A kind of alloy structural steel with high collision absorption energy and preparation method thereof

An alloy structural steel and collision absorption technology, applied in the field of collision materials, can solve the problems of insufficient collision energy absorption effect, etc., and achieve the effect of good dynamic energy absorption ability

Active Publication Date: 2019-05-31
CENT IRON & STEEL RES INST
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an alloy structural steel with high impact absorption energy and its preparation method, which solves the problem that the impact energy absorption effect of existing protective materials is seriously insufficient under impact load

Method used

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  • A kind of alloy structural steel with high collision absorption energy and preparation method thereof
  • A kind of alloy structural steel with high collision absorption energy and preparation method thereof
  • A kind of alloy structural steel with high collision absorption energy and preparation method thereof

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Embodiment Construction

[0025] The following are examples of alloy steel produced with three chemical components under the same production process conditions and their performance test results. The chemical composition and mechanical properties are shown in Table 1, and the actual production process parameters are shown in Table 2.

[0026] Table 1 embodiment chemical composition and performance (mass fraction %, balance is Fe)

[0027]

[0028] Table 2 actual production process parameters

[0029]

[0030] In the production operation steps, the vacuum melting temperature is 1430-1480 °C, and nitrogen gas is continuously filled into the molten steel through a self-designed air duct to form a nitrogen protective atmosphere. Under this composition system, the normal pressure saturation solubility of N atoms is 0.35%. ~0.43%. A uniform and stable full-austenite steady-state structure is obtained through casting and controlled rolling and controlled cooling technology. The hardness of the alloy ...

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Abstract

The invention discloses alloy structural steel with high collision absorption energy and a preparation method thereof, and belongs to the technical fields of metal materials and preparation thereof. The alloy structural steel is composed of 0.06-0.10% of carbon, 13.0-15.0% of manganese, 15.0-17.0% of chromium, 0.35-0.40% of nitrogen, less than or equal to 0.015% of phosphorus, less than or equal to 0.015% of sulfur and the balance iron. The preparation process comprises the steps of smelting, casting, controlled rolling and controlled cooling. The alloy structural steel has the advantages of being high in toughness, plasticity and dynamic hardening rate, stable in structure, high in low temperature toughness, resistant to corrosion and high in collision absorption energy.

Description

technical field [0001] The invention belongs to the technical field of collision materials, in particular to an alloy structural steel with high collision absorption energy and a preparation method thereof. Alloy structural steel with high impact absorption energy, high strength and toughness, high plasticity, high dynamic hardening rate, stable structure, high and low temperature toughness, corrosion resistance, etc. It is extremely suitable for service conditions of collision and impact, and its dynamic mechanical properties are more than 1.7 times that of traditional materials. Background technique [0002] In this world, collisions happen all the time, and collisions happen when there is movement. The collision process is a process of energy conversion, from kinetic energy to strain energy, light, electricity, sound, heat and other forms of energy. Collision itself has its own advantages and disadvantages, and harmful collisions must be prevented. Therefore, how to al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/38C21D8/02
CPCC21D8/0226C21D2211/001C22C38/001C22C38/38
Inventor 时捷孙挺李晓源闫永明王毛球徐乐何肖飞尉文超杜玉婧
Owner CENT IRON & STEEL RES INST
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