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Fe-C-Cr-W-Mo-Mn-V-Si-Ni high carbon medium-alloy steel

A technology of fe-c-cr-w-mo-mn-v-si-ni, alloy steel, applied in the field of alloy steel, can solve the problem of difficult refinement, strong toughness, fatigue resistance and fracture, affecting the performance of medium alloy steel And other issues

Inactive Publication Date: 2012-06-27
SHENYANG UNIV
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Problems solved by technology

However, high-carbon medium-alloy steel may cause carbides to aggregate and grow, which is not easy to refine, and has a certain impact on the steel's strength, toughness, fatigue resistance and fracture resistance. The volume increases, and the tempering temperature needs to be increased to promote the decomposition of retained austenite, which reduces the hardness and affects the performance of medium alloy steel

Method used

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Embodiment Construction

[0009] The present invention will be described in detail below in conjunction with examples.

[0010] According to the calculation method of electronic and atomic level calculation, the present invention has the effect of changing the content of C, Si, Ni, etc. in the multi-element alloy steel on the binding energy of the alloy, combining the performance target requirements, and designing a structure that can be quenched at a low temperature and has a microstructure A high-carbon medium-alloy tool and die steel with a certain amount, size and distribution of fine carbides, as well as high hardness and toughness, to meet the performance requirements.

[0011] On the premise of referring to the composition of the previous high-carbon medium alloy steel, keeping the alloy composition of the carbide forming elements and the process parameters unchanged, the quantum chemistry program combined with the interatomic interaction potential is used to calculate the matrix martensite unit cell ...

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Abstract

A Fe-C-Cr-W-Mo-Mn-V-Si-Ni high carbon medium-alloy steel relates to an alloy steel. The alloy steel is determinated according to matrix martensite cell binding energy calculation, yield strength prediction, quenching and tempering hardness calculation, toughness estimation and non-carbide forming elements alloy components by the use of quantum chemistry procedure combined with interatomic potentials. The alloy steel contains the following components of: by weight, 93.08% of Fe, 0.56% of C, 1.42% of Cr, 2.21% of W, 0.95% of Mo, 0.34% of Mn, 0.53% of V, 0.62% of Si and 0.29% of Ni. The alloy steel can be quenched at a low temperature, has carbides with fine microstructure distribution, simultaneously has high hardness and toughness, and is a high carbon medium-alloy tool and die steel which can satisfy the demand of using performance.

Description

Technical field [0001] The invention relates to an alloy steel, in particular to a Fe-C-Cr-W-Mo-Mn-V-Si-Ni high-carbon medium alloy steel. Background technique [0002] Impact-resistant tool steel has a wide range of uses, such as punches, chisels, stamping films, shearing tools and impact cutting blades, etc. It must have high impact resistance and high hardness, as well as high wear resistance and Good heat resistance. 5CrW2Si and 6CrW2Si steels are typical impact-resistant tool steels. However, under some application conditions, wear resistance or heat resistance is obviously insufficient, and they are often replaced by high-alloy hot-work die steels, while foreign low- and medium-alloy impact-resistant tools There are many types of steel. In order to improve the strength, wear resistance and tempering resistance of high-carbon low-alloy steel, it is often considered to increase its alloy content to make it a high-carbon medium-alloy steel. However, high-carbon medium-alloy ...

Claims

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Application Information

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IPC IPC(8): C22C38/46C21D1/18C21D11/00
Inventor 戴玉梅马永庆张洋
Owner SHENYANG UNIV
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