CN107805769A - The rolling of high-performance AlN/AZ91D magnesium-based composite materials and heat treatment method - Google Patents
The rolling of high-performance AlN/AZ91D magnesium-based composite materials and heat treatment method Download PDFInfo
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- CN107805769A CN107805769A CN201711060886.9A CN201711060886A CN107805769A CN 107805769 A CN107805769 A CN 107805769A CN 201711060886 A CN201711060886 A CN 201711060886A CN 107805769 A CN107805769 A CN 107805769A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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Abstract
The present invention relates to a kind of rolling of high-performance AlN/AZ91D magnesium-based composite materials and heat treatment method, by carrying out traditional rolling deformation and Technology for Heating Processing processing to the material, with reference to the distinctive institutional framework of particle reinforced magnesium base compound material and strengthening mechanism, technological parameter is optimized, so as to prepare the more excellent AlN/AZ91D magnesium-based composite material sheet materials of performance, propose the rolling specifically for the composite and Technology for Heating Processing, not only realize the rolling deformation of the cast magnesium alloy (AZ91 alloys) as matrix alloy, so that the mechanical property of AlN/AZ91D magnesium-based composite materials has obtained further significantly improving, its tensile strength and plasticity are considerably beyond matrix AZ91 alloys and most of traditional wrought magnesium alloy.Further, since technique is simple, rolling deformation when roll without heating, raw material preparation facilities is safe and reliable the features such as, the patent can be widely applied to industrialized production.
Description
Technical field
The present invention relates to a kind of rolling of high-performance AlN/AZ91D magnesium-based composite materials and heat treatment method, with situ
Grain strengthens the AlN/AZ91D magnesium-based composite material (patent No.s：201510882938.5) to deform strand, using rolling deformation with after
Continuous Technology for Heating Processing prepares the AlN/AZ91D magnesium-based composite material sheet materials that mechanical property significantly improves, industrial so as to improve
The mechanical property of wide variety of AZ91D magnesium alloys.
Background technology
Wrought magnesium alloy is extensive with the mechanical property and crystallized ability more excellent than cast magnesium alloy due to it
Using, but the intrinsic low-intensity of magnesium alloy and inductile limit its application as high-performance metal structural material, therefore
The new magnesium-based composite material of developing low-cost High-strength high-plasticity energy has become an important directions and the way of magnesium alloy development
Footpath.Patent applicant has been prepared using home position strengthening patented technology can be with the AlN/ of low cost with High-strength high-plasticity
AZ91D magnesium-based composite materials ingot casting (strand preparation method and device see applicant granted patent ZL201510670943.X and
ZL201510882938.5), the high-ductility that the material has is that the mechanics of the composite is further improved by plastic deformation
Performance provides advantage.Therefore, its application is further lifted and expands for the mechanical property of the composite,
Obtain the composite rolling and Technology for Heating Processing turn at present its can industrially large-scale promotion use there is an urgent need to.
Because magnesium is close-packed hexagonal structure (HCP), non-basal slip is difficult to start at room temperature, and this causes magnesium alloy and magnesium-based
Composite intensity at room temperature and plasticity are low.Low intensity and plasticity govern magnesium alloy and magnesium-based composite material in room always
The development and application of temperature plastic deformation, for the cast magnesium alloy of AZ series, its poor plasticity causes to be difficult logical
Plastic deformation is crossed to improve mechanical property and prepare the products such as sheet material, section bar and expand application.Therefore, intensity can only be used
The wrought magnesium alloys such as low, the preferable AZ31 of plasticity prepare sheet material and section bar, and the cast magnesium alloy such as higher AZ91 of room temperature strength
Even across limited pyroplastic deformation, the lifting of its mechanical property is not notable, and technique be present in its deformation process
Complicated, processing environment requires high, equipment is complicated, prepares the problems such as cost height, and this has a strong impact on and constrains traditional magnesium alloy material
The development and application of material.Therefore, industrially simple there is an urgent need to obtain a kind of technique, cost is low, and the deformed Mg of function admirable is closed
Gold.
The content of the invention
Technical problems to be solved
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of high-performance AlN/AZ91D magnesium-based composite materials
Rolling and heat treatment method, deformation cost is reduced while improving the composite materials property.
Technical scheme
A kind of rolling of high-performance AlN/AZ91D magnesium-based composite materials and heat treatment method, it is characterised in that step is as follows：
Step 1：AlN/AZ91D magnesium-based composite material strands are put into Muffle furnace and carry out solution treatment, solid solubility temperature is
400-420 DEG C, the time is 16-24 hours；
Step 2：Material is taken out out of Muffle furnace, is put into originally quenching-in water；
Step 3：Composite ingot casting after quenching is cut into and rolls plate shape, surface polishes smooth；
Step 4：The plate that rolls prepared is put into Muffle furnace at 320-350 DEG C after preheating 5-15min, is put into two rollings
Machine is rolled, mill speed 0.15-0.3m/s, and initial and final passage volume under pressure is no more than 5%, pony-roughing pass volume under pressure
10%-15%, every time 5-10min that annealed at 320-350 DEG C；When total rolling reduction is 35-45%, stop rolling
System；The roll is without heating；
Step 5：The roller sheet rolled is put into Muffle furnace, taken out at 80-110 DEG C after timeliness 35-45 hours, is completed
Rolling and heat treatment.
Beneficial effect
A kind of rolling of high-performance AlN/AZ91D magnesium-based composite materials proposed by the present invention and heat treatment method, for casting
The characteristics of state AlN/AZ91D raw material High-strength high-plasticities, the present invention carry out material using the method for tradition rolling plus subsequent heat treatment
The deformation of material and the lifting of mechanical property.By carrying out traditional rolling deformation and Technology for Heating Processing processing to the material, with reference to
The distinctive institutional framework of particle reinforced magnesium base compound material and strengthening mechanism, are optimized to technological parameter, so as to prepare
The more excellent AlN/AZ91D magnesium-based composite material sheet materials of performance, it is proposed that at the rolling and heat specifically for the composite
Science and engineering skill, the rolling deformation of the cast magnesium alloy (AZ91 alloys) as matrix alloy is not only realized, and due to the present invention
In the creativeness invention of magnesium alloy rolling process aspect so that the mechanical property of AlN/AZ91D magnesium-based composite materials is entered
One step is significantly improved, and its tensile strength and plasticity are closed considerably beyond matrix AZ91 alloys and most of traditional deformed Mg
Gold.Further, since technique is simple, rolling deformation when roll without heating, raw material preparation facilities is safe and reliable the features such as, this is special
Profit can be widely applied to industrialized production.
This process advantage is that the operation of rolling can be carried out on common duo mill, only by controlled rolling before and after
Heat treatment temperature and time and rolling reduction can be achieved with significantly improving for composite board performance.Because technique is joined
Number is simple and easy to control, and roll is not heated during rolling, and simple to operate, cost is cheap.Thus this patent can enter
One step promotes the industrialized production of high performance magnesium alloy board.
Magnesium-based composite material sheet material (see Fig. 2) prepared by the present invention, crystallite dimension significantly refines, and is averaged by solid solution state
60 μm or so of crystallite dimension is reduced to 20 μm or so after rolling, and reinforcing particle distribution and matrix are more uniformly distributed.Closing
In golden performance, compared with matrix alloy AZ91, the tensile property of AlN/AZ91D composite boards prepared by this patent can reach
362Mpa, yield strength is close to 300Mpa, and fracture elongation is also maintained at 9% or so (see Fig. 3, Fig. 4 and table 1), exceeds well over
AZ91D (GB/T 19078-2003) tensile strength 160Mpa, yield strength 110MPa and the tensile property of elongation percentage 2%.Cause
This, the realization of patent of the present invention, will greatly simplify the production technology of magnesium alloy plate, reduces production cost, effectively solves AZ91
Magnesium alloy plate is difficult to rolling deformation and handles this subject matter, promotes magnesium alloy plate in the hair of field of industrial production
Exhibition.
Brief description of the drawings
Fig. 1：The rolling of AlN/AZ91D magnesium-based composite materials and Technology for Heating Processing flow chart
Fig. 2：The AlN/AZ91D magnesium-based composite material roller sheets of different distortion amount
Fig. 3：AlN/AZ91D magnesium-based composite material sheet tensile samples after rolling and aging strengthening model
Fig. 4：The stress-strain diagram of the AlN/AZ91D magnesium-based composite material rolled plate samples of aging state
Embodiment
In conjunction with embodiment, accompanying drawing, the invention will be further described：
Blank used in the present invention is AlN/AZ91D magnesium-based composite materials ingot casting (patent 201510882938.5), should
Although ingot casting is with higher temperature-room type plasticity, in order to prepare the rolled plate with more excellent mechanical performance, it is necessary to elder generation
Special solid solution and Water Quenching are carried out to ingot casting, rolling and Ageing Treatment (Fig. 1 is shown in technological process) is then carried out, was rolling
Draught per pass, roll rotational speed and every time annealing temperature and time are strictly controlled in journey.And each rolling mill practice
The optimal collocation of parameter, it is the final key for obtaining the low side of high-strength high-plasticity and splitting the magnesium alloy rolling plates of tendency.
Ф 100 × 130 AlN/AZ91 magnesium-based composite materials ingot casting is used as original blank, its preparation method referenced patent
ZL201510882938.5。
Specific implementation process is as follows：
Embodiment 1
1. using Ф 100 × 130 AlN/AZ91 magnesium-based composite materials ingot casting as original blank, its preparation method is with reference to special
Sharp ZL201510882938.5；
2. AlN/AZ91D magnesium-based composite material strands are put into Muffle furnace, solution treatment is carried out at 415 DEG C, is dissolved
Time is 24 hours.
After 3. solution treatment terminates, material is taken out out of Muffle furnace, is put into originally quenching-in water.
4. the composite ingot casting after quenching is cut into and rolls plate shape, surface polishes smooth, as shown in Figure 2.
5. the plate that rolls prepared is put into Muffle furnace at 350 DEG C after preheating 5-15min, it is put into duo mill and is rolled
System (roll is without heating).Mill speed is 0.25m/s, and initial and final passage volume under pressure is no more than 5%, and pony-roughing pass pushes
Amount 10%, every time 5-10min that annealed at 350 DEG C.When total rolling reduction is 40%, stop rolling.
6. the roller sheet rolled is put into Muffle furnace, timeliness is taken out after 40 hours at 100 DEG C.
Sheet tensile sample is cut, as shown in figure 3, carrying out Mechanics Performance Testing.
Embodiment 2：
1. using Ф 100 × 130 AlN/AZ91 magnesium-based composite materials ingot casting as original blank, its preparation method is with reference to special
Sharp ZL201510882938.5；
2. AlN/AZ91D magnesium-based composite material strands are put into Muffle furnace, solution treatment is carried out at 420 DEG C, is dissolved
Time is 17 hours.
After 3. solution treatment terminates, material is taken out out of Muffle furnace, is put into originally quenching-in water.
4. the composite ingot casting after quenching is cut into and rolls plate shape, surface polishes smooth, as shown in Figure 2.
5. the plate that rolls prepared is put into Muffle furnace at 320 DEG C after preheating 5-15min, it is put into duo mill and is rolled
System (roll is without heating).Mill speed is 0.15m/s, and initial and final passage volume under pressure is no more than 5%, and pony-roughing pass pushes
Amount 15%, every time 5-10min that annealed at 320 DEG C.When total rolling reduction is 35%, stop rolling.
6. the roller sheet rolled is put into Muffle furnace, taken out at 80-110 DEG C after timeliness 35-45 hours.
Embodiment 3：
1. using Ф 100 × 130 AlN/AZ91 magnesium-based composite materials ingot casting as original blank, its preparation method is with reference to special
Sharp ZL201510882938.5；
2. AlN/AZ91D magnesium-based composite material strands are put into Muffle furnace, solution treatment is carried out at 400 DEG C, is dissolved
Time is 24 hours.
After 3. solution treatment terminates, material is taken out out of Muffle furnace, is put into originally quenching-in water.
4. the composite ingot casting after quenching is cut into and rolls plate shape, surface polishes smooth, as shown in Figure 2.
5. the plate that rolls prepared is put into Muffle furnace at 320 DEG C after preheating 12min, it is put into duo mill and is rolled
(roll is without heating).Mill speed is 0.15m/s, and initial and final passage volume under pressure is no more than 5%, pony-roughing pass volume under pressure
15%, every time 5min that annealed at 350 DEG C.When total rolling reduction is 35%, stop rolling.
6. the roller sheet rolled is put into Muffle furnace, timeliness is taken out after 45 hours at 110 DEG C.
AlN/AZ91 composites contrast with matrix AZ91D As-cast Microstructures mechanical property after table 1 is rolled and is heat-treated
Claims (1)
1. rolling and the heat treatment method of a kind of high-performance AlN/AZ91D magnesium-based composite materials, it is characterised in that step is as follows：
Step 1：AlN/AZ91D magnesium-based composite material strands are put into Muffle furnace and carry out solution treatment, solid solubility temperature 400-
420 DEG C, the time is 16-24 hours；
Step 2：Material is taken out out of Muffle furnace, is put into originally quenching-in water；
Step 3：Composite ingot casting after quenching is cut into and rolls plate shape, surface polishes smooth；
Step 4：The plate that rolls prepared is put into Muffle furnace at 320-350 DEG C after preheating 5-15min, duo mill is put into and enters
Row rolling, mill speed 0.15-0.3m/s, initial and final passage volume under pressure are no more than 5%, pony-roughing pass volume under pressure
10%-15%, every time 5-10min that annealed at 320-350 DEG C；When total rolling reduction is 35-45%, stop rolling
System；The roll is without heating；
Step 5：The roller sheet rolled is put into Muffle furnace, taken out at 80-110 DEG C after timeliness 35-45 hours, completes rolling
And heat treatment.
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| CN201711060886.9A CN107805769B (en) | 2017-11-02 | 2017-11-02 | The rolling of high-performance AlN/AZ91D magnesium-based composite material and heat treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184551A (en) * | 2019-06-26 | 2019-08-30 | 西北工业大学 | Improve the heat treatment method of situ Al N/AZ91 magnesium-based composite material corrosion resisting property |
| CN115874125A (en) * | 2021-09-28 | 2023-03-31 | 宝钢金属有限公司 | Magnesium alloy surface modification method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103740992A (en) * | 2014-01-16 | 2014-04-23 | 张霞 | Multi-element heat-resistant magnesium alloy and preparation method thereof |
| CN104131143A (en) * | 2013-09-11 | 2014-11-05 | 沈阳航空航天大学 | Preparation method for ultrathin magnesium alloy strip |
| CN104451484A (en) * | 2014-11-28 | 2015-03-25 | 沈阳工业大学 | Thermo-mechanical treatment strengthening technology of magnesium alloy sheet |
| CN106191587A (en) * | 2016-08-16 | 2016-12-07 | 中国科学院长春应用化学研究所 | Magnesium-rare earth and the preparation method of magnesium-rare earth suspended ceiling pinch plate |
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2017
- 2017-11-02 CN CN201711060886.9A patent/CN107805769B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131143A (en) * | 2013-09-11 | 2014-11-05 | 沈阳航空航天大学 | Preparation method for ultrathin magnesium alloy strip |
| CN103740992A (en) * | 2014-01-16 | 2014-04-23 | 张霞 | Multi-element heat-resistant magnesium alloy and preparation method thereof |
| CN104451484A (en) * | 2014-11-28 | 2015-03-25 | 沈阳工业大学 | Thermo-mechanical treatment strengthening technology of magnesium alloy sheet |
| CN106191587A (en) * | 2016-08-16 | 2016-12-07 | 中国科学院长春应用化学研究所 | Magnesium-rare earth and the preparation method of magnesium-rare earth suspended ceiling pinch plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184551A (en) * | 2019-06-26 | 2019-08-30 | 西北工业大学 | Improve the heat treatment method of situ Al N/AZ91 magnesium-based composite material corrosion resisting property |
| CN115874125A (en) * | 2021-09-28 | 2023-03-31 | 宝钢金属有限公司 | Magnesium alloy surface modification method |
| CN115874125B (en) * | 2021-09-28 | 2023-12-19 | 宝钢金属有限公司 | Magnesium alloy surface modification method |
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