CN105925896A - 1000 MPa-grade high-strength and high-plasticity hot-rolled steel plate and manufacturing method thereof - Google Patents
1000 MPa-grade high-strength and high-plasticity hot-rolled steel plate and manufacturing method thereof Download PDFInfo
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- CN105925896A CN105925896A CN201610490062.4A CN201610490062A CN105925896A CN 105925896 A CN105925896 A CN 105925896A CN 201610490062 A CN201610490062 A CN 201610490062A CN 105925896 A CN105925896 A CN 105925896A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
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Abstract
The invention belongs to the technical field of advanced high-strength steel production, and in particular, relates to a 1000 MPa-grade high-strength and high-plasticity hot-rolled steel plate and a manufacturing method thereof. The hot-rolled steel plate comprises the following chemical components: 0.15-0.3% of C, 5-6% of Mn, 0.05-0.12% of N, Si less than 0.2%, S less than 0.01%, P less than 0.01%, 0.002-0.04% of Al, and the balance of Fe. The hot-rolled steel plate is prepared according to the components by such steps as smelting, casting, hot rolling and reverse phase change annealing. A nitrogen microalloying method and effects of strengthening nitrogen element solid solution and stabilizing austenite are used for effectively increasing the content of residual austenite obtained after reverse phase change annealing of the hot-rolled plate and improving the strength and the plasticity of a manganese steel plate in hot rolling; and in addition, the steel plate hardly contains no precious alloy elements, so that the production cost is prominently reduced.
Description
Technical field
The invention belongs to advanced high-strength steel production technical field, be specifically related to a kind of high plasticity hot-rolled steel plate of 1000MPa grade high-strength
And manufacture method.
Background technology
Advanced high-strength steel is the new type steel occurred in recent years, be widely used in automobile, science of bridge building, power transmission tower, ocean platform,
The industry such as pipe-line and shipbuilding.Compared with traditional rolled products of ordinary high-strength steel, the advantage of its maximum is in guarantee power
Learn thickness and the weight alleviating plate members while performance, additionally, it also has good formability, crashproof concavity, anti-tired
The advantages such as labor performance, higher work hardening rate, all demonstrate good application prospect in every profession and trade.First generation advanced person is high-strength
Steel mainly includes gapless atomic steel, dual phase steel, transformation induced plasticity steel, Multiphase Steel and martensite steel etc., and its microstructure is
Based on the heterogeneous structure of ferrite (soft phase), wherein do not contain or containing only a small amount of retained austenite (5～15%).The second generation is first
Enter high-strength steel owing to adding substantial amounts of alloying element, play and substantial amounts of remnants under the effect of stable austenite, room temperature, can be obtained
Austenite (40～100%), therefore its microstructure is based on austenite, it is possible to obtain the most excellent mechanical performance, but its
Poor processability, smelting difficulty are big, industrial production cost height.Third generation advanced person's high-strength steel main alloy element is carbon and manganese, two
Person is respectively provided with expansion austenite phase field and the effect of stable residual austenite.The mass fraction general control of manganese between 3～12%,
And the mass fraction of carbon is higher than common TRIP steel, at most up to 0.6%, can at room temperature obtain after heat treatment
20～the retained austenite of 40%.
Medium managese steel as third generation advanced person's high-strength steel, it is possible to obtain under a small amount of low-cost advantage premise adding expensive alloying elements
Obtain relatively good comprehensive mechanical property.The tough mechanism of medium managese steel is relevant with heat treating regime, deposits after reverse transformation annealing in matrix
At the most stable retained austenite and ultra-fine grained ferrite, mainly induced by the strain/stress of retained austenite at the deformation initial stage
Martensitic traoformation suppresses stress raisers, and then obtains homogeneous deformation；In the deformation later stage, retained austenite fundamental transformation is horse
Family name's body, TRIP effect fades away, now the compatible deformation between ultra-fine grained ferrite and martensite and the obstruction work to dislocation thereof
With providing possibility for being processed further hardening, people expect that hot rolling medium managese steel plate can have more excellent comprehensive mechanical property.
Summary of the invention
The problem existed for prior art, the present invention provides a kind of high plasticity hot-rolled steel plate of 1000MPa grade high-strength and manufacture thereof
Method, it is therefore an objective to by using nitrogen microalloying, gives full play to the strengthening of nitrogen element solid solution, stable austenite and nitride refinement crystalline substance
The effect of grain, improves the comprehensive mechanical property of hot rolling medium managese steel plate.
The high plasticity hot-rolled steel plate of 1000MPa grade high-strength of the present invention, its chemical composition according to mass percent is: C
0.15～0.3%, Mn 5～6%, N 0.05～0.12%, Si < 0.2%, S < 0.01%, P < 0.01%, Al 0.002～0.04%, remaining
Amount is Fe；
Described hot rolled steel plate tissue is lath-shaped austenite and the alternate lamellar structure of tempered martensite, and thickness is 2～4mm, anti-
Tensile strength is 1000～1100MPa, and elongation percentage is 25～45%.
Its manufacture method follows the steps below:
(1) smelt and cast: according to chemical composition C 0.15～0.3%, Mn 5～6%, N 0.05～0.12%, Si < 0.2%, S
< < 0.01%, Al 0.002～0.04%, surplus is that Fe carries out dispensing, smelting molten steel in pressurization induction furnace, takes out true for 0.01%, P
Sky also makes liquid steel temperature reach 1550～1650 DEG C；
It is filled with, when stove internal gas pressure is less than 5Pa, the nitrogen that purity is 99.9993%, makes nitrogen pressure in furnace reach 1～3 atmospheric pressure
Level, is promoted to 4～6 atmospheric pressure before casting by nitrogen pressure in furnace, needs to continue pressurize 10～50 points after having cast
Clock, obtains ingot casting；
(2) hot rolling: ingot casting be heated to 1100～1200 DEG C with stove and be incubated 1～2h, carrying out 7～9 passage hot rollings, hot rolling subsequently
Start rolling temperature and finishing temperature be respectively 1050～1160 DEG C and 800～900 DEG C, hot rolling is cooled to room temperature after terminating in atmosphere,
Obtain 2～4mm thick hot rolled plates；
(3) reverse transformation annealing: with stove, hot rolled plate being heated to 610～660 DEG C and is incubated 1～10h, air cooling is to room temperature subsequently,
To the high plasticity hot-rolled steel plate of 1000MPa grade high-strength, its tensile strength is 1000～1100MPa, and elongation percentage is 25～45%.
Compared with prior art, the feature of the present invention and providing the benefit that:
Adding nitrogen element in the hot rolled steel plate raw material of the present invention, nitrogen can be stablized with the form of interstitial atom and strengthen austenite,
Nitride is less with the interface energy of iron-based, is more beneficial for being formed the tiny and hardening constituent of disperse, effectively strengthens the metallic bond of steel.
The content of nitrogen element is controlled by the present invention be to ensure that nitrogen can play predictive role in 0.05～0.12%, and will not significantly increase
Smelt greatly difficulty.Nitrogen element plays solution strengthening, stable austenite and the effect of nitride crystal grain thinning in this range, effectively
Obtain residual austenite content after improve the annealing of hot rolled plate reverse transformation, and improve intensity and the plasticity of hot rolling medium managese steel plate.
Additionally, the present invention adds expensive alloying elements (Ni, Cr, Mo etc.) hardly, significantly reduce production cost.This
The 1000MPa grade high-strength high plasticity hot-rolled steel plate tensile strength of bright manufacture is 1000～1100MPa, and elongation percentage is 25～45%.
Air pressure change in manufacture method of the present invention is to ensure that nitrogen element dissolves in molten steel and do not spills over, and the present invention is at course of hot rolling
In temperature retention time and open, the control of finishing temperature is to ensure that ingot structure complete austenitizing and homogenizes, after rolling simultaneously
Obtaining the microstructure that size is tiny, in the inventive method, the annealing of last reverse transformation is to make martensite reverse become austenite,
Finally obtain a large amount of metastable retained austenites in room temperature, thus improve the intensity of cold-rolled steel sheet.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of manufacture method of the present invention；
In figure: Ac1It it is the beginning temperature that under heated condition, austenite changes；Ac3It it is the end of a period temperature that under heated condition, austenite changes
Degree；
Fig. 2 is that the scanning electron of the 1000MPa grade high-strength high plasticity hot-rolled steel plate microstructure that the embodiment of the present invention 1 obtains shows
Micro mirror observed result；
Fig. 3 is that the scanning electron of the 1000MPa grade high-strength high plasticity hot-rolled steel plate microstructure that the embodiment of the present invention 2 obtains shows
Micro mirror observed result；
Fig. 4 is that the scanning electron of the 1000MPa grade high-strength high plasticity hot-rolled steel plate microstructure that the embodiment of the present invention 3 obtains shows
Micro mirror observed result；
Fig. 5 is the typical project load-deformation curve that steel plate of the present invention uniaxial tension at ambient temperature obtains.
Detailed description of the invention
The technical process of the present invention is as shown in Figure 1.
According to chemical composition C 0.15～0.3%, Mn 5～6%, N 0.05～0.12%, Si < 0.2%, S < 0.01%, P < 0.01%,
Al 0.002～0.04%, surplus is Fe dispensing, smelting molten steel in pressurization induction furnace, vacuumizes and make liquid steel temperature to reach
1550～1650 DEG C；
It is filled with, when stove internal gas pressure is less than 5Pa, the nitrogen that purity is 99.9993%, makes nitrogen pressure in furnace reach 1～3 atmospheric pressure
Level, is promoted to 4～6 atmospheric pressure by nitrogen pressure in furnace before casting, needs continuation pressurize 10～50 minutes after having cast,
Obtain ingot casting；
Ingot casting it is heated to 1100～1200 DEG C with stove and is incubated 1～2h, then passing through 7～9 passages and be rolled into 2～4mm thick heat
Rolling plate, start rolling temperature and finishing temperature and be respectively 1050～1160 DEG C and 800～900 DEG C, hot rolling is cooled to room after terminating in atmosphere
Temperature, obtains hot rolled plate；With stove, hot rolled plate being heated to 610～660 DEG C and is incubated 1～10h, air cooling is to room temperature subsequently, obtains
The high plasticity hot-rolled steel plate of 1000MPa grade high-strength, its typical project load-deformation curve that uniaxial tension obtains at ambient temperature
As it is shown in figure 5, as can be seen from the figure steel plate has high-ductility while having high intensity.
Embodiment 1
In embodiment, the chemical composition of high-strength high-plasticity steel is shown in Table 1.
Table 1 chemical composition (wt.%)
Its manufacture method follows the steps below:
(1) according to the ingredient composition of table 1, smelting molten steel in pressurization induction furnace, vacuumize and make liquid steel temperature to reach 1600 DEG C；
It is filled with, when stove internal gas pressure is less than 5Pa, the nitrogen that purity is 99.9993%, makes nitrogen pressure in furnace reach 2 air setting-out
Flat.Before casting, nitrogen pressure in furnace is promoted to 5 atmospheric pressure, needs after having cast to continue pressurize 30 minutes, obtain
Ingot casting；
(2) ingot casting it is heated to 1200 DEG C with stove and is incubated 1h, then passing through 8 passage hot rollings, start rolling temperature and finishing temperature
Being respectively 1160 DEG C and 860 DEG C, hot rolling is cooled to room temperature after terminating in atmosphere, obtains the thick hot rolled plate of 2.5mm；
(3) with stove, hot rolled plate being heated to 635 DEG C and be incubated 3h, air cooling is to room temperature subsequently, obtains 1000MPa grade high-strength
High plasticity hot-rolled steel plate, its microscopic structure as in figure 2 it is shown, be lath-shaped austenite and the alternate lamellar structure of tempered martensite,
Its tensile strength is 1020MPa, and elongation percentage is 43%.
Embodiment 2
In the present embodiment, the chemical composition of advanced high-strength steel is shown in Table 2.
Table 2 chemical composition (wt.%)
Its manufacture method follows the steps below:
(1) according to the ingredient composition of table 2, smelting molten steel in pressurization induction furnace, vacuumize and make liquid steel temperature to reach 1580 DEG C；
It is filled with, when stove internal gas pressure is less than 5Pa, the nitrogen that purity is 99.9993%, makes nitrogen pressure in furnace reach 3 air setting-out
Flat.Need before casting nitrogen pressure in furnace is promoted to 4 atmospheric pressure, need after having cast to continue pressurize 35 minutes, obtain
Ingot casting；
(2) ingot casting it is heated to 1200 DEG C with stove and is incubated 2h, then passing through 7 passage hot rollings, start rolling temperature and finishing temperature
Being respectively 1160 DEG C and 840 DEG C, hot rolling is cooled to room temperature after terminating in atmosphere, obtains the thick hot rolled plate of 3mm；
(3) with stove, hot rolled plate being heated to 640 DEG C and be incubated 7h, air cooling is to room temperature subsequently, obtains 1000MPa grade high-strength
High plasticity hot-rolled steel plate, its microscopic structure as it is shown on figure 3, be lath-shaped austenite and the alternate lamellar structure of tempered martensite,
Tensile strength is 1040MPa, and elongation percentage is 40%.
Embodiment 3
In embodiment, the chemical composition of high-strength high-plasticity steel is shown in Table 3.
Table 3 chemical composition (wt.%)
Its manufacture method follows the steps below:
(1) according to the ingredient composition of table 3, smelting molten steel in pressurization induction furnace, vacuumize and make liquid steel temperature to reach 1550 DEG C；
It is filled with, when stove internal gas pressure is less than 5Pa, the nitrogen that purity is 99.9993%, makes nitrogen pressure in furnace reach 2 air setting-out
Flat, need nitrogen pressure in furnace is promoted to 6 atmospheric pressure before casting, need after having cast to continue pressurize 40 minutes,
To ingot casting；
(2) ingot casting it is heated to 1150 DEG C with stove and is incubated 2h, then passing through 9 passage hot rolling start rolling temperatures and finishing temperature is divided
Not being 1100 DEG C and 810 DEG C, hot rolling is cooled to room temperature after terminating in atmosphere, obtains the thick hot rolled plate of 4mm；
(3) with stove, hot rolled plate being heated to 650 DEG C and be incubated 5h, air cooling is to room temperature subsequently, obtains 1000MPa grade high-strength
High plasticity hot-rolled steel plate, its microscopic structure as shown in Figure 4, for the lamellar structure that lath-shaped austenite and tempered martensite are alternate,
Tensile strength is 1060MPa, and elongation percentage is 35%.
Comparative example 1
In comparative example, the chemical composition of steel is shown in Table 4.
Table 4 chemical composition (wt.%)
Its manufacture method follows the steps below:
According to the ingredient composition of table 4, smelting molten steel in pressurization induction furnace, vacuumize and make liquid steel temperature to reach 1550 DEG C；
It is filled with, when stove internal gas pressure is less than 5Pa, the nitrogen that purity is 99.9993%, makes nitrogen pressure in furnace reach 3 air setting-out
Flat, need before casting nitrogen pressure in furnace is promoted to 6 atmospheric pressure, need after having cast to continue pressurize 20 minutes, obtain
Ingot casting；
(2) ingot casting it is heated to 1150 DEG C with stove and is incubated 1h, then passing through 8 passages and be rolled into the thick hot rolled plate of 3.5mm,
Start rolling temperature and finishing temperature are respectively 1100 DEG C and 800 DEG C, and hot rolling is cooled to room temperature after terminating in atmosphere, obtains hot rolled plate.
(3) with stove, hot rolled plate being heated to 625 DEG C and be incubated 10h, air cooling is to room temperature subsequently, obtains 1000MPa grade high-strength
High plasticity hot-rolled steel plate, its tensile strength is only 980MPa, and elongation percentage is 22%.
Comparative example 2
In comparative example, the chemical composition of advanced high-strength steel is shown in Table 5.
Table 5 chemical composition (wt.%)
Its manufacture method follows the steps below:
(1) according to composition smelting molten steel in pressurization induction furnace of table 5, vacuumize and make liquid steel temperature to reach 1600 DEG C；
It is filled with, when stove internal gas pressure is less than 5Pa, the nitrogen that purity is 99.9993%, makes nitrogen pressure in furnace reach 2 air setting-out
Flat, need before casting nitrogen pressure in furnace is promoted to 5 atmospheric pressure, need after having cast to continue pressurize 25 minutes, obtain
Ingot casting；
(2) ingot casting it is heated to 1180 DEG C with stove and is incubated 1h, then passing through 9 passages and be rolled into the thick hot rolled plate of 2.5mm,
Start rolling temperature and finishing temperature are respectively 1120 DEG C and 830 DEG C, and hot rolling is cooled to room temperature after terminating in atmosphere, obtains hot rolled plate.
(3) with stove, hot rolled plate being heated to 560 DEG C and be incubated 1h, air cooling is to room temperature subsequently, obtains 1000MPa grade high-strength
High plasticity hot-rolled steel plate, its tensile strength is only 970MPa, and elongation percentage is 20%.
Comparative example 3
In comparative example, the chemical composition of advanced high-strength steel is shown in Table 6.
Table 6 chemical composition (wt.%)
Its manufacture method follows the steps below:
(1) according to composition smelting molten steel in pressurization induction furnace of table 6, vacuumize and make liquid steel temperature to reach 1580 DEG C；
It is filled with, when stove internal gas pressure is less than 5Pa, the nitrogen that purity is 99.9993%, makes nitrogen pressure in furnace reach 3 air setting-out
Flat, need before casting nitrogen pressure in furnace is promoted to 4 atmospheric pressure, need after having cast to continue pressurize 45 minutes, obtain
Ingot casting；
(2) ingot casting it is heated to 1160 DEG C with stove and is incubated 2h, then passing through 7 passages and be rolled into the thick hot rolled plate of 4mm, open
Rolling temperature and finishing temperature is respectively 1100 DEG C and 850 DEG C, hot rolling is cooled to room temperature after terminating in atmosphere, obtains hot rolled plate.
(3) with stove, hot rolled plate being heated to 650 DEG C and be incubated 20h, air cooling is to room temperature subsequently, obtains 1000MPa grade high-strength
High plasticity hot-rolled steel plate, its tensile strength is 1060MPa, and elongation percentage is only 7%.
From above contrast it can be seen that comparative example the tensile strength of hot rolled steel plate or elongation percentage be substantially less than the enforcement effect of the present invention
Really.
Claims (2)
1. the high plasticity hot-rolled steel plate of 1000MPa grade high-strength, it is characterised in that chemical composition according to mass percent is: < < < 0.01%, Al 0.002 ~ 0.04%, surplus is Fe for 0.01%, P for 0.2%, S for C 0.15 ~ 0.3%, Mn 5 ~ 6%, N 0.05 ~ 0.12%, Si；
Described hot rolled steel plate tissue is lath-shaped austenite and the alternate lamellar structure of tempered martensite, and thickness is 2 ~ 4mm, and tensile strength is 1000 ~ 1100MPa, and elongation percentage is 25 ~ 45%.
The manufacture method of a kind of high plasticity hot-rolled steel plate of 1000MPa grade high-strength the most as claimed in claim 1, it is characterised in that follow the steps below:
(1) smelt and cast: according to chemical composition C 0.15 ~ 0.3%, Mn 5 ~ 6%, N 0.05 ~ 0.12%, Si < 0.2%, S < 0.01%, P < 0.01%, Al 0.002 ~ 0.04%, surplus is that Fe carries out dispensing, smelting molten steel in pressurization induction furnace, vacuumizes and make liquid steel temperature to reach 1550 ~ 1650 DEG C；
It is filled with the nitrogen that purity is 99.9993% when stove internal gas pressure is less than 5Pa, nitrogen pressure in furnace is made to reach 1 ~ 3 atmospheric pressure, before casting, nitrogen pressure in furnace is promoted to 4 ~ 6 atmospheric pressure, needs after having cast to continue pressurize 10 ~ 50 minutes, obtain ingot casting；
(2) hot rolling: ingot casting is heated to 1100 ~ 1200 DEG C with stove and is incubated 1 ~ 2h, carry out 7 ~ 9 passage hot rollings subsequently, the start rolling temperature of hot rolling and finishing temperature are respectively 1050 ~ 1160 DEG C and 800 ~ 900 DEG C, and hot rolling is cooled to room temperature after terminating in atmosphere, obtain the thick hot rolled plate of 2 ~ 4mm；
(3) reverse transformation annealing: with stove, hot rolled plate being heated to 610 ~ 660 DEG C and is incubated 1 ~ 10h, air cooling is to room temperature subsequently, obtains the high plasticity hot-rolled steel plate of 1000MPa grade high-strength, and its tensile strength is 1000 ~ 1100MPa, and elongation percentage is 25 ~ 45%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756528A (en) * | 2016-11-18 | 2017-05-31 | 东北大学 | A kind of nitrogen medium managese steel strip high and its near-net forming preparation method |
| CN108655354A (en) * | 2018-06-07 | 2018-10-16 | 东北大学 | A kind of short flow process of high strength and ductility medium managese steel strip |
| CN114262778A (en) * | 2021-12-27 | 2022-04-01 | 中国科学院金属研究所 | Medium manganese steel plate and preparation method thereof |
| CN114836688A (en) * | 2022-04-20 | 2022-08-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Reverse phase transformation niobium microalloyed light high-strength steel and production method thereof |
| US11447843B2 (en) * | 2019-11-19 | 2022-09-20 | Seoul National University R&Db Foundation | Resettable alloys and manufacturing method for the same |
| CN115961130A (en) * | 2021-10-11 | 2023-04-14 | 清华大学 | High-strength high-plasticity medium manganese steel and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638749A (en) * | 2009-08-12 | 2010-02-03 | 钢铁研究总院 | Automobile steel with low cost and high strength ductility balance and preparation method thereof |
| JP2012172242A (en) * | 2011-02-24 | 2012-09-10 | Jfe Steel Corp | High-tensile steel sheet having superior toughness and method for manufacturing the same |
| CN104498821A (en) * | 2014-12-05 | 2015-04-08 | 武汉钢铁(集团)公司 | Medium-manganese high-strength steel for automobiles and production method thereof |
| CN104651734A (en) * | 2014-12-11 | 2015-05-27 | 武汉钢铁(集团)公司 | 1000 MPa-level high-strength high-plasticity aluminum-containing medium manganese steel and manufacturing method thereof |
-
2016
- 2016-06-29 CN CN201610490062.4A patent/CN105925896B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638749A (en) * | 2009-08-12 | 2010-02-03 | 钢铁研究总院 | Automobile steel with low cost and high strength ductility balance and preparation method thereof |
| JP2012172242A (en) * | 2011-02-24 | 2012-09-10 | Jfe Steel Corp | High-tensile steel sheet having superior toughness and method for manufacturing the same |
| CN104498821A (en) * | 2014-12-05 | 2015-04-08 | 武汉钢铁(集团)公司 | Medium-manganese high-strength steel for automobiles and production method thereof |
| CN104651734A (en) * | 2014-12-11 | 2015-05-27 | 武汉钢铁(集团)公司 | 1000 MPa-level high-strength high-plasticity aluminum-containing medium manganese steel and manufacturing method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756528A (en) * | 2016-11-18 | 2017-05-31 | 东北大学 | A kind of nitrogen medium managese steel strip high and its near-net forming preparation method |
| CN106756528B (en) * | 2016-11-18 | 2018-08-17 | 东北大学 | A kind of high nitrogen medium managese steel strip and its near-net forming preparation method |
| CN108655354A (en) * | 2018-06-07 | 2018-10-16 | 东北大学 | A kind of short flow process of high strength and ductility medium managese steel strip |
| US11447843B2 (en) * | 2019-11-19 | 2022-09-20 | Seoul National University R&Db Foundation | Resettable alloys and manufacturing method for the same |
| CN115961130A (en) * | 2021-10-11 | 2023-04-14 | 清华大学 | High-strength high-plasticity medium manganese steel and preparation method thereof |
| CN114262778A (en) * | 2021-12-27 | 2022-04-01 | 中国科学院金属研究所 | Medium manganese steel plate and preparation method thereof |
| CN114262778B (en) * | 2021-12-27 | 2023-01-06 | 中国科学院金属研究所 | Medium manganese steel plate and preparation method thereof |
| CN114836688A (en) * | 2022-04-20 | 2022-08-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Reverse phase transformation niobium microalloyed light high-strength steel and production method thereof |
| CN114836688B (en) * | 2022-04-20 | 2023-10-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Reverse phase transformation niobium microalloyed light high-strength steel and production method thereof |
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