A kind of twip steel and preparation method thereof

A steel plate and homogenization treatment technology, applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems that limit the wider application of TWIP steel, and the tensile strength of TWIP steel cannot meet the needs of industrial applications.
CN112662932BActive Publication Date: 2022-03-04CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2022-03-04

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Abstract

The invention provides a kind of TWIP steel, on the basis of Fe-Mn-C series TWIP steel, add W and optionally add one or more of Cr, Mo, Ni, Ti, V alloy elements, wherein W / C weight ratio is 1.25-10, preferably 2-5. At the same time, the invention provides a preparation method of TWIP steel. Combined with a suitable heat treatment process, the unexpected effect of increasing the strength without affecting the plasticity can be achieved, and the good plasticity of the TWIP steel can be maintained while improving the strength of the TWIP steel.
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Description

technical field

[0001] The invention belongs to the field of iron and steel metallurgy and metal materials, and in particular relates to a TWIP steel and a preparation method thereof. Background technique

[0002] Austenitic TWIP (twinning-induced plasticity) steel has the characteristics of high strength, high toughness and high strain hardening rate. As a lightweight material, it has broad application prospects in the fields of automobile and LNG ship manufacturing, oil and gas development, etc.

[0003] In the process of continuous development of TWIP steel, people have successively developed the first generation of Fe-Mn-Si-Al series TWIP steel, the second generation of Fe-Mn-C series TWIP steel and the derivatives based on this. Fe-Mn-C-Al and Fe-Mn-C-(Mo, Cr) type TWIP steels. Most of the existing TWIP steels have good elongation, but low yield strength and tensile strength.

[0004] In high-strength low-alloy steels, strong carbide-forming elements such as Ni, V, an...

Claims

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