The addition of anadium and nitride alloy on the solidificationstructure and hardness of M2 high-speed steel

Shang Guangmin; Liu Hongyu; Deng Weijie; Li You; Sun Boxiang; Li Ruilin

doi:10.7513/j.issn.1004-7638.2024.02.026

Volume 45 Issue 2

Feb. 2024

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Shang Guangmin, Liu Hongyu, Deng Weijie, Li You, Sun Boxiang, Li Ruilin. The addition of anadium and nitride alloy on the solidificationstructure and hardness of M2 high-speed steel[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(2): 182-189. doi: 10.7513/j.issn.1004-7638.2024.02.026

Citation:

Shang Guangmin, Liu Hongyu, Deng Weijie, Li You, Sun Boxiang, Li Ruilin. The addition of anadium and nitride alloy on the solidificationstructure and hardness of M2 high-speed steel[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(2): 182-189. doi: 10.7513/j.issn.1004-7638.2024.02.026

Citation:

Shang Guangmin, Liu Hongyu, Deng Weijie, Li You, Sun Boxiang, Li Ruilin. The addition of anadium and nitride alloy on the solidificationstructure and hardness of M2 high-speed steel[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(2): 182-189. doi: 10.7513/j.issn.1004-7638.2024.02.026

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The addition of anadium and nitride alloy on the solidificationstructure and hardness of M2 high-speed steel

doi: 10.7513/j.issn.1004-7638.2024.02.026

1.
College of Science，Wuhan University of Science and Technology, Wuhan 430065, Hubei, China
2.
Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Wuhan 430065, Hubei, China
3.
Hubei Shili Mold Materia Company Limited, Ezhou 436055, Hubei, China

Received Date: 2024-01-03
Available Online: 2024-05-14
Publish Date: 2024-04-30

Abstract

Abstract

In order to fully exploit the potential role of vanadium-Nitride alloy on high-speed steel, the evolution of solidification structure and hardness of M2 high-speed steel with vanadium-Nitride alloy addition had been investigated by using a rapid solidification melt-sampling apparatus, where the vanadium-nitride alloy was added into the standard M2 high-speed steel specified by GB/T 9943-2008 , an experimental exploration was conducted. Thermo-Calc and JMatPro software, in combination with optical microscopy, scanning electron microscopy, X-ray diffraction apparatus, and hardness tester, were employed for the observation of substrate grain morphologies, sizes, and distributions at various locations subsequent to the solidification of M2 high-speed steel with different N content (0.0365%, 0.0165%). Additionally, observations were made on carbide types, morphologies, sizes, and distributions, while hardness variations were measured. The results indicate that the addition of vanadium-nitride alloy can help refining the size of substrate grains. In the case of the 0.0365% N experimental steel, equiaxed grains were observed at the center, 1/2 radius, and periphery; whereas the 0.0165% N experimental steel exhibited columnar grains at 1/2 radius. The addition of vanadium-nitride alloy could not alter the precipitation type of carbides during the solidification process, but it facilitated the fragmentation of carbides. The addition of vanadium-nitride alloy resulted in higher hardness. The increased hardness in the case of the 0.0365% N experimental steel is attributed to the refinement of substrate grains and an augmented quantity of M (C, N) particles.
- M2 high-speed steel,
- vanadium-nitride alloy,
- solidification microstructure,
- carbides,
- hardness.

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References(24)

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