Microstructure and Mechanical Properties of Hot Work Tool Steel Matrix Composites Produced by Hot Isostatic Pressing

Pagounis, E.; Talvitie, M.; Lindroos, V.K.

doi:10.1179/pom.1997.40.1.55

Cited by 49 publications

(24 citation statements)

References 12 publications

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“…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]. 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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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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“…Most of the work on Fe-based composites has involved TiC reinforcement [2][3][4][5][6]. ZrC possesses a high hardness, high melting point and a NaCl type structure like TiC.…”

Section: Introductionmentioning

confidence: 99%

Processing and characterization of ZrC-reinforced steel-based composites

Bandyopadhyay

Das

2006

Journal of Materials Processing Technology

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“…[2,3,4,5] They were investigated by other research groups as well. [6,7,8] The materials are produced by mixing gas atomized high alloyed tool steel powders, e.g. D7, with hard particles (carbides, nitrides or borides).…”

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confidence: 99%

Sintering of High Wear Resistant Metal Matrix Composites

Weber

Theisen

2007

Adv Eng Mater

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Particle reinforced metal matrix composites (MMC) based on cold work tool steels are increasingly used as wear resistant materials. Superior wear properties compared to commonly used wear resistant materials justify their application. Usually such materials are produced by means of powder metallurgy (PM) and hot isostatic pressing (HIP), a comparatively cost-intensive process. Against this background a sintering route based on super solidus liquid phase sintering (SLPS) was developed to obtain MMC with properties comparable to those produced by means of HIP. The sintering route is more flexible concerning production and also much more cost-efficient. The sintered MMC are composed of a high alloyed cold work tool steel matrix with admixed coarse hard particles. Hard particles with low reactivity towards iron like titanium carbide (TiC) can be processed as well as such with high reactivity, e.g. fused tungsten carbide (WC/ W 2 C).Wear resistant materials are produced by ingot-as well as powder-metallurgy (PM). All of these materials contain hard phases which, if they are harder than the affecting abrasives, improve the wear resistance significantly. Especially in the mineral and mining industry, white cast irons are widely used against sliding wear of minerals. Under certain conditions, metal matrix composites (MMC) based on hardenable steel matrices with embedded hard particles exhibit a much higher durability than cast materials. [1] A typical application are powdermetallurgically cladded components of high pressure roller presses in the mineral industry. These PM-MMCs were subject of extensive scientific work at the chair of materials technology of Ruhr-University Bochum (Germany) in the last years. [2,3,4,5] They were investigated by other research groups as well. [6,7,8] The materials are produced by mixing gas atomized high alloyed tool steel powders, e.g. D7, with hard particles (carbides, nitrides or borides). The hard particle size can be varied to a large extent and thus be adapted to the tribological system. This is one of the main advantages of PM-MMC in comparison to cast alloys which contain hard phases of a volume fraction, composition and size as determined by solidification parameters and overall composition. Furthermore, the type of hard particles in PM-MMC can be chosen without any restrictions. The powder mixture is subsequently filled into a gas-tight HIP capsule made of sheet metal and consolidated at a temperature between 1000°C and 1200°C at a pressure of 100-200 MPa. After HIP the capsule has to be removed by machining.However, there are some disadvantages of wear resistant PM-MMC. First of all, the production is much more cost-intensive compared to cast materials due to expensive metal and carbide powders and necessary handling operations like classification and mixing. In addition, the densification by hot isostatic pressing raises costs because special gas-tight capsules have to be manufactured.In this context it seems to be advantageous to process wear resistant MMC by sintering. Especi...

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Microstructure and Mechanical Properties of Hot Work Tool Steel Matrix Composites Produced by Hot Isostatic Pressing

Cited by 49 publications

References 12 publications

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

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

Processing and characterization of ZrC-reinforced steel-based composites

Sintering of High Wear Resistant Metal Matrix Composites

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