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Transformation induced plasticity steel and manufacturing method thereof

A technology of phase change induced plasticity and manufacturing methods, applied in the direction of manufacturing tools, furnace types, quenching agents, etc., can solve the problem of low yield strength and achieve the effect of improving strength

Inactive Publication Date: 2016-10-12
NANO & ADVANCED MATERIALS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the yield strength of 5Mn steel and 10Mn steel is very low, 600MPa and 800MPa respectively

Method used

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  • Transformation induced plasticity steel and manufacturing method thereof
  • Transformation induced plasticity steel and manufacturing method thereof
  • Transformation induced plasticity steel and manufacturing method thereof

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Embodiment Construction

[0040] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0041] The specific embodiment of the present invention provides a transformation induced plasticity steel (Transformation Induced Plasticity, TRIP) used in the automobile manufacturing industry, which includes Mn with a mass percentage content of 8-12%, and a mass percentage content of 0.4-0.6% C 1-3% by mass of Al, 0.5-1% by mass of V, and the balance of Fe.

[0042] In this embodiment, the phase transformation induced plasticity steel includes 10% by mass of Mn, 0.47% by mass of C, 2% by mass of Al, 0.7% by mass of V, and The amount is Fe.

[0043] The transformation-induced plasticity steel consists of a ferrite phase and a retained austenite phase. The retained austenite phase in the transformation-induced plasticity steel is in a metas...

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Abstract

The invention provides a transformation induced plasticity steel. The transformation induced plasticity steel comprises 8 to 12 mass% of Mn, 0.4 to 0.6 mass% of C, 1 to 3 mass% of Al, 0.5 to 1 mass% of V, and the balance being Fe. The transformation induced plasticity effect can prominently improve the strength of the transformation induced plasticity steel. Moreover, the V element and C element can carry out reactions to form a vanadium carbide precipitate, which can also prominently improve the strength of the transformation induced plasticity steel. The invention also provided a manufacturing method of the transformation induced plasticity steel.

Description

technical field [0001] The invention relates to a phase-change-induced plastic steel, in particular to a high-strength, dual-phase phase-change-induced plastic steel and a manufacturing method of the phase-change-induced plastic steel. Background technique [0002] The automobile manufacturing industry is one of the fields with the largest greenhouse gas emissions in the world. One of the effective ways to reduce the amount of greenhouse gases emitted by the automobile manufacturing industry is to reduce the weight of the vehicle body. Further, the purpose of reducing the weight of the vehicle body can be achieved by using lightweight materials. The most common lightweight material currently in use in automotive manufacturing is Advanced High Strength Steels (AHSS). Advanced high-strength steels have high strength, making cars made of them lighter and components made of them thinner. However, advanced high-strength steels also need to be ductile so that complex automotive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/06C22C38/12C21D8/02
CPCC22C38/12C21D1/60C21D6/005C21D8/0205C21D8/0226C21D8/0231C21D8/0236C21D8/0263C21D9/46C22C38/04C22C38/06C21D8/1222C21D8/1227C21D8/1233C21D8/1244C21D2211/001C21D2211/005
Inventor 黄明欣齐洋何斌斌
Owner NANO & ADVANCED MATERIALS INST