Precipitation Behaviors of Carbides in High Speed Steel during ESR and Heat Treatment

The microstructure and carbides evolution of high-speed steel after electroslag remelting and solution treatment were studied. The thermodynamic precipitation mechanism of carbides in solid phase was discussed and the characteristic parameters of carbides in different processes were also investigated. The results show that there were large lamellar and fibrous Mo2C and a small amount of VC in the ESR ingot. Mo2C are metastable carbides, which can be decomposed into VC and Fe2Mo4C during the solution treatment. The average diameter of the carbides is reduced to 1.28 μm and the space distance is reduced to 3.23 μm after forging and hot rolling, which means carbides are completely spheroidal and dispersed in matrix.

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Experimental investigation on heat treatment of a high-speed steel for hot rolling roll mill

Materialwissenschaft und Werkstofftechnik ◽

10.1002/mawe.201000577 ◽

2010 ◽

Vol 41 (3) ◽

pp. 170-176 ◽

Cited By ~ 8

Author(s):

X. Li ◽

Z. Du ◽

H. Fu ◽

Z. Feng ◽

H. Zhao

Keyword(s):

Heat Treatment ◽

Experimental Investigation ◽

Hot Rolling ◽

High Speed ◽

High Speed Steel ◽

Rolling Roll ◽

Roll Mill

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UNS T12001

Alloy Digest ◽

10.31399/asm.ad.ts0495 ◽

1989 ◽

Vol 38 (1) ◽

Keyword(s):

Heat Treatment ◽

Physical Properties ◽

Tool Steel ◽

High Speed ◽

High Speed Steel ◽

Heat Treating ◽

General Purpose ◽

Steel Mills

Abstract UNS T12001 is a general-purpose, tungsten, high-speed steel containing nominally 18% tungsten, 4% chromium and 1% vanadium. It is suitable for practically all high-speed applications. This steel has been the standard of the industry for many years because of its cutting ability, ease of heat treatment and minimum tendency to decarburize. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-495. Producer or source: Tool steel mills.

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CPM REX 25

Alloy Digest ◽

10.31399/asm.ad.ts0365 ◽

1980 ◽

Vol 29 (7) ◽

Keyword(s):

Heat Treatment ◽

High Speed ◽

High Speed Steel ◽

High Hardness ◽

Heat Treating ◽

High Speeds ◽

Aisi Type ◽

Tool Performance ◽

End Mills ◽

Machining Operations

Abstract CPM REX 25 is a super high-speed steel made without cobalt. It is comparable to AISI Type T15 cobalt-containing high-speed steel in response to heat treatment, properties, and tool performance. CPM REX 25 is recommended for machining operations requiring heavy cuts, high speeds and feeds, and difficult-to-machine materials of high hardness and abrasion resistance. Typical applications are boring tools, drills, gear cutters, punches, form tools, end mills and broaches. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-365. Producer or source: Crucible Materials Corporation.

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Hardening of Selective Laser Melted M2 Steel

10.31399/asm.cp.ht2021p0007 ◽

2021 ◽

Author(s):

Mei Yang ◽

Yishu Zhang ◽

Haoxing You ◽

Richard Smith ◽

Richard D. Sisson

Keyword(s):

Heat Treatment ◽

High Speed ◽

Cutting Tools ◽

High Speed Steel ◽

High Hardness ◽

Steel Part ◽

X Ray Diffraction ◽

X Ray ◽

Heat Treated ◽

Near Net Shape

Abstract Selective laser melting (SLM) is an additive manufacturing technique that can be used to make the near-net-shape metal parts. M2 is a high-speed steel widely used in cutting tools, which is due to its high hardness of this steel. Conventionally, the hardening heat treatment process, including quenching and tempering, is conducted to achieve the high hardness for M2 wrought parts. It was debated if the hardening is needed for additively manufactured M2 parts. In the present work, the M2 steel part is fabricated by SLM. It is found that the hardness of as-fabricated M2 SLM parts is much lower than the hardened M2 wrought parts. The characterization was conducted including X-ray diffraction (XRD), optical microscopy, Scanning Electron Microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS) to investigate the microstructure evolution of as-fabricated, quenched, and tempered M2 SLM part. The M2 wrought part was heat-treated simultaneously with the SLM part for comparison. It was found the hardness of M2 SLM part after heat treatment is increased and comparable to the wrought part. Both quenched and tempered M2 SLM and wrought parts have the same microstructure, while the size of the carbides in the wrought part is larger than that in the SLM part.

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