Properties of High-Speed Steels Produced by Powder Metallurgy

Takigawa, H.; Manto, H.; Kawai, Nobuyasu; Homma, Katsuhiko

doi:10.1179/pom.1981.24.4.196

Cited by 22 publications

(7 citation statements)

References 1 publication

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“…To achieve better performance in HSS manufactured via PM, the size of the raw powder used must be reduced. In this study, raw powder was subjected to water atomization (PF-5F; Epson Atmix Co., Ltd., Hachinohe, Japan), as the powder yielded from this method is finer than that produced via gas atomization [ 27 ]. The size of the raw powder was #4000–#3000, with an average particle size of approximately 5 μm.…”

Section: Methodsmentioning

confidence: 99%

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

2022

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1.2C–4Cr–4Mo–10W–3.5V–10Co–Fe high-speed steel (JIS SKH57; ISO HS10-4-3-10) is often manufactured via casting and forging. By applying powder metallurgy, the properties of the abovementioned material can be improved. In this study, the effects of sintering conditions on the formation of precipitates and pores are evaluated. Additionally, strength with and without hydrostatic pressure during sintering is evaluated via static bending and impact tests. Sintering via hot isostatic pressing (HIP) at 1463 K can effectively eliminate pores and prevent the coarsening of precipitates. Toughness and strength improved by 50% by applying HIP.

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Section: Methodsmentioning

confidence: 99%

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

2022

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“…PM techniques address some issues related to high speed steel technology, especially those related to obtaining products with improved distribution of fine carbides. These result from the increased cooling rates during solidification and highly alloyed compositions, and which cannot be attained by conventional technique [7][8][9][10][11] .…”

Section: Literature Reviewmentioning

confidence: 99%

Transverse rupture strength of a PM tool steel

Filho

Neves

et al. 2005

Mat. Res.

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Powder Metallurgy has been reported as a suitable alternate processing route for the manufacture of tool steels. The advantage of this technique is in being able to obtain a refined and more uniform microstructure that improves properties such high wear resistance and toughness. A molybdenum containing AISI M3:2 tool steel, (trade name Sinter 23), manufactured from spherical gas-atomized powders by hot isostatic pressing followed by hot working was tested in three-point bending tests after various heat treatments. Transverse rupture strength (TRS) samples were cut and heat treated at four distinct austenitizing temperatures. Each austenitizing temperature was combined with three tempering temperatures, giving a total of twelve different hardening conditions. Hardness tests were carried out to establish correlations among the effectiveness of heat treatment, the hardness values and the TRS results. At least five parallel samples were tested in each heat treatment condition.

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“…The as-annealed products of tool steels are soft and workable to the desired shapes of tooling parts which acquire their strength, hot hardness, gouging and fatigue resistance by special heat treatment processes [2,3]. Near-net shape cast tooling is also applied to form cutting tools which also acquire their properties after heat treatment and cutting edge adjustments [4,5]. Higher abrasive and adhesive resistance of such cutting tools are obtained by tool alloys containing Carbide forming elements as tungsten, vanadium, cobalt and molybdenum as in die and high speed steel tools [6,7].…”

Section: Introductionmentioning

confidence: 99%

Innovative Martensite-Free Precipitation Hardened Tool Steel Composites with Improved Fracture Toughness

2016

IJNN

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Good combinations between strength and toughness are always the aim of all researchers working in the field of material science. Unfortunately strength and toughness of materials are alloys counter acting properties. However, carbon contents in the steel define to a great extent its strength and toughness. In this research an effort is paid to produce steel alloy composites that can give higher strength together with good toughness without alloying with carbon. The mechanism of strengthening in Iron-Cobalt-Tungsten composite alloys with variations in Co and W contents is investigated. The fracture toughness, hardness, and strength are measured for all alloy composites under investigation. The changes in microstructures after heat treatment are emphasized using metallurgical microscopy and SEM-aided with EDX analyzing unit.

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Properties of High-Speed Steels Produced by Powder Metallurgy

Cited by 22 publications

References 1 publication

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

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

Transverse rupture strength of a PM tool steel

Innovative Martensite-Free Precipitation Hardened Tool Steel Composites with Improved Fracture Toughness

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