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High-performance anti-corrosion TWIP/stainless steel multi-layer composite material and preparation method

A multi-layer composite material and composite material technology, applied in the field of design metal calendering, can solve the problems of low strength, uneven deformation, different stress, etc., and achieve the effects of good corrosion resistance, high elongation, corrosion resistance, and good mechanical properties.

Active Publication Date: 2019-08-09
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the progress of the national economy and society, people have higher and higher requirements for the performance of materials. Traditional metal materials have the disadvantages of higher strength and lower toughness, or lower toughness and higher strength. People have discovered a new material TWIP steel. TWIP steel has the characteristics of high specific strength and high toughness, and has wide application prospects, but TWIP steel has obvious shortcomings of delayed fracture and poor corrosion resistance, which limits the industrial research and application of TWIP steel
When metal materials are strengthened, it will lead to a decrease in plasticity and toughness, which will lead to an inversion of strength and toughness (plasticity), which restricts the further strengthening and toughness of metal materials and industrial applications.
CN 107309285 A discloses a composite material made by rolling TWIP steel, IF steel and low-carbon steel. Under relatively large stress, the amount of deformation produced by the different materials on the upper and lower sides of TWIP steel will also be different, resulting in The stresses are different, and the thickness of each layer of raw material is 20mm. Even if a 3mm material is formed after a large reduction, the deformation is mainly three kinds of materials, and the large energy loss is not conducive to the contact between the two interfaces. Bonding, uneven deformation

Method used

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  • High-performance anti-corrosion TWIP/stainless steel multi-layer composite material and preparation method
  • High-performance anti-corrosion TWIP/stainless steel multi-layer composite material and preparation method
  • High-performance anti-corrosion TWIP/stainless steel multi-layer composite material and preparation method

Examples

Experimental program
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Effect test

preparation example Construction

[0031] The preparation method of the above materials is as follows: by cutting stainless steel and TWIP steel material sheets and laminating them in multiple layers, in the lamination process, it is necessary to ensure that the stainless steel plate is located on the surface layer of the billet to ensure the corrosion resistance of the material, and then four seals are used to surround the lamination. The TWIP / stainless steel material forms a groove, and the upper and lower ends are sealed with lids to form a box body, which is welded by argon arc welding to obtain a sealed group blank, which is sealed and then vacuumized. Multi-pass hot rolling is carried out on the hot rolling mill to ensure that the total rolling reduction is 90%.

[0032] After hot rolling, the heat treatment process (heat preservation and quenching or annealing treatment, cold rolling and annealing treatment) can be continued to obtain better interlayer interface bonding and micron layer thickness scale, a...

Embodiment 1

[0047] The stainless steel material specifically used in this embodiment is SUS304 austenitic stainless steel, the total number of stacked layers of TWIP steel and SUS304 stainless steel is 61, and the layer thickness ratio of stainless steel and TWIP steel is 1:1.

[0048] The TWIP steel involved in this embodiment is a well-known material widely used in the field. The main components are: Mn: 31.48% Si: 2.83% Al: 2.88% C: 0.0046%. The toughness of TWIP steel is very high and the elongation can reach 83.33%, but the tensile strength is relatively low and can only reach 600MPa. SUS304 austenitic stainless steel is a well-known material widely used in the field. Main components: Cr: 18.5% Ni: 8.5% Mn: 2% Si: 2% P: 0.025% S: 0.001%. It has high strength but low elongation.

[0049] The specific preparation process is:

[0050] 1: Take 31 pieces of SUS304 austenitic stainless steel and 30 pieces of TWIP steel with a thickness of 0.5mm, put them in 95% alcohol for ultrasonic cle...

Embodiment 2

[0059] On the basis of Example 1, the material was subjected to a heat treatment process, and the material was kept at 1050° C. for 6 minutes and then quenched.

[0060] The tensile test of the material yielded a yield strength of 253MPa, a tensile strength of 824MPa, and an elongation of 60.5%.

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Abstract

The invention discloses a high-performance anti-corrosion TWIP / stainless steel multi-layer composite material and a preparation method. The composite material comprises multiple TWIP steel material layers and multiple stainless steel material layers, the TWIP steel material layers and the stainless steel material layers are laminated alternately and rolled together, and the surface layers of the composite material are all stainless steel layers; the thickness of each material layer in the multi-layer composite material is less than or equal to 0.05 millimeter, and the number of the TWIP steelmaterial layers is one less than that of the stainless steel material layers. According to the preparation method, based on the requirements for the mechanical properties of the material, subsequent process adjustment and control such as thermal treatment or cold rolling or annealing treatment and the like are conducted, and therefore the TWIP / stainless steel multi-layer composite steel with the high yield strength and the high product of strength and elongation is obtained. The composite material is composed of thin stainless steel and TWIP steel plate materials through multi-layer lamination, the advantages of the TWIP steel can be exerted, and the corrosion resistance performance and strength requirement of the material can be ensured.

Description

technical field [0001] The invention is designed in the field of metal rolling, and a metal composite material with high interface bonding strength, high strength, high toughness and high corrosion resistance is prepared. Background technique [0002] With the progress of the national economy and society, people have higher and higher requirements for the performance of materials. Traditional metal materials have the disadvantage that the higher the strength, the lower the toughness or the lower the toughness, the higher the strength. A new material, TWIP steel, has been discovered. TWIP steel has the characteristics of high specific strength and high toughness, and has a wide range of application prospects. However, TWIP steel has the shortcomings of obvious delayed fracture and poor corrosion resistance, which limit the industrial research and application of TWIP steel. When the metal material is strengthened, it will lead to the decline of plasticity and toughness, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B37/06B32B37/08B32B37/10C21D8/02C21D9/00B21B1/38
CPCB32B15/011B32B37/06B32B37/10B32B37/08B21B1/38C21D8/0226C21D8/0236C21D9/0081B32B2250/42B32B2307/546B32B2307/714B21B2001/386Y02P10/20
Inventor 陈翠欣葛一飞刘宝玺冯建航殷福星
Owner HEBEI UNIV OF TECH
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