Nature of the high hardness of P/M high-speed steels

Mukhin, G. G.; Короткова, Л. П.

doi:10.1007/bf00772750

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…Owing to the rapid quenching of droplets in the atomisation process, the solidification of developing microvolumes is carried out at the non-equilibrium conditions and consequently the changes in the character of solidification microstructure occur [5][6][7][8][9][10]. Microstructures and phase composition of classical tool steels of ledeburite type prepared by gas atomisation process have been studied and reported in several works [11][12][13][14][15][16]. Relatively less attention has been devoted to the analysis of the rapidly solidified (RS) powders from new tool materials with the increased content of vanadium and carbon [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Solidification microstructures in the rapidly solidified powder of high alloyed V–Cr tool steel

Kusý

Čaplovič

Grgac

et al. 2004

Journal of Materials Processing Technology

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Section: Introductionmentioning

confidence: 99%

Solidification microstructures in the rapidly solidified powder of high alloyed V–Cr tool steel

Kusý

Čaplovič

Grgac

et al. 2004

Journal of Materials Processing Technology

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Influence of production technology on the structure and properties of powder high-speed steels

Korotkov

Короткова

Laschinina

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Powder high-speed steels are a new group of tool materials with enhanced operational capabilities compared to steels made using traditional technology. The paper presents an assessment of the impact of powder steel production technology on their structure and properties. The studies are carried out on the example of two grades of experimental powder steels - R7M5F2-MP and M5F5-MP in three directions: the influence of compacting technology on the structure and properties of powder steels; development of optimum modes of hardening heat treatment; improving the quality control methodology of powder high-speed steels at the main stages of their production technology. A comparative analysis on the quality of the experimental powder high-speed steels depending on the chemical composition and various schemes for compacting workpieces from atomized powder is carried out. As a result of studies, the influence of hardening heat treatment modes on the phase composition, structure and basic properties of powder high-speed steels is established. Recommendations on hardening thermal working regimes to ensure the optimum ratio between hardness and heat resistance of steels are developed. Studies have shown feasibility of using powder high-speed steels (including domestic ones).

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Influence of production technology of powder high-speed steels on the complex of formed properties

Короткова

Korotkov

2022

Izv. vysš. učebn. zaved., Čern. metall.

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The authors analyzed the state of tool production in Russia. The main manufacturing companies and the main brands of materials used in the production of domestic tools are highlighted. Powder high-speed steels are practically not used in the domestic market, but they are widely distributed in the foreign market of tool steels due to their significant advantages in terms of basic and technological properties (including the possibility of using high-carbon and high-alloy high-speed steels). There is a new group of economically alloyed tungsten-free high-speed steels with a high content of carbon and vanadium, which are practically impossible to manufacture and apply in our traditional technology due to low technological properties. The authors give recommendations on the technology of manufacturing such steels by powder metallurgy and on the modes of their heat treatment. The paper studies a set of properties of these steels, including: basic mechanical properties (hardness, bending strength, toughness, and heat resistance), basic technological properties (pressure, cutting, grinding) and operational properties (evaluated by tool durability during turning). Structural and phase compositions of the steels and their influence on the basic and technological properties were investigated. The compaction mode affects the density of the billets. The paper presents distribution of alloying elements in the microstructure of powder high-speed steel and results of their relative grindability. Also the durability of tools was tested. There are significant advantages of high-carbon high-vanadium high-speed steels, especially in terms of technological properties, compared with traditional high-speed steels. It is possible to produce high-alloy tool steels using inexpensive carbide-forming alloying elements. The steels under consideration can be used to manufacture a wide range of tools, including hot-forming die tools. The use of powder technology opens up the prospect of developing universal economically alloyed powder tool steels.

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Nature of the high hardness of P/M high-speed steels

Cited by 4 publications

References 2 publications

Solidification microstructures in the rapidly solidified powder of high alloyed V–Cr tool steel

Solidification microstructures in the rapidly solidified powder of high alloyed V–Cr tool steel

Influence of production technology on the structure and properties of powder high-speed steels

Influence of production technology of powder high-speed steels on the complex of formed properties

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