CN106435131A - Method for preparing nanocrystalline austenitic stainless steel plate through deep cooling rolling-rapid annealing - Google Patents
Method for preparing nanocrystalline austenitic stainless steel plate through deep cooling rolling-rapid annealing Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- 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
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- 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
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- 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
- C21D8/0268—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment between cold rolling steps
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- 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
- C21D8/0273—Final recrystallisation annealing
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- 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
- C21D2201/00—Treatment for obtaining particular effects
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- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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Abstract
The invention provides a method for preparing a nanocrystalline austenitic stainless steel plate through deep cooling rolling-rapid annealing and belongs to the field of stainless steel manufacturing. The method comprises the steps that (1) an austenitic stainless steel blank is hot-rolled after being subjected to heat preservation at the temperature of 1150 DEG C-1250 DEG C and then is air-cooled to the room temperature after being water-cooled to 150 DEG C-200 DEG C, and a hot-rolled plate is prepared; (2) deep cooling rolling is conducted, specifically, the hot-rolled plate is subjected to solid solution treatment, after an oxide layer on the surface is removed, deep cooling rolling is conducted, the steel plate is subjected to liquid nitrogen treatment before cold rolling per pass, and a deep cooling rolled stainless steel plate is prepared; and (3) the deep cooling rolled stainless steel plate is air-cooled to the room temperature after being subjected to heat preservation at the temperature of 600 DEG C-850 DEG C, so that the nanocrystalline austenitic stainless steel plate is prepared. The yield strength of the stainless steel plate prepared by the method is 956-1170 MPa, the tensile strength is 1130-1380 MPa, the percentage elongation after fracture is 18%-52%, and the product of strength and elongation is 55000-58080 MPa.%. According to the method for preparing the nanocrystalline austenitic stainless steel plate through deep cooling rolling-rapid annealing, the time is short; the efficiency is high; energy sources are saved; the cost is low; and a sample piece large in section size is easy to produce.
Description
Technical field
The invention belongs to stainless steel and manufacture field, be specifically related to a kind of deep cooling rolling-short annealing and prepare nanocrystalline Ovshinsky
The method of body corrosion resistant plate.
Background technology
Austenitic stainless steel refers to, containing Cr about 18wt%, Ni 8～10wt%, C about 0.1wt%, have face-centered cubic crystal
Structure, has the stainless steel of stable austenite structure in a state of use.With expanding economy, stainless application is more next
More extensive, austenitic stainless steel, owing to containing higher chromium and nickel, can form the oxide-film of densification, and heat resistance is higher simultaneously,
And have nonmagnetic, so austenitic stainless steel has more excellent decay resistance, plasticity, high temperatures than other stainless steels
Energy, mouldability, welding performance, become yield, consumption maximum, and the most a kind of stainless steel of model, usage amount accounts for entirely stainless
The 70% of output of steel, is widely used in chemical industry, ocean engineering, and household supplies (tableware, cabinet, boiler, water heater), automobile is joined
Part, medical apparatus, building materials, the field such as food industry.Austenitic stainless steel is similar with other metal materials most of, and it resists
Tensile strength, yield strength and hardness improve with the reduction of temperature；Plasticity then reduces with temperature and reduces, but critically important
A bit, with the reduction of temperature, its impact toughness reduces slowly, and there is not tough-brittle transition temperature, and therefore austenite is not
Rust steel remains to keep enough plasticity and toughness when very low temperature.
Austenitic stainless steel is nonmagnetic and has high tenacity and plasticity, but usual intensity is relatively low, has Austria at normal temperatures
, during being heated or cooled, all there are not solid-state phase changes, for example in family name soma：304 austenitic stainless steels are metastable state Ovshinskies
The stainless Typical Representative of body, it is easily changed into martensitic microstructure when deformation.Therefore, this kind of steel can not directly pass through
Heat treatment refines, it is necessary to utilize the recrystallization after cold deformation or cold deformation to refine.
Content of the invention
The present invention is directed to metastable state austenitic stainless steel, the present invention proposes a kind of deep cooling rolling-short annealing and prepares Ovshinsky
The method of body corrosion resistant plate；The inventive method utilizes deep cooling to roll and short annealing technology, can be with Reducing distortion amount or avoid often
The complexity of the repeatedly cold rolling-annealing process of rule technique, directly prepares the nanocrystalline austenitic stainless steel of high strength and ductility.Meanwhile,
This technique can also be used for the nanocrystalline preparation field of face-centred cubic structure non-ferrous metal, solves other techniques in room temperature cold working
The problem such as in journey deflection is excessive or exemplar size is less, prepares the nanocrystalline austenite stainless steel plate of high-strength tenacity.
The method that nanocrystalline austenite stainless steel plate is prepared in the deep cooling rolling-short annealing of the present invention, specifically includes as follows
Step：
Step 1, hot rolling：
(1) it by austenitic stainless steel billets, at 1150～1250 DEG C, is incubated 2～4h；
(2) by the austenitic stainless steel billets after insulation, carrying out 5～9 passage hot rollings, start rolling temperature is 1150～1200
DEG C, finishing temperature is 1000～1100 DEG C, and total accumulative pressure rate down is 50～90%, and water-cooled is to after 150～200 DEG C subsequently, air cooling
To room temperature, prepare hot rolled plate；
Step 2, deep cooling rolls：
(1) solution treatment：It by hot rolled plate, is heated to 1020～1050 DEG C, after insulation 20～30min, water-cooled to room temperature, system
Obtain the steel plate after solution treatment；
(2) oxide layer of the surface of steel plate after solution treatment is removed；
(3) roll：Steel plate carries out deep cooling rolling, and cold rolling total accumulative reduction ratio is 40～80%, every time pressure
Rate is 8～10%, carries out liquid nitrogen process to steel plate before every time is cold rolling, prepares deep cooling rolling corrosion resistant plate；Wherein, liquid nitrogen process
Method be：Steel plate is immersed in liquid nitrogen, for the first time liquid nitrogen process time be 20～30min, remaining liquid nitrogen process when
Between be 5～10min；
Step 3, short annealing：
(1) deep cooling is rolled corrosion resistant plate, at 600～850 DEG C, be incubated 3～5min；
(2) by the deep cooling rolling corrosion resistant plate air cooling after annealing to room temperature, nanocrystalline austenite stainless steel plate is prepared.
In described step 1 (2), cooldown rate during water-cooled is 25～35 DEG C/s.
Described step 1, the annealing hot rolled plate microscopic structure preparing is austenite, and average grain size is 20～40 μm,
Even tissue.
Described step 1, hot-rolling arrangement is adopted as Φ 450mm experiment hot milling train.
In described step 2 (1), solution treatment device uses JPX-8-13 chamber type electric resistance furnace.
In described step 2 (1), the hot rolled plate after solution treatment, microscopic structure is austenite structure, average grain size
It is 20～40 μm.
In described step 2 (2), the method for the oxide layer removing the surface of steel plate after solution treatment is：Utilize watery hydrochloric acid
To the hot rolled plate after solution treatment, carry out pickling, remove the oxide layer on its surface, it is ensured that the matter on deep cooling rolling corrosion resistant plate surface
Amount.
In described step 2 (3), liquid nitrogen process is carried out to steel plate, enable steel plate to cool down uniformly, after taking out from liquid nitrogen
Being immediately fed into milling train to roll, steel plate is continued to put in liquid nitrogen after terminating by every time rolling immediately to be soaked.
In described step 2, apparatus for cold rolling uses Φ 180mm duo mill.
Described step 3, annealing device uses chamber type electric resistance furnace.
In described step 1, the thickness of austenitic stainless steel billets is 50～80mm, and the thickness of hot rolled plate is 5～10mm；
The nanocrystalline austenite stainless steel plate thickness that described step 3 prepares is 1～6mm.
Described austenite stainless steel plate is 304 austenite stainless steel plates or 316 austenite stainless steel plates.
304 described austenite stainless steel plates, containing composition and weight/mass percentage composition thereof be：C：0.04～0.08%, Si：
0.2～0.8%, Mn：1.2～2.0%, Cr：17～20%, Ni：7.0～9.0%, P：0.01～0.1%, S≤0.005%,
Balance of Fe and inevitable impurity.
316 described austenite stainless steel plates, containing composition and weight/mass percentage composition thereof be：C：0.04～0.08%, Si：
0.2～0.8%, Mn：1.2～2.0%, Cr：16～18%, Ni：10.0～14%, P：0.01～0.1%, S≤0.005%,
Balance of Fe and inevitable impurity.
The nanocrystalline austenite stainless steel plate that described step 3 prepares, yield strength is 956～1170MPa, tensile strength
Being 1130～1380MPa, elongation after fracture is 18～52%, and strength and ductility product is 55000～58080MPa %.
The nanocrystalline austenite stainless steel plate that described step 3 prepares, microstructure is for waiting austenitic stainless steel group of axle
Knit the permanent set martensitic structure returning austenite with non-inversion, average grain size≤100nm.
The method that nanocrystalline austenite stainless steel plate is prepared in the deep cooling rolling-short annealing of the present invention, with prior art phase
Relatively, there is following significant advantage and effect：
(1) present invention uses deep cooling rolling-rta technique, and grain refining effect is notable, hence it is evident that improves and moulds by force
Long-pending.Crystal grain can be refined to 100nm rank, and yield strength is up to 1170MPa, and tensile strength is up to 1380MPa, and strength and ductility product reaches
58080MPa %.
(2) present invention uses deep cooling rolling-short annealing, and cooling medium liquid nitrogen derives from air, low cost；Rolling
Rear employing short annealing, time fugitive rate is high, with short production cycle, saves the energy compared with the annealing taken turns more several than other modes, reduces
Manufacturing cost.The present invention is readily produced out the bigger exemplar of cross dimensions.
(3) present invention is by advanced deep cooling rolling and rta technique, can be with Reducing distortion amount or avoid conventional work
The complexity of the repeatedly cold rolling-annealing process of skill, directly prepares high-strength nanocrystalline austenitic stainless steel；Meanwhile, this technique also may be used
For the nanocrystalline preparation field of face-centred cubic structure non-ferrous metal, solve other techniques deflection during room temperature cold working
The problems such as excessive or exemplar chi is less.
(4) present invention process flow process is short, energy consumption is low, efficiency is high, production cost is low, manufacture method is simple.
Brief description
Deep cooling rolling-the short annealing of Fig. 1 embodiment of the present invention is prepared in the method for nanocrystalline austenite stainless steel plate deep
Cold rolling-rta technique schematic diagram；
The metallographic structure of the hot rolled plate of Fig. 2 embodiment of the present invention 3；
The optical microstructure of the deep cooling rolling corrosion resistant plate that the step 2 of Fig. 3 embodiment of the present invention 3 prepares；
The ESEM shape appearance figure of the nanocrystalline austenite stainless steel plate that the step 3 of Fig. 4 embodiment of the present invention 3 prepares；
The transmission electron microscope picture of the nanocrystalline austenite stainless steel plate that the step 3 of Fig. 5 embodiment of the present invention 3 prepares.
Detailed description of the invention
In following example, hot-rolling arrangement is adopted as Φ 450mm experiment hot milling train；Solution treatment device uses JPX-8-13
Chamber type electric resistance furnace；Apparatus for cold rolling uses Φ 180mm duo mill；Annealing device uses chamber type electric resistance furnace；In step 2 (1), annealing
The size of hot rolled plate is 105mm × 40mm × 5mm.
Deep cooling rolling-the short annealing of following example is prepared deep cooling in the method for nanocrystalline austenite stainless steel plate and is rolled
System-rta technique schematic diagram is as shown in Figure 1.
Embodiment 1
A kind of method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing, specifically includes following steps：
Step 1, hot rolling：
(1) it by 304 austenitic stainless steel billets that 50mm is thick, at 1150 DEG C, is incubated 4h；Wherein：
304 described austenite stainless steel plates, containing composition and weight/mass percentage composition thereof be：C：0.08%, Si：
0.75%, Mn：2.0%, Cr：18.45%, Ni：8.0%, P：0.0045%, S：0.003, balance of Fe and inevitably miscellaneous
Matter；
(2) by the austenitic stainless steel billets after insulation, carrying out 7 passage hot rollings, start rolling temperature is 1170 DEG C, finishing temperature
Being 1000 DEG C, total accumulative pressure rate down is 90%, subsequently with water-cooled that cooldown rate is 25 DEG C/s to after 150 DEG C, air cooling to room temperature,
Prepare the thick hot rolled plate of 5mm；
Step 2, deep cooling rolls：
(1) solution treatment：Hot rolled plate is intercepted the sheet material of 105mm × 40mm × 5mm size, is heated to 1050 DEG C, insulation
After 30min, water-cooled to room temperature, prepare the steel plate after solution treatment；
Hot rolled plate after solution treatment, microscopic structure is austenite structure, and average grain size is 20 μm；
(2) oxide layer of the surface of steel plate after solution treatment is removed：Utilize watery hydrochloric acid to the hot rolled plate after solution treatment, enter
Row pickling, removes the oxide layer on its surface, it is ensured that the quality on deep cooling rolling corrosion resistant plate surface；
(3) roll：Steel plate carries out 10 passage deep cooling rollings, and cold rolling total accumulative reduction ratio is 50%, the pressure of each passage
Lower rate average out to 5%, carries out liquid nitrogen process to steel plate before every time is cold rolling, prepared thickness is the deep cooling rolling stainless steel of 2.5mm
Plate；Wherein, the method that liquid nitrogen is processed is：Being immersed in steel plate in liquid nitrogen, the time that liquid nitrogen is processed for the first time is 30min, remaining
The time that liquid nitrogen is processed is 5min；
Step 3, short annealing：
(1) deep cooling is rolled corrosion resistant plate, at 650 DEG C, be incubated 5min；
(2) by the deep cooling rolling corrosion resistant plate air cooling after annealing to room temperature, nanocrystalline austenite stainless steel plate is prepared.
The nanocrystalline austenite stainless steel plate that the present embodiment prepares, carries out detection and analyzes to microscopic structure, and microscopic structure is
Reverse transformation wait the tiny austenite structure of axle, average grain size is about 100nm, observe simultaneously a small amount of remaining not
The martensite residual of reverse transformation.
The nanocrystalline austenite stainless steel plate that the present embodiment prepares, yield strength is 1158MPa, and tensile strength is
1360MPa, elongation after fracture is 18%；Strength and ductility product is 24480MPa %.
Embodiment 2
A kind of method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing, specifically includes following steps：
Step 1, hot rolling：
(1) it by 304 austenitic stainless steel billets that 50mm is thick, at 1250 DEG C, is incubated 3h；Wherein：
304 described austenite stainless steel plates, containing composition and weight/mass percentage composition thereof be：C：0.08%, Si：
0.75%, Mn：2.0%, Cr：18.45%, Ni：8.0%, P：0.0045%, S：0.003, balance of Fe and inevitably miscellaneous
Matter；
(2) by the austenitic stainless steel billets after insulation, carrying out 7 passage hot rollings, start rolling temperature is 1170 DEG C, finishing temperature
Being 1000 DEG C, total accumulative pressure rate down is 90%, subsequently with water-cooled that cooldown rate is 35 DEG C/s to after 200 DEG C, air cooling to room temperature,
Prepare the thick hot rolled plate of 5mm；
Step 2, deep cooling rolls：
(1) solution treatment：Hot rolled plate is intercepted the sheet material of 105mm × 40mm × 5mm size, is heated to 1020 DEG C, insulation
After 20min, water-cooled to room temperature, prepare the steel plate after solution treatment；
Hot rolled plate after solution treatment, microscopic structure is austenite structure, and average grain size is 25 μm；
(2) oxide layer of the surface of steel plate after solution treatment is removed：Utilize watery hydrochloric acid to the hot rolled plate after solution treatment, enter
Row pickling, removes the oxide layer on its surface, it is ensured that the quality on deep cooling rolling corrosion resistant plate surface；
(3) roll：Steel plate carries out 12 passage deep cooling rollings, and cold rolling total accumulative reduction ratio is 60%, under each passage
Rate average out to 10%, carries out liquid nitrogen process to steel plate before every time is cold rolling, prepared thickness is 2mm deep cooling rolling corrosion resistant plate；Its
In, the method that liquid nitrogen is processed is：Being immersed in steel plate in liquid nitrogen, the time that liquid nitrogen is processed for the first time is 30min, at remaining liquid nitrogen
The time of reason is 5min；
Step 3, short annealing：
(1) deep cooling is rolled corrosion resistant plate, at 700 DEG C, be incubated 5min；
(2) by the deep cooling rolling corrosion resistant plate air cooling after annealing to room temperature, nanocrystalline austenite stainless steel plate is prepared.
The nanocrystalline austenite stainless steel plate that the present embodiment prepares, carries out detection and analyzes to microscopic structure, and microscopic structure is
Reverse transformation wait the tiny austenite structure of axle, average grain size is about 100nm, observe simultaneously a small amount of remaining not
The martensite residual of reverse transformation.
The nanocrystalline austenite stainless steel plate that the present embodiment prepares, yield strength is 980MPa, and tensile strength is
1170MPa, elongation after fracture is 26%；Strength and ductility product is 30420MPa %.
Embodiment 3
A kind of method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing, specifically includes following steps：
Step 1, hot rolling：
(1) it by 304 austenitic stainless steel billets that 50mm is thick, at 1150 DEG C, is incubated 4h；Wherein：
304 described austenite stainless steel plates, containing composition and weight/mass percentage composition thereof be：C：0.08%, Si：0.5%,
Mn：1.24%, Cr：19.07%, Ni：7.98%, P：0.0068%, S：0.0062%, balance of Fe and inevitably miscellaneous
Matter；
(2) by the austenitic stainless steel billets after insulation, carrying out 7 passage hot rollings, start rolling temperature is 1170 DEG C, finishing temperature
Being 1000 DEG C, total accumulative pressure rate down is 90%, subsequently with water-cooled that cooldown rate is 30 DEG C/s to after 180 DEG C, air cooling to room temperature,
Prepare the thick hot rolled plate of 5mm；The metallographic structure of hot rolled plate is as shown in Figure 2；
Step 2, deep cooling rolls：
(1) solution treatment：Hot rolled plate is intercepted the sheet material of 105mm × 40mm × 5mm size, is heated to 1020 DEG C, insulation
After 20min, water-cooled to room temperature, prepare the steel plate after solution treatment；
Hot rolled plate after solution treatment, microscopic structure is austenite structure, and average grain size is 20 μm；
(2) oxide layer of the surface of steel plate after solution treatment is removed：Utilize watery hydrochloric acid to the hot rolled plate after solution treatment, enter
Row pickling, removes the oxide layer on its surface, it is ensured that the quality on deep cooling rolling corrosion resistant plate surface；
(3) roll：Steel plate carries out 12 passage deep cooling rollings, and cold rolling total accumulative reduction ratio is 65%, under each passage
Rate average out to 10%, carries out liquid nitrogen process to steel plate before every time is cold rolling, prepared thickness is 1.75mm deep cooling rolling corrosion resistant plate；
Wherein, the method that liquid nitrogen is processed is：Being immersed in steel plate in liquid nitrogen, the time that liquid nitrogen is processed for the first time is 30min, remaining liquid nitrogen
The time processing is 5min；The optical microstructure of deep cooling rolling corrosion resistant plate is as shown in Figure 3；
Step 3, short annealing：
(1) deep cooling is rolled corrosion resistant plate, at 700 DEG C, be incubated 5min；
(2) by the deep cooling rolling corrosion resistant plate air cooling after annealing to room temperature, nanocrystalline austenite stainless steel plate is prepared.
As shown in Figure 4, it is saturating for the ESEM shape appearance figure of the nanocrystalline austenite stainless steel plate that the present embodiment step 3 prepares
Radio mirror figure as it is shown in figure 5, carry out detection to microscopic structure and analyze, microscopic structure be reverse transformation wait the tiny austenite group of axle
Knitting, average grain size is about 100nm, observes the martensite residual of a small amount of remaining non-reverse transformation simultaneously.
The nanocrystalline austenite stainless steel plate that the present embodiment prepares, yield strength is 1060MPa, and tensile strength is
1280MPa, elongation after fracture is 32%；Strength and ductility product is 40960MPa %.
Embodiment 4
A kind of method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing, specifically includes following steps：
Step 1, hot rolling：
(1) it by 304 austenitic stainless steel billets that 50mm is thick, at 1200 DEG C, is incubated 3h；Wherein：
304 described austenite stainless steel plates, containing composition and weight/mass percentage composition thereof be：C：0.08%, Si：0.5%,
Mn：1.24%, Cr：19.07%, Ni：7.98%, P：0.0068%, S：0.0062%, balance of Fe and inevitably miscellaneous
Matter；
(2) by the austenitic stainless steel billets after insulation, carrying out 7 passage hot rollings, start rolling temperature is 1170 DEG C, finishing temperature
Being 1000 DEG C, total accumulative pressure rate down is 90%, subsequently with water-cooled that cooldown rate is 25 DEG C/s to after 180 DEG C, air cooling to room temperature,
Prepare the thick hot rolled plate of 5mm；
Step 2, deep cooling rolls：
(1) solution treatment：Hot rolled plate is intercepted the sheet material of 105mm × 40mm × 5mm size, is heated to 1020～1050
DEG C, after insulation 20～30min, water-cooled to room temperature, prepare the steel plate after solution treatment；
Hot rolled plate after solution treatment, microscopic structure is austenite structure, and average grain size is 20～40 μm；
(2) oxide layer of the surface of steel plate after solution treatment is removed：Utilize watery hydrochloric acid to the hot rolled plate after solution treatment, enter
Row pickling, removes the oxide layer on its surface, it is ensured that the quality on deep cooling rolling corrosion resistant plate surface；
(3) roll：Steel plate carries out 14 passage deep cooling rollings, and cold rolling total accumulative reduction ratio is 70%, under each passage
Rate average out to 10%, carries out liquid nitrogen process to steel plate before every time is cold rolling, prepared thickness is 1.5mm deep cooling rolling corrosion resistant plate；
Wherein, the method that liquid nitrogen is processed is：Being immersed in steel plate in liquid nitrogen, the time that liquid nitrogen is processed for the first time is 25min, remaining liquid nitrogen
The time processing is 5min；
Step 3, short annealing：
(1) deep cooling is rolled corrosion resistant plate, at 750 DEG C, be incubated 3min；
(2) by the deep cooling rolling corrosion resistant plate air cooling after annealing to room temperature, nanocrystalline austenite stainless steel plate is prepared.
The nanocrystalline austenite stainless steel plate that the present embodiment prepares, yield strength is 956MPa, and tensile strength is
1130MPa, elongation after fracture is 52%；Strength and ductility product is 58760MPa %.
The present embodiment prepare nanocrystalline austenite stainless steel plate, microstructure for wait axle austenite stainless structure of steel and
The permanent set martensitic structure of austenite is returned in non-inversion, and average grain size is less than 100nm.
Embodiment 5
A kind of method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing, specifically includes following steps：
Step 1, hot rolling：
(1) it by 316 austenitic stainless steel billets that 50mm is thick, at 1150 DEG C, is incubated 4h；Wherein：
316 described austenite stainless steel plates, containing composition and weight/mass percentage composition thereof be：C：0.04～0.08%, Si：
0.2～0.8%, Mn：1.2～2.0%, Cr：16～18%, Ni：10.0～14%, P：0.01～0.1%, S 0.005%, remaining
Amount is Fe and inevitable impurity.
(2) by the austenitic stainless steel billets after insulation, carrying out 5 passage hot rollings, start rolling temperature is 1200 DEG C, finishing temperature
Being 1100 DEG C, total accumulative pressure rate down is 88%, subsequently with water-cooled that cooldown rate is 35 DEG C/s to after 200 DEG C, air cooling to room temperature,
Prepare the thick hot rolled plate of 6mm；
Step 2, deep cooling rolls：
(1) solution treatment：Hot rolled plate is intercepted the sheet material of 105mm × 40mm × 6mm size, is heated to 1020 DEG C, insulation
After 30min, water-cooled to room temperature, prepare the steel plate after solution treatment；
Hot rolled plate after solution treatment, microscopic structure is austenite structure, and average grain size is 35 μm；
(2) oxide layer of the surface of steel plate after solution treatment is removed：Utilize watery hydrochloric acid to the hot rolled plate after solution treatment, enter
Row pickling, removes the oxide layer on its surface, it is ensured that the quality on deep cooling rolling corrosion resistant plate surface；
(3) roll：Steel plate carries out 10 passage deep cooling rollings, and cold rolling total accumulative reduction ratio is 50%, under each passage
Rate average out to 5%, carries out liquid nitrogen process to steel plate before every time is cold rolling, prepared thickness is 3mm deep cooling rolling corrosion resistant plate；Its
In, the method that liquid nitrogen is processed is：Being immersed in steel plate in liquid nitrogen, the time that liquid nitrogen is processed for the first time is 20min, at remaining liquid nitrogen
The time of reason is gmin；
Step 3, short annealing：
(1) deep cooling is rolled corrosion resistant plate, at 750 DEG C, be incubated 3min；
(2) by the deep cooling rolling corrosion resistant plate air cooling after annealing to room temperature, nanocrystalline austenite stainless steel plate is prepared.
The nanocrystalline austenite stainless steel plate that the present embodiment prepares, yield strength is 1170MPa, and tensile strength is
1380MPa, elongation after fracture is 20%；Strength and ductility product is 27600MPa.%.
The present embodiment prepare nanocrystalline austenite stainless steel plate, microstructure for wait axle austenite stainless structure of steel and
The permanent set martensitic structure of austenite, average grain size≤100nm are returned in non-inversion.
Embodiment 6
A kind of method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing, specifically includes following steps：
Step 1, hot rolling：
(1) it by 316 austenitic stainless steel billets that 50mm is thick, at 1250 DEG C, is incubated 2h；Wherein：
316 described austenite stainless steel plates, containing composition and weight/mass percentage composition thereof be：C：0.04～0.08%, Si：
0.2～0.8%, Mn：1.2～2.0%, Cr：16～18%, Ni：10.0～14%, P：0.01～0.1%, S 0.005%, remaining
Amount is Fe and inevitable impurity.
(2) by the austenitic stainless steel billets after insulation, carrying out 10 passage hot rollings, start rolling temperature is 1150 DEG C, finish to gauge temperature
Degree is 1000 DEG C, and total accumulative pressure rate down is 88%, and subsequently with water-cooled that cooldown rate is 25 DEG C/s to after 150 DEG C, air cooling is to room
Temperature, prepares the thick hot rolled plate of 6mm；
Step 2, deep cooling rolls：
(1) solution treatment：Hot rolled plate is intercepted the sheet material of 105mm × 40mm × 6mm size, is heated to 1050 DEG C, insulation
After 20min, water-cooled to room temperature, prepare the steel plate after solution treatment；
Hot rolled plate after solution treatment, microscopic structure is austenite structure, and average grain size is 40 μm；
(2) oxide layer of the surface of steel plate after solution treatment is removed：Utilize watery hydrochloric acid to the hot rolled plate after solution treatment, enter
Row pickling, removes the oxide layer on its surface, it is ensured that the quality on deep cooling rolling corrosion resistant plate surface；
(3) roll：Steel plate carries out 14 passage deep cooling rollings, and cold rolling total accumulative reduction ratio is 70%, under each passage
Rate average out to 5%, carries out liquid nitrogen process to steel plate before every time is cold rolling, prepared thickness is 1.8mm deep cooling rolling corrosion resistant plate；Its
In, the method that liquid nitrogen is processed is：Being immersed in steel plate in liquid nitrogen, the time that liquid nitrogen is processed for the first time is 25min, at remaining liquid nitrogen
The time of reason is 10min；
Step 3, short annealing：
(1) deep cooling is rolled corrosion resistant plate, at 750 DEG C, be incubated 3min；
(2) by the deep cooling rolling corrosion resistant plate air cooling after annealing to room temperature, nanocrystalline austenite stainless steel plate is prepared.
The nanocrystalline austenite stainless steel plate that the present embodiment prepares, yield strength is 1020MPa, and tensile strength is
1210MPa, elongation after fracture is 48%；Strength and ductility product is 58080MPa %.
The present embodiment prepare nanocrystalline austenite stainless steel plate, microstructure for wait axle austenite stainless structure of steel and
The permanent set martensitic structure of austenite, average grain size≤100nm are returned in non-inversion.
Claims (10)
1. the method that nanocrystalline austenite stainless steel plate is prepared in a deep cooling rolling-short annealing, it is characterised in that include as follows
Step：
Step 1, hot rolling：
(1) it by austenitic stainless steel billets, at 1150～1250 DEG C, is incubated 2～4h；
(2) by the austenitic stainless steel billets after insulation, carrying out 5～9 passage hot rollings, start rolling temperature is 1150～1200 DEG C, eventually
Rolling temperature is 1000～1100 DEG C, and total accumulative pressure rate down is 50～90%, and water-cooled is to after 150～200 DEG C subsequently, and air cooling is to room
Temperature, prepares hot rolled plate；
Step 2, deep cooling rolls：
(1) solution treatment：By hot rolled plate, being heated to 1020～1050 DEG C, after insulation 20～30min, water-cooled, to room temperature, prepares solid
Steel plate after molten process；
(2) oxide layer of the surface of steel plate after solution treatment is removed；
(3) roll：Steel plate carries out deep cooling rolling, and cold rolling total accumulative reduction ratio is 40～80%, and every time reduction ratio is 8
～10%, before every time is cold rolling, liquid nitrogen process is carried out to steel plate, prepare deep cooling rolling corrosion resistant plate；Wherein, the side that liquid nitrogen is processed
Method is：Being immersed in steel plate in liquid nitrogen, the time that liquid nitrogen is processed for the first time is 20～30min, and the time that remaining liquid nitrogen is processed is 5
～10min；
Step 3, short annealing：
(1) deep cooling is rolled corrosion resistant plate, at 600～850 DEG C, be incubated 3～5min；
(2) by the deep cooling rolling corrosion resistant plate air cooling after annealing to room temperature, nanocrystalline austenite stainless steel plate is prepared.
2. the method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing according to claim 1, it is special
Levying and being, in described step 1 (2), cooldown rate during water-cooled is 25～35 DEG C/s.
3. the method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing according to claim 1, it is special
Levying and being, in described step 2 (1), the hot rolled plate after solution treatment, microscopic structure is austenite structure, average grain size
It is 20～40 μm.
4. the method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing according to claim 1, it is special
Levying and being, in described step 2 (2), the method for the oxide layer removing the surface of steel plate after solution treatment is：Utilize watery hydrochloric acid pair
Hot rolled plate after solution treatment, carries out pickling, removes the oxide layer on its surface, it is ensured that the matter on deep cooling rolling corrosion resistant plate surface
Amount.
5. the method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing according to claim 1, it is special
Levying and being, in described step 1, the thickness of austenitic stainless steel billets is 50～80mm, and the thickness of hot rolled plate is 5～10mm；
The nanocrystalline austenite stainless steel plate thickness that described step 3 prepares is 1～6mm.
6. the method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing according to claim 1, it is special
Levying and being, described austenite stainless steel plate is 304 austenite stainless steel plates or 316 austenite stainless steel plates.
7. the method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing according to claim 6, it is special
Levy and be, 304 described austenite stainless steel plates, containing composition and weight/mass percentage composition thereof be：C：0.04～0.08%, Si：
0.2～0.8%, Mn：1.2～2.0%, Cr：17～20%, Ni：7.0～9.0%, P：0.01～0.1%, S≤0.005%,
Balance of Fe and inevitable impurity；316 described austenite stainless steel plates, containing composition and weight/mass percentage composition thereof be：
C：0.04～0.08%, Si：0.2～0.8%, Mn：1.2～2.0%, Cr：16～18%, Ni：10.0～14%, P：0.01～
0.1%, S≤0.005%, balance of Fe and inevitable impurity.
8. the method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing according to claim 1, it is special
Levying and being, described step 1, hot-rolling arrangement is adopted as Φ 450mm experiment hot milling train；In described step 2 (1), solution treatment
Device uses JPX-8-13 chamber type electric resistance furnace；In described step 2, apparatus for cold rolling uses Φ 180mm duo mill；Described step
Rapid 3, annealing device uses chamber type electric resistance furnace.
9. the method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing according to claim 1, it is special
Levying and being, the nanocrystalline austenite stainless steel plate that described step 3 prepares, yield strength is 956～1170MPa, tensile strength
Being 1130～1380MPa, elongation after fracture is 18～52%, and strength and ductility product is 55000～58080MPa %.
10. the method that nanocrystalline austenite stainless steel plate is prepared in deep cooling rolling-short annealing according to claim 1, its
Being characterised by, the nanocrystalline austenite stainless steel plate that described step 3 prepares, microstructure is for waiting austenitic stainless steel group of axle
Knit the permanent set martensitic structure returning austenite with non-inversion, average grain size≤100nm.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA27690U (en) * | 2007-07-02 | 2007-11-12 | Karpenko Physical And Mechanic | Method for improving mechanical properties of austenitic steel in hydrogen environment under high pressure |
| CN102051564A (en) * | 2011-01-21 | 2011-05-11 | 中南大学 | Method for preparing ultra-fine crystal grain high-strength high-toughness copper alloy strip |
| CN104451082A (en) * | 2014-12-10 | 2015-03-25 | 东北大学 | Preparation method of 304 austenitic stainless steel having grain size less than 100nm |
| CN104711473A (en) * | 2015-01-28 | 2015-06-17 | 燕山大学 | Nonmagnetic biomedical implant material and preparation method thereof |
| CN105220089A (en) * | 2014-06-25 | 2016-01-06 | 罗伟 | The preparation technology of a kind of raising 6061 aluminium alloy capabilities |
| CN105543693A (en) * | 2015-12-17 | 2016-05-04 | 东北大学 | Deep cold rolling method for Invar steel belt |
-
2016
- 2016-08-31 CN CN201610771756.5A patent/CN106435131B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA27690U (en) * | 2007-07-02 | 2007-11-12 | Karpenko Physical And Mechanic | Method for improving mechanical properties of austenitic steel in hydrogen environment under high pressure |
| CN102051564A (en) * | 2011-01-21 | 2011-05-11 | 中南大学 | Method for preparing ultra-fine crystal grain high-strength high-toughness copper alloy strip |
| CN105220089A (en) * | 2014-06-25 | 2016-01-06 | 罗伟 | The preparation technology of a kind of raising 6061 aluminium alloy capabilities |
| CN104451082A (en) * | 2014-12-10 | 2015-03-25 | 东北大学 | Preparation method of 304 austenitic stainless steel having grain size less than 100nm |
| CN104711473A (en) * | 2015-01-28 | 2015-06-17 | 燕山大学 | Nonmagnetic biomedical implant material and preparation method thereof |
| CN105543693A (en) * | 2015-12-17 | 2016-05-04 | 东北大学 | Deep cold rolling method for Invar steel belt |
Non-Patent Citations (2)
| Title |
|---|
| BARNA ROY等: "Effect of cryorolling on the microstructure and tensile properties of bulk nano-austenitic stainless steel", 《MATERIALS SCIENCE & ENGINEERING A》 * |
| 李鹏燕: "超细晶粒奥氏体不锈钢的制备与组织性能研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
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