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A kind of manganese-containing steel and its production method

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: 2016-11-09
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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  • A kind of manganese-containing steel and its production method

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying 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 at least one of the following alloying elements is included: 0.01-1.2% titanium, 0.01-1.2% niobium, 0.01-1.2% vanadium; 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 easy to occur in the continuous casting and rolling process, and the plasticity of the steel grade decreases. When the carbon content is high When the carbon content is higher than 1.0%, the stacking fault energy increases rapidly, and the deformation mechanism of the material changes from martensitic phase transformation and deformation twinning to dislocation s...

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Abstract

A manganese steel and production method thereof, said manganese steel comprising 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 further comprising at least one of the following alloying elements: titanium 0.01-1.2%, niobium 0.01-1.2%, vanadium 0.01-1.2%; the remainder being elemental iron. Using the described scheme provides a steel having both TWIP and TRIP effects; in contrast to existing TWIP steels, the steel of the invention has a lower manganese content, has the advantages of high strength, high plasticity, and low cost, and has value in market applications.

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 high-manganese steel deformation twinning induced plasticity (Twinning Induced Plasticity, TWIP) steel developed in recent years has a TWIP effect in the deformation process, so it has good mechanical properties, such as high strength and high plasticity at the same time, suitable for The disadvantage of manufacturing components for the automotive sector to reduce weight and reduce gas emissions is that the high manganese content leads to a large number of cracks during the hot rolling process and, since manganese is a precious metal, it also increases production costs. [0003] During the deformation process of Transformation of Retained Austenite Induced Plasticity (TRIP) steel, martensitic transformation occurs, which has the TRIP effect, and the retained austenite transforms into marten...

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Application Information

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Patent Type & Authority Patents(China)
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