Wear mechanisms in high speed steel reinforced with (NbC)p and (TaC)p MMCs

Gordo, E.; Velasco, F.; Antón, N.; Torralba, J. M.

doi:10.1016/s0043-1648(00)00329-x

Cited by 76 publications

(43 citation statements)

References 19 publications

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“…Combining the advantages of Fe alloys for the metal matrix with the interesting properties of NbC would lead to competitive materials for some tool applications. The manufacturing of Fe-NbC based composite materials is normally done by techniques based on the addition of NbC particles to the metal matrix in molten or powder form [16]- [19]. In such cases, the amount of reinforcing phase NbC is limited by the size of the starting powder, interfacial reactions between reinforcements and matrix and by the poor wettability between the reinforcements and the matrix due to surface contamination of the reinforcements.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Cermets based on FeAl–NbC from composite powders: Design of composition and processing

Franco

Costa

Tsipas

et al. 2015

International Journal of Refractory Metals and Hard Materials

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The aim of this work is the design, processing and characterization of a metal-ceramic composite (cermet) with an iron -aluminum alloy as metallic matrix and NbC as ceramic phase. The cermet is obtained from a composite powder containing in situ formed NbCrich precipitates on an iron rich metal matrix. The starting powder was supplied by CBMM (Brazil), and it was produced by a synthesis process under development which introduces other metals such as Al, Si and Ti to the composition. Due to the in situ process, good bonding is expected between the carbide and the matrix. However it is necessary to study the processability of those complex particles and the transformations occurring during sintering to get the final microstructure. Thermodynamic studies by means of ThermoCalc ® software were performed to predict the phases stable with the starting composition and also the influence of Fe and C additions. Samples were produced by uniaxial pressing and vacuum sintering (PS), and also by Field Assisted Hot Pressing (FAHP). The processing parameters for PS processing, that is, sintering temperature and time were based on themodynamic simulations by ThermoCalc ® software together with thermal analysis. The powders were characterized by measuring density, particle size, carbon content and chemical composition; and consolidated samples by density and Vickers hardness. The microstructure and morphology of the powder and consolidated samples was analyzed by SEM. The addition of Fe and both C and Fe to the starting cermet composition provided good results as the final microstructure consisted essentially of NbC and Fe matrix. Abbreviations PS -Pressing and Sintering FAHP -Field Assisted Hot Pressing

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Section: Accepted M Manuscriptmentioning

confidence: 99%

Cermets based on FeAl–NbC from composite powders: Design of composition and processing

Franco

Costa

Tsipas

et al. 2015

International Journal of Refractory Metals and Hard Materials

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“…Hard phases added to the steel matrix were mainly refractory carbides such as NbC, TaC and VC (Gordo et al, 2000). WC-Co (Ban and Shaw, 2002), Cr 2 Al, TiCr 2 , SiC and VC (Abenojar et al, 2002 andAbenojar et al, 2003) were also investigated as a potential reinforcement of the steel matrixes.…”

Section: Case Study -Effect Of the Dispersion Of Nanosized Carbides (mentioning

confidence: 99%

“…On this way, engineers of aerospace, for example, are ever looking for structural materials that have low densities, be stronger, with wear resistance and that have high resistance to corrosion (Gordo et al, 2000). These characteristics combine amazing properties for just one material.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Additives of Nanosized Nb and Ta Carbides on Microstructure and Properties of Sintered Stainless Steel

Gomes¹,

Silva²,

Ferreira³

2012

Sintering - Methods and Products

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“…An improvement of sinterability and also a reinforcement of the base material was obtained by the addition of TiC [9], Cr 3 C 2 and VC [10,11]. Some studies are specific for AISI M2 reinforced by ceramic particles and processed by conventional PM, in which an improvement on mechanical and tribological properties was observed by adding NbC and TaC [12] or by using a tailored carbide phase [13].…”

Section: Introductionmentioning

confidence: 99%

Effect of vanadium carbide on dry sliding wear behavior of powder metallurgy AISI M2 high speed steel processed by concentrated solar energy

Garcı́a

Romero

Herranz

et al. 2016

Materials Characterization

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Mixtures of AISI M2 high speed steel and vanadium carbide (3, 6 or 10 wt.%) were prepared by powder metallurgy and sintered by concentrated solar energy (CSE). Two different powerful solar furnaces were employed to sinter the parts and the results were compared with those obtained by conventional powder metallurgy using a tubular electric furnace. CSE allowed significant reduction of processing times and high heating rates. The wear resistance of compacts was studied by using rotating pin-on-disk and linearly reciprocating ball-on-flat methods. Wear mechanisms were investigated by means of scanning electron microscopy (SEM) observations and chemical inspections of the microstructures of the samples. Better wear properties than those obtained by conventional powder metallurgy were achieved. The refinement of the microstructure and the formation of carbonitrides were the reasons for this.

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Wear mechanisms in high speed steel reinforced with (NbC)p and (TaC)p MMCs

Cited by 76 publications

References 19 publications

Cermets based on FeAl–NbC from composite powders: Design of composition and processing

Cermets based on FeAl–NbC from composite powders: Design of composition and processing

Effect of the Additives of Nanosized Nb and Ta Carbides on Microstructure and Properties of Sintered Stainless Steel

Effect of vanadium carbide on dry sliding wear behavior of powder metallurgy AISI M2 high speed steel processed by concentrated solar energy

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