Processing of AISI M2 high speed steel reinforced with vanadium carbide by solar sintering

Herranz, Gemma; Romero, A. Martínez; Castro, V. de; Rodríguez, Gabriel Peña

doi:10.1016/j.matdes.2013.09.027

Cited by 40 publications

(18 citation statements)

References 25 publications

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“…Compared with the PM HSSs prepared from pre-alloyed powders using HIP [9], SLPS [7,8,26] or other densifying method [14,15,27,28], several crucial issues must be urgently considered and clarified upon DFT steels: 1) the densification behavior via solid state sintering (SSS), 2) the control of carbon, alloying elements and impurity elements (O,…”

Section: Resultsmentioning

confidence: 99%

Direct fabrication of high-performance high speed steel products enhanced by LaB 6

et al. 2016

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A direct fabrication technology (DFT) without smelting has been developed for fabricating sophisticated high speed steel products with low pollution, near-net shaping and short process. The steel consisting of (wt. %): 6.4W, 5.0Mo, 4.2Cr, 3.1V, 8.5Co and 1.28C, was fabricated as exemplary material. The activated and reactive sintering of green compacts under vacuum with low activation energy, redox reaction enhanced diffusion and the construction of concentration gradient of alloying elements around pores, promotes the nearly full densification (>99.40%). Also, the DFT steels show high purity and superior mechanical properties. Minor strengthening agent LaB 6 (0.1 wt. %), which is easily to be accurately introduced in DFT, obviously increases the hot hardness, temper resistance, bend strength and toughness of DFT M3:2. The strengthening effect of boron atoms and La-rich complexes are proposed to directly result in the high hot hardness and temper resistance of LaB 6 containing steel.

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Section: Resultsmentioning

confidence: 99%

Direct fabrication of high-performance high speed steel products enhanced by LaB 6

et al. 2016

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“…5c and 7), which was identified as carbonitrides type M (C,N) [20]. The formation of this phase could be due to an incomplete transformation of the carbides into nitrides.…”

Section: Microstructurementioning

confidence: 99%

“…CSE is clean, renewable and pollutant free. It comes from a natural and inexhaustible energy source and shows a clear activator effect on sintering process [19,20]. This fact can be explained looking at the solar radiation absorbed for metallic materials.…”

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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“…These properties of the tool material can be adjusted within a relatively wide range by the parameters of the heat treatment [5]. Optimum heat treatment parameters ensure that the highest hardness, strength and temperability are achieved at the same time [6]. Determination of the optimum austenitising temperature requires special attention because it regulates a number of important processes.…”

Section: Introductionmentioning

confidence: 99%

Influence of Heat Treatment on Content of the Carbide Phases in the Microstructure of High-Speed Steel

Jaworski

Kluz

Trzepieciński

2017

Archives of Foundry Engineering

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This article presents the results of investigations of the effect of heat treatment temperature on the content of the carbide phase of HS3-1-2 and HS6-5-2 low-alloy high-speed steel. Analysis of the phase composition of carbides is carried out using the diffraction method. It is determined that with increasing austenitising temperature, the intensification of dissolution of M6C carbide increases. As a result, an increase in the grain size of the austenite and the amount of retained austenite causes a significant reduction in the hardness of hardened steel HS3-1-2 to be observed. The results of diffraction investigations showed that M7C3 carbides containing mainly Cr and Fe carbides and M6C carbides containing mainly Mo and W carbides are dissolved during austenitisation. During austenitisation of HS3-1-2 steel, the silicon is transferred from the matrix to carbides, thus replacing carbide-forming elements. An increase in a degree of tempering leads to intensification of carbide separation and this process reduce the grindability of tested steels.

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Processing of AISI M2 high speed steel reinforced with vanadium carbide by solar sintering

Cited by 40 publications

References 25 publications

Direct fabrication of high-performance high speed steel products enhanced by LaB 6

Direct fabrication of high-performance high speed steel products enhanced by LaB 6

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

Influence of Heat Treatment on Content of the Carbide Phases in the Microstructure of High-Speed Steel

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