CN210100922U - High-performance corrosion-resistant TWIP/stainless steel multilayer composite material - Google Patents
High-performance corrosion-resistant TWIP/stainless steel multilayer composite material Download PDFInfo
- Publication number
- CN210100922U CN210100922U CN201920829932.5U CN201920829932U CN210100922U CN 210100922 U CN210100922 U CN 210100922U CN 201920829932 U CN201920829932 U CN 201920829932U CN 210100922 U CN210100922 U CN 210100922U
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- twip
- layer
- steel
- layers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a corrosion-resistant TWIP stainless steel multilayer combined material of high performance, including multilayer TWIP steel material layer and multilayer stainless steel material layer, multilayer TWIP steel material layer and multilayer stainless steel material layer are range upon range of rolling in turn together, and combined material's top layer is the stainless steel layer, and the number of piles on TWIP steel material layer is 1 less than the number of piles on stainless steel material layer. The composite material is formed by laminating a plurality of layers of thinner stainless steel and TWIP steel plates, not only can exert the advantages of TWIP steel, but also can ensure the corrosion resistance and the strength requirements of the material.
Description
Technical Field
The utility model relates to a TWIP steel material technical field, concretely relates to corrosion-resistant TWIP stainless steel multilayer combined material of high performance.
Background
With the progress of national economy and society, people have higher and higher requirements on the performance of materials, the traditional metal materials have the defects that the higher the strength is, the lower the toughness is or the lower the toughness is, the higher the strength is, and people find a novel material, namely TWIP steel, which has the characteristics of high specific strength and high toughness and has a wide application prospect, but the TWIP steel has the defects of obvious delayed fracture and poor corrosion resistance, so that the industrial research and application of the TWIP steel are limited. When the metal material is strengthened, the plasticity and the toughness of the metal material are reduced, so that the strength and the toughness (plasticity) are inverted, and the further strengthening and industrial application of the metal material are restricted. CN 107309285A discloses a composite material made by rolling TWIP steel, IF steel and low carbon steel, the deformation amount generated by different materials at the upper side and the lower side of the TWIP steel is different under larger stress, so that the stress borne by the two sides of the interface is different, meanwhile, the thickness of each layer of raw material is 20mm thick, even IF 3mm material is formed by larger reduction, the deformed main three materials are generated, larger energy loss is not beneficial to the combination between the two interfaces, and the deformation is not uniform.
SUMMERY OF THE UTILITY MODEL
The technical problem that the prior art is not enough, the utility model aims to solve is that, a corrosion-resistant TWIP stainless steel multilayer combined material of high performance is provided, this combined material comprises stainless steel and TWIP steel sheet material multilayer coincide through thinner, can exert the advantage of TWIP steel, can guarantee the corrosion resistance and the intensity requirement of material again.
The technical scheme of the utility model is that:
the high-performance corrosion-resistant TWIP/stainless steel multilayer composite material comprises a plurality of TWIP steel material layers and a plurality of stainless steel material layers, wherein the plurality of TWIP steel material layers and the plurality of stainless steel material layers are alternately laminated and rolled together, the surface layers of the composite material are stainless steel layers, and the number of layers of the TWIP steel material layers is 1 less than that of the stainless steel material layers.
The thickness ratio of the TWIP steel material layer to the stainless steel material layer is 1: 0.5-2.
The thickness of each layer of material in the multi-layer composite material is not more than 0.05 mm.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses combined material adopts low yield strength, the TWIP steel and higher yield strength of high obdurability, high corrosion resistant stainless steel plate, it is stronger and every layer material can reach the TWIP stainless steel multilayer composite steel of micron level to have interface bonding through stromatolite and vacuum hot rolling mode acquisition, can regulate and control with the help of follow-up cold rolling and heat treatment process according to the difference to the material mechanical properties requirement, through multilayer structure toughening, TWIP (strain-induced twin)/TRIP (strain-induced martensite phase transition) collaborative deformation mode, big plastic deformation reinforcing and the anticorrosive effect of coating, obtain higher yield strength, elongation and high corrosion resistant multilayer composite steel plate.
The stainless steel has good corrosion resistance and high-strength mechanical property, the stainless steel can make up the defects of the TWIP steel in performance, and the comprehensive performance of the stainless steel metal and the high toughness of the TWIP steel can be effectively combined by a vacuum hot rolling method, so that the mechanical property of the TWIP steel is improved. The utility model discloses the intensity of well material is 700 MPa-1600 MPa, and the percentage elongation is at 10% - -60%, can adjust preparation technology by oneself according to actual need, has extensive range of application, and the preparation process is simple, and green pollution-free accords with the energy saving and emission reduction's that the country advocated policy.
The preparation method of the material of the utility model has simple flow, short production period, green pollution, adjustable size and thickness, and is suitable for industrial production.
Drawings
FIG. 1 is a schematic view of a symmetrical vacuum package of a hot rolled SUS304/TWIP composite plate, wherein: 1-steel plate, 2-seal, 3-high temperature isolation cloth, 4-stainless steel tube, 5-SUS 304 stainless steel sheet, 6-TWIP steel sheet.
Detailed Description
The present invention is further explained with reference to the following examples, which should not be construed as limiting the scope of the present invention.
The utility model discloses corrosion-resistant TWIP stainless steel multilayer combined material of high performance, including multilayer TWIP steel material layer and multilayer stainless steel material layer, multilayer TWIP steel material layer and multilayer stainless steel material layer are in the same place in turn range upon range of rolling, and combined material's top layer is the stainless steel layer, the number of piles of TWIP steel material layer and stainless steel material layer is not less than ten layers, the thickness of every layer of material is not more than 0.05mm in the multilayer combined material, multilayer combined material's thickness is relevant with the thickness and the number of piles of raw and other materials, the number of piles of TWIP steel material layer is 1 less than the number of piles of stainless steel material layer.
The thickness ratio of the TWIP steel material layer to the stainless steel material layer is 1: 0.5-2, and the thickness ratio can be adjusted according to actual requirements.
The preparation method of the material comprises the following steps: the stainless steel and the TWIP steel material plates are cut and laminated in a multi-layer mode, the stainless steel plates are guaranteed to be located on the surface layer of a combined blank in the laminating process, so that the corrosion resistance of the materials is guaranteed, four sealing strips are used for surrounding the laminated TWIP/stainless steel materials to form a groove, the upper end and the lower end of the groove are packaged by using covers to form a box body, argon arc welding is used for welding to obtain a sealed combined blank, the sealing and vacuumizing process is carried out, multi-pass hot rolling forming is carried out on a hot rolling mill through high-temperature heating and heat preservation in a furnace, and the total rolling reduction is guaranteed to be 90.
After hot rolling, heat treatment processes (heat preservation and quenching or annealing treatment, cold rolling and annealing treatment) can be carried out continuously to obtain better interlayer interface combination and micron-scale layer thickness dimension, and the purpose of strengthening and toughening the layered composite material is achieved.
The method comprises the following steps:
the first step, pretreatment: taking a stainless steel sheet and a TWIP steel sheet which are 0.3-2 mm thick and have the same size, respectively putting the stainless steel sheet and the TWIP steel sheet into 95% alcohol for ultrasonic cleaning, then drying and polishing until an oxide layer is removed and metallic luster is exposed;
step two, sealing and assembling: stacking stainless steel sheets and TWIP steel sheets at intervals, ensuring that the stainless steel sheets are positioned on the surface layer of a blank in the stacking process so as to ensure the corrosion resistance of the material, and fixing the TWIP/stainless steel stacked material by four sealing strips through argon arc welding; wherein the distance between the TWIP/stainless steel laminated material and the adjacent seal is 2-4mm, and the height of the laminated material plus the height of the high-temperature isolation cloth is equal to the thickness of the seal;
placing the same-size isolation cloth at two ends of the lamination, then respectively placing two steel plates at the upper end and the lower end of the seal, and welding and sealing the steel plates and the seal by argon arc welding;
the shape and size of the steel plate are determined according to the shape and size surrounded by the stainless steel sealing strip, the thickness is determined according to the stacking height, the stacking height is high, the thickness of the steel plate is large, and vice versa.
Step three, vacuumizing: drilling a through hole with the diameter of 6mm between sealing strips in a sealed assembly, welding a stainless steel pipe on the small hole, checking through leakage checking equipment to ensure that the welding and the packaging are complete (the leakage checking method is to arrange the assembly in water to inflate and pressurize the stainless steel pipe to see whether bubbles are generated) and then vacuumizing and pumping air in the hole to keep the vacuum degree at 10 by using vacuum equipment comprising a mechanical pump, a magnetic pump and a molecular pump-4pa heating the stainless steel pipe to 500-1000 ℃ by using an oxygen arc welding gun, sealing the stainless steel pipe by using a hydraulic clamp, and finally sealing the stainless steel pipe by using vacuum mud;
wherein the outer diameter of the stainless steel pipe is 8-10 mm, and the inner diameter is 6-8 mm;
step four, hot rolling: putting the assembly subjected to vacuum pumping into a high-temperature heating furnace for heating, heating to 1000-1200 ℃, and carrying out heat preservation treatment for 1-3 hours; feeding the heated assembly into a hot rolling mill by using a crane for hot rolling, ensuring that the total rolling reduction is 90 percent and the rolling reduction per time is 20-30 percent, and cooling to room temperature;
step five, cold rolling: after hot rolling, sending the material into a cold rolling mill by a crane for cold rolling, wherein the thickness of the cold rolled material is 1/3 of the thickness of the hot rolled material;
sixth step, annealing: and (3) insulating the material at 500-800 ℃ for 5-7 min, and then air-cooling to room temperature.
In the first step of the above production method, the thickness of each layer of the stainless steel sheet and the TWIP steel sheet is 1mm or less.
The thickness of each layer of plate is selected to be as thin as possible, so that under larger deformation, most of force acts between layers to improve the bonding strength, the thinner the raw material is, the thinner the thickness of each layer is after hot rolling, the larger energy is consumed by the microcracks penetrating through the interface in the expansion process, and the toughening effect is achieved. On the other hand, the thickness of each layer of the obtained material can be controlled in the micron level, and the deformation coordination capability of the material can be improved. The number of layers can be selected according to the actual required plate thickness, and the larger the final plate thickness, the larger the number of layers stacked. And adjusting subsequent cold rolling and annealing processes according to the required mechanical property, wherein the larger the deformation degree after cold rolling is, the higher the strength is, the higher the annealing temperature is (below the crystallization temperature), and the higher the toughness of the material is.
Example 1:
the high-performance corrosion-resistant TWIP/stainless steel multilayer composite material comprises a plurality of TWIP steel material layers and a plurality of stainless steel material layers, wherein the plurality of TWIP steel material layers and the plurality of stainless steel material layers are alternately laminated and rolled together, the surface layers of the composite material are stainless steel layers, the number of layers of the TWIP steel material layers is 30, the number of layers of the stainless steel material layers is 31, the thickness of each layer of the multilayer composite material is about 0.049mm, the thickness of the multilayer composite material is related to the thickness and the number of layers of raw materials, and the number of layers of the TWIP steel material layers is 1 less than that of the stainless steel material layers.
Specifically, the stainless steel material used was SUS304 austenitic stainless steel, the total number of layers of TWIP steel and SUS304 stainless steel was 61, and the ratio of the thicknesses of stainless steel and TWIP steel was 1: 1.
The TWIP steel according to the present embodiment is a well-known material main component widely used in the art: 31.48% of Mn, 2.83% of Si, 2.88% of Al and 0.0046% of C. The ductility of the TWIP steel is high and the elongation can reach 83.33%, but the tensile strength is lower and can only reach 600 MPa. SUS304 austenitic stainless steel is a well-known material main component widely used in the art: cr: 18.5% Ni: 8.5% Mn: 2% Si, 2% P, 0.025% S, 0.001%. The strength is high but the elongation is low.
The preparation process comprises the following steps:
1: taking 31 SUS304 austenitic stainless steel sheets with the thickness of 0.5mm and 30 TWIP steel sheets respectively, putting the SUS304 austenitic stainless steel sheets and the TWIP steel sheets into 95% alcohol respectively, carrying out ultrasonic cleaning, drying and polishing until an oxide layer is removed and metal luster is exposed.
The sizes of the two materials are 80mm multiplied by 0.5mm
2: the TWIP/304 laminate was fixed by stacking SUS304 stainless steel sheets 5 and TWIP steel sheets 6 (stainless steel layers on the upper and lower surfaces) at intervals and welding four steel seal strips 2 at the periphery by argon arc welding.
The seal has dimensions of 120mm × 36mm × 20mm and 84mm × 18mm × 35mm, and is made of 45 steel
3: two steel plates 1 were placed on both ends of the laminate (and the laminate was separated from the steel plates using a high temperature barrier cloth 3 of 80mm x 80mm size), and the seal and the steel plates were welded together using argon arc welding to form a closed square box.
The size of the steel plate is 84mm multiplied by 2mm
4: drilling a through hole with the diameter of 6mm in the middle of a seal, welding a stainless steel pipe 4 with the outer diameter of 10mm and the inner diameter of 6mm to the edge of the through hole, checking through leakage checking equipment to ensure that welding and packaging are complete (the leakage checking method is to arrange a blank in water to inflate and pressurize the stainless steel pipe to see whether bubbles are generated), and then vacuumizing through vacuum equipment comprising a mechanical pump, a magnetic pump and a molecular pump three-stage pump to evacuate air in the hole to keep the vacuum degree at 10-4pa heating the stainless steel pipe to 800 ℃ by using an oxygen arc welding gun, sealing the stainless steel pipe by using a hydraulic clamp, and finally sealing the stainless steel pipe by using vacuum mud.
5: and (4) putting the assembly subjected to vacuum pumping into a high-temperature heating furnace for heating, heating to 1100 ℃ for heat preservation treatment, and preserving heat for 2 hours. 6: and (3) feeding the heated assembly into a hot rolling mill by using a crane for hot rolling, wherein the rolling passes are 8 times, and the reduction rate of each pass is respectively as follows: the total rolling reduction of 20%, 21%, 22%, 23%, 27%, 32%, 35% was about 90%, and the rolling speed was 1 m/s. The yield strength of the material reaches 242MPa, the tensile strength reaches 722MPa, and the elongation reaches 47.7 percent.
Example 2:
the material was subjected to a heat treatment process on the basis of example 1, the material being held at 1050 ℃ for 6min and subsequently quenched.
The yield strength of the material is 253MPa, the tensile strength is 824MPa, and the elongation is 60.5 percent by a tensile test
Example 3:
the material was subjected to a heat treatment process on the basis of example 1, the material being held at 1100 ℃ for 6min and subsequently quenched.
The yield strength of the material reaches 214MPa, the tensile strength reaches 824MPa, and the elongation reaches 22.2 percent in a tensile test
Example 4:
the material was subjected to a heat treatment process on the basis of example 1, the material was kept at 500 ℃ for 30min and then air-cooled.
The yield strength of the material is 280MPa, the tensile strength is 857MPa, and the elongation is 38.89 percent in a tensile test
Example 5:
the material was subjected to a heat treatment process on the basis of example 1, the material was kept at 600 ℃ for 30min and then air-cooled.
The yield strength of the material reaches 326MPa, the tensile strength reaches 906MPa, and the elongation reaches 22 percent in a tensile test
Example 6:
the material was subjected to a heat treatment process on the basis of example 1, the material was kept at 820 ℃ for 3h and subsequently air-cooled.
The yield strength of the material reaches 216MPa, the tensile strength reaches 848MPa, and the elongation reaches 27.8 percent in a tensile test
Example 7:
the material was subjected to a heat treatment process based on example 1, holding the material at 1050 ℃ for 30min and subsequently quenching. The yield strength of the material is 232MPa, the tensile strength is 785MPa, and the elongation is 30.56%
Example 8:
the material was subjected to a heat treatment process on the basis of example 1, the material being held at 1100 ℃ for 30min and subsequently quenched.
The yield strength of the material is 205MPa, the tensile strength is 714MPa, and the elongation is 33.33 percent by performing a tensile test on the material
Example 9:
cold rolling the material on the basis of the example 1 until the thickness of the material is 1/3, namely the cold rolling thickness is 1 mm; then annealing treatment is carried out, the material is placed at 500 ℃ for heat preservation for 6min, and then air cooling is carried out.
In the high-performance corrosion-resistant TWIP/stainless steel multilayer composite material, the thickness of each layer of the multilayer composite material is about 0.016mm, and the thickness of the multilayer composite material is related to the thickness and the number of layers of raw materials.
The yield strength of the material subjected to a tensile test reaches 1606MPa, the tensile strength reaches 1606MPa, and the elongation reaches 10.55 percent
Example 10:
cold rolling the material on the basis of the example 1 until the thickness of the material is 1/3, namely the cold rolling thickness is 1 mm; then annealing treatment is carried out, the material is placed at 600 ℃ and kept warm for 6min, and finally air cooling is carried out to room temperature.
The yield strength of the material is 757MPa, the tensile strength is 1245MPa, and the elongation is 11.38 percent by a tensile test
Example 11:
the procedure of this example was the same as in example 10, except that the annealing temperature was 700 ℃.
The yield strength of the material is 632MPa, the tensile strength is 998MPa, and the elongation is 24.52 percent in a tensile test
Example 12:
the procedure of this example is the same as that of example 10, except that the annealing temperature is 800 ℃.
The yield strength of the material reaches 452MPa, the tensile strength reaches 919MPa, and the elongation reaches 30.56 percent in a tensile test
The results of the performance testing of the above examples are shown in the following table:
| test of | Yield strength (MPa) | Tensile strength (MPa) | Elongation percentage |
| TWIP steel | 212 | 614 | 83.33％ |
| Example 1 | 242 | 722 | 47.7％ |
| Example 2 | 253 | 823 | 60.5％ |
| Example 3 | 214 | 827 | 22.2％ |
| Example 4 | 280 | 857 | 38.89％ |
| Example 5 | 326 | 906 | 22.2％ |
| Example 6 | 261 | 848 | 27.8％ |
| Example 7 | 232 | 785 | 30.56％ |
| Example 8 | 205 | 714 | 33.33％ |
| Example 9 | 1606 | 1606 | 10.55％ |
| Example 10 | 757 | 1245 | 11.38％ |
| Example 11 | 632 | 998 | 24.52％ |
| Example 12 | 452 | 919 | 30.56％ |
The material is subjected to different heat treatment processes, the yield strength of the material is not obviously improved, but the tensile strength of the material can be improved to different degrees, the yield strength and the tensile strength of the material can be obviously improved by annealing the material after cold rolling, and the treatment process of the material can be adjusted according to different requirements on the mechanical properties of the material. The tables show that the mechanical properties of the materials are changed to different degrees after the materials are processed by different processes.
The tensile strength of the TWIP steel can be improved to different degrees through different heat treatment processes, the tensile strength of the material subjected to different heat treatment processes after hot rolling is improved to a limited extent, but the tensile strength of the material can be improved to a large extent by cold rolling after hot rolling, and the process can be adjusted according to actual requirements.
The above embodiments of the present invention are only examples for illustrating the present invention, and are not limitations to the embodiments of the present invention. It is obvious to a person skilled in the art that, on the basis of the above description, other variations and modifications can be made, which are not exhaustive of all embodiments, and all obvious variations and modifications are within the scope of the present invention.
The utility model is not the best known technology.
Claims (3)
1. The high-performance corrosion-resistant TWIP/stainless steel multilayer composite material is characterized by comprising multiple TWIP steel material layers and multiple stainless steel material layers, wherein the multiple TWIP steel material layers and the multiple stainless steel material layers are alternately laminated and rolled together, the surface layers of the composite material are stainless steel layers, and the number of the TWIP steel material layers is 1 less than that of the stainless steel material layers.
2. The composite material of claim 1, wherein the layer thickness ratio of the TWIP steel material layer to the stainless steel material layer is 1: 0.5-2.
3. The composite of claim 1, wherein the thickness of each layer of material in the multi-layer composite is no greater than 0.05 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920829932.5U CN210100922U (en) | 2019-06-04 | 2019-06-04 | High-performance corrosion-resistant TWIP/stainless steel multilayer composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920829932.5U CN210100922U (en) | 2019-06-04 | 2019-06-04 | High-performance corrosion-resistant TWIP/stainless steel multilayer composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210100922U true CN210100922U (en) | 2020-02-21 |
Family
ID=69563648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920829932.5U Active CN210100922U (en) | 2019-06-04 | 2019-06-04 | High-performance corrosion-resistant TWIP/stainless steel multilayer composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210100922U (en) |
-
2019
- 2019-06-04 CN CN201920829932.5U patent/CN210100922U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019128363A1 (en) | Preparation method of tmcp double phase stainless steel composite board for ship | |
| CN105170652B (en) | A kind of preparation method of multi-layer heterogeneous metal composite strip in razor-thin | |
| CN101992344B (en) | Preparation method of titanium-steel composite plate | |
| CN110548776A (en) | Method for preparing aluminum-magnesium-aluminum three-layer metal composite plate by prefabricating cross corrugated interface | |
| CN103639203B (en) | The vacuum packaging method of stainless steel clad plate is manufactured in symmetrical hot rolling | |
| CN110103530B (en) | High-performance corrosion-resistant TWIP/stainless steel multilayer composite material and preparation method thereof | |
| CN113664063B (en) | Preparation method of copper-molybdenum-copper layered composite material | |
| CN106623423B (en) | A kind of manufacturing method using two igneous material technique of heavy and medium plate mill production technical pure titanium plate | |
| CN109695000A (en) | Using IF steel as the two-sided titanium steel composite board of transition zone and its high temperature preparation method | |
| CN109693072B (en) | 825/X70/825 double-sided composite board and production method thereof | |
| CN113600616A (en) | Hot working method for improving high-speed impact resistance of two-phase titanium alloy | |
| CN109692873A (en) | A kind of thin compound layer titanium steel composite board and preparation method thereof | |
| CN111334731B (en) | Method for controlling anisotropy of alpha + beta titanium alloy cold-rolled plate strip | |
| CN107419196A (en) | Manganese automobile steel and preparation method thereof in the easily welding of the controllable Ultra-low carbon of yield tensile ratio | |
| WO2023065805A1 (en) | Stainless steel composite plate for weathering steel bridge having low yield ratio | |
| CN111020368A (en) | Duplex stainless steel composite steel plate for seawater desalination and manufacturing method thereof | |
| GB2621778A (en) | Hot bath forming process for high-corrosion-resistance easy-to-weld hot-pressed parts | |
| CN109811270A (en) | A kind of preparation method of heterogeneous layer structure 304L stainless steel | |
| CN111349859A (en) | Large-thickness 500 MPa-level high-Z-direction laminar-performance low-temperature container steel plate rolled by composite blank and manufacturing method thereof | |
| CN210100922U (en) | High-performance corrosion-resistant TWIP/stainless steel multilayer composite material | |
| CN102492908A (en) | Manufacturing method for thin Zr4 alloy strip with special structure | |
| CN109852895A (en) | A kind of high-strength and high ductility high magnetic characteristics metallic composite and its preparation | |
| CN109692872B (en) | Composite steel plate for rolling mill sliding plate and production method thereof | |
| CN112170531A (en) | Anti-radiation ODS steel-steel composite plate and preparation method thereof | |
| CN112937020A (en) | Multilayer vacuum-pack-rolled high-corrosion-resistance super austenitic stainless steel-steel composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |