintered at 1200°C and 1250°C for 3 min. at 60 MPa pressure in comparison to conventionally sintered cermet’s at 1400°C for 1hr with two stage compaction process, uniaxially at 150 MPa and isostatically at 300 MPa pressure respectively. Comparison of XRD analysis of milled powders of different time intervals was done to understand the characteristics of the as received and milled powders. Peak broadening was observed after 5 hr. of ball milling, and it increased till 30hr. Also, peak broadening and refined carbide size was observed in XRD and SEM micrograph of SPS processed cermet. TEM analysis of milled powder showed internal structure having regular periodic arrangement of planes. SEM (BSE) images of all cermets primarily showed three major microstructural phases of core-rim-binder with black, grey and white contrast respectively. In the present sintering conditions high hardness of ~16 GPa and fracture toughness of ~9 MPa m1/2 was obtained for SPS processed cermets sintered at higher temperature.

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Development of Ti(C,N)-based cermets with (Co,Fe,Ni)-based high entropy alloys as binder phase

Cited by 38 publications

References 53 publications

Formation of products upon ignition, combustion and melting of mixtures of high-entropy alloy FeNiCoCrCu with titanium and carbon

Formation of products upon ignition, combustion and melting of mixtures of high-entropy alloy FeNiCoCrCu with titanium and carbon

Review of alloys developed using the entropy approach

Effect of Processing Routes on Physical & Mechanical Properties of Advanced Cermet System

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