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Manganese-containing steel and production method therefor

A production method and technology of manganese steel, applied in the field of iron and steel metallurgy, can solve the problems of high comprehensive work hardening rate, low elongation, insufficient yield strength and tensile strength, etc., and achieve high market application value and low manganese content.

Inactive Publication Date: 2015-02-25
邹平县永通金属材料有限公司
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Problems solved by technology

At the same time, this steel has good work hardening ability, good strain distribution and good deep drawing performance. High work hardening ability and high mechanical strength make this steel have good energy absorption ability and improve collision resistance. Performance, the disadvantage is that the yield strength and tensile strength are not high enough, the elongation is not as good as TWIP steel, and the comprehensive work hardening rate is not as high as TWIP steel

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  • Manganese-containing steel and production method therefor

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Embodiment Construction

[0018] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0019] A manganese-containing steel, which comprises the following components by mass percentage: carbon 0.2-1.0%, manganese 5-15%, aluminum 0.02-1.0%, phosphorus <0.025%, sulfur <0.025%, nitrogen <0.03%, silicon 0.03-2%; and, it also includes at least one of the following alloying elements: titanium 0.01-1.2%, niobium 0.01-1.2%, vanadium 0.01-1.2%; the balance is iron. For example, carbon (C): 0.2-1.0%, when the carbon content is less than 0.2%, it is easy to produce martensite, cracks are likely to occur during continuous casting and rolling, and the plasticity of the steel is reduced. When the carbon content is high At 1.0%, the stacking fault energy increases rapidly, and the deformation mechanism of the material changes from martensite transformation and deformation twinning to dislocation slip; in other words, when the carbon content is higher than 1.0%, ...

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Abstract

The invention discloses manganese-containing steel and a production method therefor. The manganese-containing steel comprises the following components, by weight, 0.2-1.0% of carbon, 5-15% of manganese, 0.02-1.0% of aluminum, phosphorus of being less than 0.025%, sulphur of being less than 0.025%, nitrogen of being less than 0.03% and 0.03%-2% of silicon. The manganese-containing steel also comprises at least one of the following alloy elements: 0.01-1.2% of titanium, 0.01-1.2% of niobium, 0.01-1.2% of vanadium, and the balance being iron element. The above scheme is employed, the steel material with TWI and TRIP effects is provided. Compared with present TWIP steel, the manganese-containing steel has a low manganese content, has advantages of high intensity, high plasticity and low cost, and has high market application values.

Description

Technical field [0001] The invention relates to iron and steel metallurgy, in particular to a manganese-containing steel and a production method thereof. Background technique [0002] The Twinning Induced Plasticity (TWIP) steel developed in recent years for high manganese steel has a TWIP effect when the deformation twins are produced during the deformation process, so it has good mechanical properties, such as high strength and high plasticity at the same time, suitable for The shortcomings of manufacturing automotive components to reduce weight and reduce gas emissions are that high manganese content will lead to a large number of cracks during hot rolling, and because manganese is a precious metal, it also increases production costs. [0003] During the deformation process of Transformation of Retained Austenite Induced Plasticity (TRIP) steel, the martensite transformation has the TRIP effect, and the transformation of retained austenite to martensite increases the strength an...

Claims

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Application Information

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IPC IPC(8): C22C38/14C22C38/12C21D8/02
CPCC22C38/04
Inventor 何丽丽
Owner 邹平县永通金属材料有限公司
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