TWIP steel and preparation method thereof

A steel plate, fe-mn-c technology, which is applied in the field of TWIP steel and its preparation, can solve the problems that the tensile strength of TWIP steel cannot meet the needs of industrial applications, and limit the wider application of TWIP steel.
CN112662932AActive Publication Date: 2021-04-16CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2021-04-16

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Abstract

The invention provides TWIP steel. W is added on the basis of Fe-Mn-C series TWIP steel, one or more of Cr, Mo, Ni, Ti and V alloy elements can be selectively added, and the weight ratio of W to C is 1.25-10, preferably 2-5. Besides, the invention provides a preparation method of the TWIP steel, in combination with a proper heat treatment process, the accidental effect of improving the strength without influencing plasticity can be achieved, and the good plasticity of the TWIP steel is maintained while the strength of the TWIP steel is improved.
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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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