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

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...

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Bibliographic Details
Published in:Materials 2022-03, Vol.15 (6), p.2300
Main Authors: Furuya, Kazuyuki, Jitsukawa, Shiro, Saito, Takayuki
Format: Article
Language:English
Subjects:
Chemical precipitation
Chromium
Cutting tools
Forging
High speed tool steels
Hot isostatic pressing
Hydrostatic pressure
Impact tests
Mechanical properties
Methods
Molybdenum
Polyvinyl alcohol
Powder metallurgy
Precipitates
Sintering
Sintering (powder metallurgy)
Tungsten
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Summary: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.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15062300