CN107815575A - A kind of magnesium alloy ingot casting - Google Patents
A kind of magnesium alloy ingot casting Download PDFInfo
- Publication number
- CN107815575A CN107815575A CN201711014105.2A CN201711014105A CN107815575A CN 107815575 A CN107815575 A CN 107815575A CN 201711014105 A CN201711014105 A CN 201711014105A CN 107815575 A CN107815575 A CN 107815575A
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- CN
- China
- Prior art keywords
- magnesium
- alloy
- ingot
- magnesium alloy
- ingot casting
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- 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
Abstract
The invention discloses a kind of magnesium alloy ingot casting, the magnesium alloy ingot casting includes the raw material of following mass percent：Al 8.5 9.5%, Zn 0.45 0.9%, Mn 0.17 0.4%, Al Ti B intermediate alloys 0.18 0.2%, Al Ti C intermediate alloys 0.19 0.21%, impurity element S i, Cu, Ni and Fe total amount are less than 0.1%, and surplus is magnesium.The preparation method of the magnesium alloy ingot casting includes smelting technology and Technology for Heating Processing, and its smelting technology includes weighing and baking material, melting, refining and standing, casting, and Technology for Heating Processing includes solution treatment and Ageing Treatment.After the magnesium alloy ingot casting of gained of the invention is by adding fining agent, its grain size to magnesium alloy, the mechanical property such as stretching all has greatly improved；After heat treatment, the intensity of alloy cast ingot is further improved.
Description
Technical field
The invention belongs to alloy field, and in particular to a kind of magnesium alloy ingot casting.
Background technology
Magnesium alloy is most light structural metallic materials, and its specific strength, specific stiffness are very high, is closed than modulus of elasticity and high-strength aluminium
It is golden, steel alloy roughly the same, while there is good damping capacity.Thus this can be given full play of using magnesium alloy materials
Material effectiveness is good, weight is small, cushioning ability is strong, is easy to the characteristics of shaping, has huge application in industrial circle
Potentiality.Up to now, magnesium alloy materials have a wide range of applications in the field such as aerospace science field and automobile making,
With the development of material technology, magnesium alloy materials tool must have more wide application prospect and use value.
AZ91 is the Mg-Al systems alloy more often applied, and its alloy has high intensity and good casting character.But by
AZ91 crystal grain is generally bigger before refinement, so as to reduce overall mechanical property.The present invention is by AZ91 alloys
Composition and technical study, its fining agent and technique are adjusted and tested on the original basis, it is a kind of thin so as to obtain
Agent and all preferable improved AZ91 alloys of performance.
The content of the invention
In view of object above, the invention discloses a kind of magnesium alloy ingot casting, by adding fining agent so that the conjunction of preparation
The crystal grain of gold is fined, and institutional framework is adjusted, and its overall mechanical property is improved and strengthened.
To achieve these goals, the technical solution adopted by the present invention is：A kind of magnesium alloy ingot casting, includes following quality
The raw material of percentage：Al 8.5-9.5%, Zn 0.45-0.9%, Mn 0.17-0.4%, Al-Ti-B intermediate alloys 0.18-
0.2%, Al-Ti-C intermediate alloy 0.19-0.21%, impurity element S i, Cu, Ni and Fe total amount are less than 0.1%, and surplus is
Magnesium.
The Al-Ti-B intermediate alloys are Al-4Ti-B intermediate alloys.
The Al-Ti-C intermediate alloys are Al-5Ti-0.8C intermediate alloys.
The preparation method of above-mentioned magnesium alloy ingot casting includes smelting technology and Technology for Heating Processing；Wherein, the smelting technology
In N2、CO2And SF6Carried out under the conditions of mixed gas protected, step is as follows：
(1) weighing and baking material：By material quality percentage, weigh respectively magnesium ingot, aluminium ingot, zinc ingot metal, magnesium manganese intermediate alloy,
Al-Ti-B intermediate alloys and Al-Ti-C intermediate alloys；And various raw materials are placed in 200-220 DEG C of preheating furnace and preheat 4-
6h；
(2) melting：Magnesium ingot after preheating is placed in melting furnace and is heated to 690-700 DEG C and is completely melt to magnesium ingot, then
740-760 DEG C is warming up to, adds preheated aluminium ingot and zinc ingot metal into the magnesium liquid of fusing, stirring is to being completely melt, then by melt
Add among preheated magnesium manganese intermediate alloy, Al-Ti-B intermediate alloys and Al-Ti-C and close when temperature recovery is to 740-760 DEG C
Gold, stirring obtain hybrid alloys melt to being completely melt；
(3) refine and stand：Hybrid alloys melt obtained by step (2) is cooled to 700-720 DEG C, surface is skimmed and floats
Slag, 10-15min is incubated after being then uniformly mixed, refines 3-5min at this temperature, skimmed surface after the completion of refining again and float
Slag, rise temperature stand 15-20min to 740 DEG C；
(4) cast：When standing terminates rear alloy melt to be mixed and is cooled to 680-690 DEG C, to the steel heated in advance
Poured into a mould in mould, obtain alloy cast ingot；
Described Technology for Heating Processing is：
The alloy cast ingot that melting obtains is carried out to 8h solution treatment at a temperature of 420 DEG C, then entered in 200 DEG C of temperature
Row 10h Ageing Treatment.
Mixed gas N in the smelting technology2、CO2And SF6Volume ratio be 50:50:0.3.
The preheating temperature of the steel die is 280-300 DEG C.
The purpose of addition fining agent is that the crystal grain of the alloy before being allowed to can be refined, by 75 μm of basic AZ91 alloys
Average grain size is refined to 39 μm of average grain sizes, and institutional framework adjustment is uniform, and close uniform alloy structure causes
Casting character and mechanical property of alloy etc. all increase；And the AZ91 alloy grains before refining are generally bigger, it casts
Though performance is preferable, overall mechanical property such as hardness, tensile strength etc. are not ideal.
Beneficial effects of the present invention：The present invention adds alloy refinement agent on the basis of basic AZ91 alloys, and using conjunction
The thermal process of reason is improved to the alloy for adding fining agent, is refined the crystal grain of basic AZ91 alloys, and institutional framework is adjusted
It is whole evenly so that the combination property of alloy is further strengthened.
Brief description of the drawings
Fig. 1 is the grain size of the overall magnesium alloy of 1 addition fining agent Al-4Ti-B intermediate alloy of embodiment
Figure；
Fig. 2 is that the crystallite dimension of the overall magnesium alloy of 2 addition fining agent Al-5Ti-0.8C intermediate alloys of embodiment is big
Small figure；
Fig. 3 is the entirety that embodiment 3 adds fining agent Al-4Ti-B intermediate alloys and Al-5Ti-0.8C intermediate alloys simultaneously
The grain size figure of magnesium alloy.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.In embodiment, various raw materials are all Marko's ripple
Net product.
Embodiment 1-3 various composition is as follows：
The preparation method of above-mentioned magnesium alloy ingot casting includes smelting technology and Technology for Heating Processing, and specific steps are with reference to as follows：
The smelting technology is in N2、CO2And SF6Carried out under the conditions of mixed gas protected, step is as follows：
(1) weighing and baking material：By material quality percentage, weigh respectively magnesium ingot, aluminium ingot, zinc ingot metal, magnesium manganese intermediate alloy,
Al-4Ti-B intermediate alloys and Al-5Ti-0.8C intermediate alloys；And various raw materials are placed in 200 DEG C of preheating furnace and preheated
4h；
(2) melting：Magnesium ingot after preheating is placed in melting furnace and is heated to 690 DEG C and is completely melt to magnesium ingot, is then heated up
To 740 DEG C, preheated aluminium ingot and zinc ingot metal are added into the magnesium liquid of fusing, stirring is gone up to being completely melt, then by melt temperature
Preheated magnesium manganese intermediate alloy, Al-4Ti-B intermediate alloys and Al-5Ti-0.8C intermediate alloys are added during to 740 DEG C, is stirred
To being completely melt, hybrid alloys melt is obtained；
(3) refine and stand：Hybrid alloys melt obtained by step (2) is cooled to 710 DEG C, skims surface scum, so
After be uniformly mixed after be incubated 15min, refine 5min at this temperature, skim surface scum after the completion of refining again, temperature of ging up
Degree stands 15min to 740 DEG C；
(4) cast：When standing terminates rear alloy melt to be mixed and is cooled to 680 DEG C, to the steel for being previously heated to 300 DEG C
Poured into a mould in mould, obtain alloy cast ingot；
Described Technology for Heating Processing is：
The alloy cast ingot that melting obtains is carried out to 8h solution treatment at a temperature of 420 DEG C, then entered in 200 DEG C of temperature
Row 10h Ageing Treatment.
Fining agent Al-4Ti-B intermediate alloys are only added in the preparation process of embodiment 1, are only added in the preparation process of embodiment 2
Fining agent Al-5Ti-0.8C intermediate alloys, add simultaneously in the preparation process of embodiment 3 fining agent Al-4Ti-B intermediate alloys and
Al-5Ti-0.8C intermediate alloys.
Above-described embodiment 1-3 magnesium alloy ingot castings prepared are detected, obtained technical parameter is as follows：
As seen from table, magnesium alloy of the invention is on the basis of original AZ91 alloys, the alloy refinement agent of addition and to heat
The improvement of handling process so that the combination property of alloy is further strengthened.
Claims (6)
1. a kind of magnesium alloy ingot casting, it is characterised in that include the raw material of following mass percent：Al 8.5-9.5%, Zn
0.45-0.9%, Mn 0.17-0.4%, Al-Ti-B intermediate alloy 0.18-0.2%, Al-Ti-C intermediate alloy 0.19-
0.21%, impurity element S i, Cu, Ni and Fe total amount are less than 0.1%, and surplus is magnesium.
A kind of 2. magnesium alloy ingot casting according to claim 1, it is characterised in that：The Al-Ti-B intermediate alloys are Al-
4Ti-B intermediate alloys.
A kind of 3. magnesium alloy ingot casting according to claim 1, it is characterised in that：The Al-Ti-C intermediate alloys are Al-
5Ti-0.8C intermediate alloys.
A kind of 4. magnesium alloy ingot casting according to claim 1, it is characterised in that the preparation method of the magnesium alloy ingot casting
Including smelting technology and Technology for Heating Processing；Wherein, the smelting technology is in N2、CO2And SF6Carried out under the conditions of mixed gas protected,
Step is as follows：
(1) weighing and baking material：By material quality percentage, magnesium ingot, aluminium ingot, zinc ingot metal, magnesium manganese intermediate alloy, Al-Ti- are weighed respectively
B intermediate alloys and Al-Ti-C intermediate alloys；And various raw materials are placed in 200-220 DEG C of preheating furnace and preheat 4-6h；
(2) melting：Magnesium ingot after preheating is placed in melting furnace and is heated to 690-700 DEG C and is completely melt to magnesium ingot, is then heated up
To 740-760 DEG C, preheated aluminium ingot and zinc ingot metal are added into the magnesium liquid of fusing, stirring is to being completely melt, then by melt temperature
Preheated magnesium manganese intermediate alloy, Al-Ti-B intermediate alloys and Al-Ti-C intermediate alloys are added when ging up to 740-760 DEG C, is stirred
Mix to being completely melt, obtain hybrid alloys melt；
(3) refine and stand：Hybrid alloys melt obtained by step (2) is cooled to 700-720 DEG C, skims surface scum, so
After be uniformly mixed after be incubated 10-15min, refine 3-5min at this temperature, skim surface scum after the completion of refining again, return
Temperature is risen to 740 DEG C, stands 15-20min；
(4) cast：When standing terminates rear alloy melt to be mixed and is cooled to 680-690 DEG C, to the steel die heated in advance
In poured into a mould, obtain alloy cast ingot；
Described Technology for Heating Processing is：
The alloy cast ingot that melting obtains is carried out to 8h solution treatment at a temperature of 420 DEG C, then carried out in 200 DEG C of temperature
10h Ageing Treatment.
A kind of 5. magnesium alloy ingot casting according to claim 4, it is characterised in that：Mixed gas N in the smelting technology2、
CO2And SF6Volume ratio be 50:50:0.3.
A kind of 6. magnesium alloy ingot casting according to claim 4, it is characterised in that：The preheating temperature of the steel die is
280-300℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711014105.2A CN107815575A (en) | 2017-10-26 | 2017-10-26 | A kind of magnesium alloy ingot casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711014105.2A CN107815575A (en) | 2017-10-26 | 2017-10-26 | A kind of magnesium alloy ingot casting |
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| CN107815575A true CN107815575A (en) | 2018-03-20 |
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| CN201711014105.2A Pending CN107815575A (en) | 2017-10-26 | 2017-10-26 | A kind of magnesium alloy ingot casting |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411175A (en) * | 2018-04-19 | 2018-08-17 | 合肥博创机械制造有限公司 | A kind of corrosion resistance magnesium alloy and preparation method thereof |
| CN109014086A (en) * | 2018-08-17 | 2018-12-18 | 清华大学 | A kind of casting method of high-magnesium aluminum alloy |
| CN109182862A (en) * | 2018-11-21 | 2019-01-11 | 蚌埠创特新材料科技有限公司 | A kind of anticorrosive magnesium-aluminium alloy |
| CN111020326A (en) * | 2019-12-05 | 2020-04-17 | 西安理工大学 | High-temperature creep resistant magnesium-aluminum alloy and preparation method thereof |
| CN111235447A (en) * | 2020-04-13 | 2020-06-05 | 五台云海镁业有限公司 | High-iron magnesium alloy for ruminants and preparation method thereof |
| CN114369738A (en) * | 2022-01-18 | 2022-04-19 | 重庆理工大学 | Magnesium alloy with low cost and high casting performance and preparation method thereof |
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| CN1257935A (en) * | 1999-12-09 | 2000-06-28 | 朝阳特种材料推广中心 | Metallic strengthening agent |
| CN101942590A (en) * | 2010-10-14 | 2011-01-12 | 鹤壁金山镁业有限公司 | Magnesium alloy for automobile parts and preparation method thereof |
| CN102489692A (en) * | 2011-12-05 | 2012-06-13 | 大连理工大学 | Method for preparing Al-Ti-C-Gd grain refiner of magnesium alloys by utilizing ultrasonic waves |
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2017
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Patent Citations (3)
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| CN1257935A (en) * | 1999-12-09 | 2000-06-28 | 朝阳特种材料推广中心 | Metallic strengthening agent |
| CN101942590A (en) * | 2010-10-14 | 2011-01-12 | 鹤壁金山镁业有限公司 | Magnesium alloy for automobile parts and preparation method thereof |
| CN102489692A (en) * | 2011-12-05 | 2012-06-13 | 大连理工大学 | Method for preparing Al-Ti-C-Gd grain refiner of magnesium alloys by utilizing ultrasonic waves |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411175A (en) * | 2018-04-19 | 2018-08-17 | 合肥博创机械制造有限公司 | A kind of corrosion resistance magnesium alloy and preparation method thereof |
| CN109014086A (en) * | 2018-08-17 | 2018-12-18 | 清华大学 | A kind of casting method of high-magnesium aluminum alloy |
| CN109182862A (en) * | 2018-11-21 | 2019-01-11 | 蚌埠创特新材料科技有限公司 | A kind of anticorrosive magnesium-aluminium alloy |
| CN109182862B (en) * | 2018-11-21 | 2020-04-03 | 阜阳创启工艺品有限公司 | Corrosion-resistant magnesium-aluminum alloy |
| CN111020326A (en) * | 2019-12-05 | 2020-04-17 | 西安理工大学 | High-temperature creep resistant magnesium-aluminum alloy and preparation method thereof |
| CN111235447A (en) * | 2020-04-13 | 2020-06-05 | 五台云海镁业有限公司 | High-iron magnesium alloy for ruminants and preparation method thereof |
| CN114369738A (en) * | 2022-01-18 | 2022-04-19 | 重庆理工大学 | Magnesium alloy with low cost and high casting performance and preparation method thereof |
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Application publication date: 20180320 |