Application of the Sinter-HIP Method to Manufacture Cr–Mo–W–V–Co High-Speed Steel via Powder Metallurgy

Furuya, Kazuyuki; Jitsukawa, Shiro; Saito, Takayuki

doi:10.3390/ma15062300

Cited by 12 publications

(3 citation statements)

References 26 publications

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“…Prior to discharge, aluminum was added for deoxidation. [21,22] The molten steel was then cast into a sand mold to cool and form a 25 kg ingot. A sample block of φ20 Â 50 mm was extracted, designated as Z5.…”

Section: Materials Preparationmentioning

confidence: 99%

Fabrication and Analysis of the Wear Properties of High‐Vanadium High‐Speed Steel through Spark Plasma Sintering

Tong,

Wei,

Chen

2024

steel research int.

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High‐vanadium high‐speed steel (HVHSS), known for its exceptional wear resistance, is widely used in industries such as steel production, bearing manufacturing, and the manufacture of cutting tools and high‐end components. To address the need for improved performance under challenging service conditions, the fabrication of HVHSS is investigated using spark plasma sintering (SPS) as an alternative to traditional casting methods. The research focuses on analyzing the microstructural changes in HVHSS samples produced by SPS under various sintering temperatures. These samples are then compared with those of cast HVHSS in terms of their microstructures, mechanical properties, and wear resistance. The study found that at a sintering temperature of 900 °C, the SPS‐fabricated HVHSS achieved a relative density of 98.1%. The fine and evenly dispersed carbides (mainly M7C3 and VC) in the matrix increased the microscopic hardness to 654.1 HV, which is higher than that of the cast sample. Notably, the wear resistance is significantly enhanced, showing increases of 15.48 cm−3 and ≈18% in absolute and relative terms, respectively. These results show that SPS fabrication is a major technique for enhancing the wear resistance and optimizing the microstructure of HVHSS.

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Section: Materials Preparationmentioning

confidence: 99%

Fabrication and Analysis of the Wear Properties of High‐Vanadium High‐Speed Steel through Spark Plasma Sintering

Tong,

Wei,

Chen

2024

steel research int.

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show abstract

“…The HSS produced by powder metallurgy (PMHSS) can effectively solve the problem of structure segregation and is conducive to the uniform dispersion of carbide in the matrix, with the advantages of uniform structure, small grains and less inclusions, greatly improving the mechanical properties, and service life. [10][11][12][13] The PMHSS is first to prepare raw material powder, and subsequent powder forming, sintering, and densification.…”

Section: Introductionmentioning

confidence: 99%

Characteristic analysis of high-speed steel powder prepared by gas atomisation

Zhang,

Lu,

Hao

et al. 2024

Powder Metallurgy

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The performance of high-speed steel (HSS) powder is a prerequisite for the preparation of high-performance powder metallurgy HSS. The physical properties, microstructure, and solidification characteristics of HSS powder prepared by nitrogen gas atomisation were systematically studied and analysed in detail. For the atomised TPM558 HSS powder, the morphology is spherical and the particle size distribution is wide. The smooth small particles of satellite powder attach to the surface of large particles. Shrinkage pits caused by solidification shrinkage exist on the surface of large particles. The average cooling rate is between 104 and 106 K·s−1, with the increase of cooling rate, the powder surface tends to be smooth, and the grain structure is transformed in the order of cellular to dendritic to radial. The single powder particle surface shows fine-equiaxed grains, while the internal presents columnar grains. The crystalline phases of the powder are austenite, ferrite, martensite, and carbide, and the carbide includes MC carbide with face-centred structure and M2C carbide with hexagonal structure. The average nano-hardness of the powder is 9.93 GPa, resulting in poor formability, and it can be pressed and formed only after adding binder.

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“…Given its outstanding hardness and wear resistance throughout the working process, high-speed steel (HSS) is an essential industrial material for the production of sophisticated cutting tools and high-temperature bearings (Xiang et al, 2020;Zhang et al, 2021;Furuya et al, 2022;Wang et al, 2022;Xu et al, 2022). One of the advantages of HSS over hard metals and ceramic materials is its ability to achieve the complicated shapes with the necessary and desirable bending strength.…”

Section: Introductionmentioning

confidence: 99%

Effects of sintering temperatures on the microstructure and mechanical properties of S390 powder metallurgy high-speed steel

Wang

Chen

et al. 2023

Front. Mater.

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High-performance complex gear cutters and high-temperature bearings are just some of the applications where high-speed steels (HSSs) shine as a preferred material choice owing to their high hardness and outstanding wear resistance. In this work, the effects of sintering temperature on the microstructure and mechanical properties of S390 HSS prepared via spark plasma sintering (SPS) were investigated with a range of sintering temperatures from 930°C to 1,090°C, a uniaxial pressure of 50 MPa, and a holding time of 5 min. The results demonstrated that the improvements in density, hardness, red hardness, and three-point bending strength were confirmed as the sintering temperature increased from 930°C to 1,090°C. Temperature-induced microstructure evolutions were assessed for their contribution to property enhancement, such as powders with varying dimensions and carbides with diverse morphology and diameter. The specimen with the best comprehensive mechanical properties (67.1 HRC and 1,196.67 MPa) was prepared at 1,050°C via SPS. The wear coefficients decreased as the sintering temperature increased, and the observation results of worn surfaces of test pins confirmed that abrasive wear and oxidation wear dominated the wear experiments. Furthermore, the wear mechanism of dense and porous SPS HSS was illustrated and analyzed in terms of the debris and trapped carbides.

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Application of the Sinter-HIP Method to Manufacture Cr–Mo–W–V–Co High-Speed Steel via Powder Metallurgy

Cited by 12 publications

References 26 publications

Fabrication and Analysis of the Wear Properties of High‐Vanadium High‐Speed Steel through Spark Plasma Sintering

Fabrication and Analysis of the Wear Properties of High‐Vanadium High‐Speed Steel through Spark Plasma Sintering

Characteristic analysis of high-speed steel powder prepared by gas atomisation

Effects of sintering temperatures on the microstructure and mechanical properties of S390 powder metallurgy high-speed steel

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