Sinterability Study of PM M2 and T15 High Speed Steels Reinforced with Tungsten and Titanium Carbides

Torralba, J. M.; Cambronero, L. E. G.; Ruiz‐Prieto, J. M.; Neves, Maurício David Martins das

doi:10.1179/pom.1993.36.1.55

Cited by 33 publications

(18 citation statements)

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“…2,3) Additionally, many investigations have revealed that reinforced MC carbide (TaC, VC, NbC and TiC) in ferrous metal matrix will efficiently enhance the mechanical performance. [4][5][6] Among them, tantalum carbide (TaC) has excellent hardness (1 800 HV 50 kgf·mm − 2 ), high melting temperatures (3 422°C) and good chemical and thermal stability with Fe-based alloys; therefore, it shall be a great option for reinforcing in Vanadis 4 tool steels. 7) One of the main advantages of P/M procedure is its flexibility to prepare different powder mixtures admixing different hard and/or soft particulate phases to the basic high-alloyed steel powder.…”

Section: Introductionmentioning

confidence: 99%

Microstructures and Mechanical Properties of TaC Added to Vanadis 4 Tool Steel through Vacuum Sintering and Heat Treatments

Huang¹,

Chang

Yeh

2017

ISIJ International

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In this study, different amounts of TaC powders (10, 15 and 20 mass%) are mixed and added to Vanadis 4 tool steel powder. The composite powders are sintered at 1 250, 1 300 and 1 325°C for 1 h, respectively. After that, a series of heat treatments is performed to determine the optimal parameters of the Vanadis 4 composites. The experimental results show the optimal vacuum sintering temperature for the Vanadis 4 composites to be 1 300°C. The Vanadis 4 specimens with a 10% TaC added possess the highest transverse rupture strength (TRS) value of 1 974.2 MPa and a suitable hardness (82.6 HRA). When the optimally sintered specimens of the Vanadis 4 composites then undergo a heat treatment, the TRS shows a significant increase to 2 069.4 MPa, while the hardness declines slightly to 81.5 HRA. In addition, the microstructural evaluation reveals that the plate-shaped carbides (M 7 C 3 ) located on the grain boundaries disappear after the TaC powders are added and that clustered TaC carbides appear in the grain boundaries instead. Meanwhile, with TaC as the nucleation sites of the VC carbides, the result is the generating of VC carbides in the grain boundaries. Moreover, the VC carbides decompose and re-precipitate the refined carbides (Fe 3 C), which are uniformly distributed within the grains. The results also show that heat treatment effectively improves the microstructure and strengthens the Vanadis 4 composites.

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Section: Introductionmentioning

confidence: 99%

Microstructures and Mechanical Properties of TaC Added to Vanadis 4 Tool Steel through Vacuum Sintering and Heat Treatments

Huang¹,

Chang

Yeh

2017

ISIJ International

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“…On the other hand, it is known that if exists an insufficient bonding between the reinforcement and the matrix or an unfavorable size and distribution of hard phases inside the matrix, the high density of carbides produces an increase of wear rate due to the large amount of loss material when the carbides are removed [4,5].…”

Section: Wear Mechanismsmentioning

confidence: 99%

“…Several studies based on HSS composites processed by PM have been found. The additions of alumina or carbides to HSS [4,5] resulted in an important improvement of sinterability and wear behavior. In this regard the microstructure presents a great influence in the wear behavior of the material, so the addition of TiC carbides to a matrix of high speed steel M3 Class 2 (HSS M3/2) arrested growth and propagation of cracks [6], enhanced the wear resistant of the steel [7] and increased the load carrying capacity of the steel [8].…”

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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“…Metal matrix composites were produced by the infiltration technique. Since technological and economical considerations are equally important, infiltration of high-speed steel based skeleton with liquid copper has proved to be a suitable technique whereby fully dense material is produced at low cost [1][2][3]5]. An ability to press and sinter to near net shape requires good compressibility of the powder.…”

Section: Introductionmentioning

confidence: 99%

High speed steel based composites with iron additions

Madej¹

2021

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Attempts have been made to describe the influence of the production process parameters and additions of iron powders on properties of copper infiltrated HSS based composites. The powder compositions used to produce skeletons for further infiltration were M3/2, M3/2 + 20 % Fe and M3/2 + 50 % Fe. The powders were cold pressed at 800 MPa. The infiltration process was carried out in vacuum. Both green compacts and preforms sintered for 60 min at 1150• C in vacuum were contact infiltrated with copper to yield final densities exceeding 97 % of the theoretical value.The as-infiltrated composites were tested for Brinell hardness and bending strength, and subjected to wear tests performed by block-on-ring wear tester. From the analysis of the obtained results it has been found that the mechanical properties are mainly affected by the manufacturing route and composition of porous skeletons used for infiltration. Considerable differences in hardness between materials obtained from the two infiltration routes have been observed, with lower wear rates achieved after direct infiltration of green compacts.K e y w o r d s : high speed steel,

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Sinterability Study of PM M2 and T15 High Speed Steels Reinforced with Tungsten and Titanium Carbides

Cited by 33 publications

References 1 publication

Microstructures and Mechanical Properties of TaC Added to Vanadis 4 Tool Steel through Vacuum Sintering and Heat Treatments

Microstructures and Mechanical Properties of TaC Added to Vanadis 4 Tool Steel through Vacuum Sintering and Heat Treatments

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

High speed steel based composites with iron additions

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