CN105886977B - A kind of magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method - Google Patents
A kind of magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method Download PDFInfo
- Publication number
- CN105886977B CN105886977B CN201610429085.4A CN201610429085A CN105886977B CN 105886977 B CN105886977 B CN 105886977B CN 201610429085 A CN201610429085 A CN 201610429085A CN 105886977 B CN105886977 B CN 105886977B
- Authority
- CN
- China
- Prior art keywords
- magnesium alloy
- treatment method
- incubated
- hours
- cooling treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
The present invention discloses a kind of magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method, comprises the following steps：Magnesium alloy is warming up to 410 440 DEG C with 10 20 DEG C/min speed, 20 30 hours are incubated at 410 440 DEG C, is then cooled to 120 170 DEG C with 40 50 DEG C/min speed, and 4 10 hours are incubated at 120 170 DEG C.The magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method of the present invention, the composition segregation phenomena in casting alloy can farthest be eliminated, alloying element is set to be uniformly distributed in ingot casting, it is ensured that its each several part mechanical property uniformity, to ensure the performance of part.
Description
Technical field
The invention belongs to magnesium alloy materials preparing technical field, specially a kind of magnesium alloy ingot alternating temperature homogenizing annealing etc.
Warm cooling treatment method.
Background technology
Magnesium alloy has light specific gravity, damping capacity good, specific strength and specific stiffness are high, casting and cutting ability are excellent etc. one
The advantages of serial physical, mechanical property, it is widely used in the fields such as space flight, electronics, automobile, national defence.Magnesium alloy plasticity is poor, deformation
Difficulty, cast magnesium alloy accounts for 90% that magnesium alloy uses total amount, and in cast magnesium alloy, Mg-Al systems alloy is without expensive rare earth element
With Zr elements, therefore Mg-Al systems casting alloy has bigger application space.But branch can be produced in Mg-Al systems alloy casting process
Crystalline substance segregation, thick second, which meets, hinders the plastic deformation of matrix, causes stress concentration, causes Materials Fracture, it is therefore necessary to be right
Casting Mg-Al systems alloy carries out homogenization heat treatment.
Research shows（The such as Guo Qiang, Yan Hongge, Chen Zhenhua homogenizing annealing process is to as-cast AZ80 Magnesium alloy tissue and property
Influence [J] metal heat treatmets of energy, 2006,7 (31):77-80）, by carrying out Homogenization Treatments to as cast condition Mg-Al systems alloy
The dendritic segregation of ingot casting can be effectively eliminated, acquisition structural constituent is uniform, the excellent as-cast magnesium alloy of comprehensive mechanical property.Mesh
Before, certain research has been made to the Homogenization Treatments of casting Mg-Al systems alloy both at home and abroad, has established series of theories and technique
Specification.Mg-Al systems alloy has larger crystallizing range in process of setting, easily causes uneven components, is cast for large scale
Part, because temperature everywhere is inconsistent, this component segregation is more aggravated.Conventional homogenization process is：It is directly placed into heating
In stove, design temperature, air cooling or water cooling are warming up to room temperature.This conventional uniform chemical industry skill can only be handled below Φ 220mm
Magnesium alloy ingot.
With magnesium alloy application it is more and more extensive, the demand of large scale magnesium alloy ingot is also gradually increased, it is equal to its
Homogenize technique and it is also proposed higher requirement.Large scale magnesium alloy ingot mainly has in the difficult point of homogenization process：（1）Large scale
Ingot casting can produce larger casting stress in solidification and later cooling procedure and be difficult to quick release, easily cause central area
Crystal grain is grown up in Homogenization Process；（2）Large scale ingot casting cooldown rate problem：Cooling velocity is too fast, easily produces stress, leads
Cause cracking；Cooling velocity is too slow, causes precipitation strength, is unfavorable for deformation after unloading and heat treatment；（3）Mode of heating and firing rate
It is difficult to select, once selection is improper, can makes alloy uneven heating, dendrite can not effectively melts, so as to cause to integrate mechanics
Performance is bad.
At present, report is had no in pertinent literature to the homogenization process of Φ >=220mm magnesium alloy ingot.
The content of the invention
In view of the above-mentioned problems, the present invention provides a kind of magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method,
The composition segregation phenomena in casting alloy can be farthest eliminated, alloying element is uniformly distributed in ingot casting, it is ensured that its is each
Some Mechanical Properties uniformity, ensure the performance of part.
To achieve the above object, technical scheme is as follows：
A kind of magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method, comprises the following steps：By magnesium alloy with
10-20 DEG C/min speed is warming up to 410-440 DEG C, 20-30 hours is incubated at 410-440 DEG C, then with 40-50 DEG C/min
Speed be cooled to 120-170 DEG C, and be incubated 4-10 hours at 120-170 DEG C.
Preferably, described magnesium alloy is Mg-Sn-Zn alloys.
Preferably, described Mg-Sn-Zn alloys include following composition：Mg87~97%、Sn2~8%、Zn1~5%.
Preferably, magnesium alloy is warming up to 410 DEG C with 15 DEG C/min speed, 20 hours is incubated at 410 DEG C, then with
45 DEG C/min speed is cooled to 150 DEG C, and is incubated 6 hours at 15 DEG C.
Beneficial effects of the present invention are：
Under the treatment temperature of the magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method of the present invention, Neng Gouda
To uniformization effect as described in Example 6, the microhardness of alloy is improved, it is ensured that its each several part mechanical property uniformity,
Ensure the performance of part；And cause latticed complete with graininess precipitated phase in as cast condition Mg-Sn-Zn As-cast Microstructures
Portion disappears, and farthest eliminates the composition segregation phenomena in casting alloy, alloying element is evenly distributed in ingot casting.
Brief description of the drawings
Fig. 1 is Mg-Sn-Zn As-cast Microstructure figures
Fig. 2 is Mg-Sn-Zn alloys through 410 DEG C of Homogenization Treatments 20h design sketch
Fig. 3 is that Mg-Sn-Zn alloys are incubated 6 hours design sketch after 410 DEG C of Homogenization Treatments 20h at 150 DEG C.
Embodiment
Below by specific embodiment, the present invention is described in detail.
Embodiment 1
The magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method of the present invention, comprises the following steps：Magnesium is closed
Gold is warming up to 410 DEG C with 10 DEG C/min speed, is incubated 20 hours at 410 DEG C, is then cooled to 40 DEG C/min speed
120 DEG C, and it is incubated 4 hours at 120 DEG C.
Described magnesium alloy is Mg-Sn-Zn alloys.
Described Mg-Sn-Zn alloys include following composition：Mg87%、Sn8%、Zn5%.
Embodiment 2
The magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method of the present invention, comprises the following steps：Magnesium is closed
Gold is warming up to 420 DEG C with 12 DEG C/min speed, is incubated 22 hours at 420 DEG C, is then cooled to 45 DEG C/min speed
140 DEG C, and it is incubated 5 hours at 140 DEG C.
Described magnesium alloy is Mg-Sn-Zn alloys.
Described Mg-Sn-Zn alloys include following composition：Mg90%、Sn6%、Zn4%.
Embodiment 3
The magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method of the present invention, comprises the following steps：Magnesium is closed
Gold is warming up to 430 DEG C with 14 DEG C/min speed, is incubated 23 hours at 430 DEG C, is then cooled to 48 DEG C/min speed
160 DEG C, and it is incubated 7 hours at 160 DEG C.
Described magnesium alloy is Mg-Sn-Zn alloys.
Described Mg-Sn-Zn alloys include following composition：Mg92%、Sn5%、Zn3%.
Embodiment 4
The magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method of the present invention, comprises the following steps：By alloy
440 DEG C are warming up to 15 DEG C/min speed, 24 hours are incubated at 440 DEG C, then with 50 DEG C/min speed continuous coo1ing
To 170 DEG C, and 8 hours are incubated at 170 DEG C.
Described magnesium alloy is Mg-Sn-Zn alloys.
Described Mg-Sn-Zn alloys include following composition：Mg93%、Sn5%、Zn2%.
Embodiment 5
The magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method of the present invention, comprises the following steps：Magnesium is closed
Gold is warming up to 410 DEG C with 15 DEG C/min speed, is incubated 20 hours at 410 DEG C, is then cooled to 45 DEG C/min speed
150 DEG C, and it is incubated 6 hours at 15 DEG C.
Described magnesium alloy is Mg-Sn-Zn alloys.
Described Mg-Sn-Zn alloys include following composition：Mg97%、Sn2%、Zn1%.
Embodiment 6
Contrast test
Control group is unprocessed as cast condition Mg-Sn-Zn alloys, test group be using the homogenization of the embodiment of the present invention 1 ~ 5 at
As cast condition Mg-Sn-Zn alloys after reason, detect its microhardness, comparing result is as shown in table 1 respectively：
The microhardness of as cast condition Mg-Sn-Zn alloys after table 1 is respectively handled
As shown in Table 1, by the processing method of the present invention, the microhardnesses of as cast condition Mg-Sn-Zn alloys apparently higher than without
Handle as cast condition Mg-Sn-Zn alloys.
Embodiment 7
It can be seen that from accompanying drawing 1 of the present invention：Before the inventive method processing, the as-cast structure figure of Mg-Sn-Zn alloys
Middle a large amount of latticed precipitated phases to be present, this shows more precipitation situation in alloy be present, and the uniformity of alloy is not ideal enough；
It can be seen that from accompanying drawing Fig. 2 of the present invention：15 DEG C/min of the Mg-Sn-Zn alloys through present invention speed is warming up to
410 DEG C, after being incubated 20 hours PROCESS FOR TREATMENTs at 410 DEG C, i.e. after 410 DEG C of Homogenization Treatments 20h, latticed precipitated phase has disappeared
Lose, only less amount of graininess precipitate, have been achieved for larger improvement.
It can be seen that from accompanying drawing Fig. 2 of the present invention：Mg-Sn-Zn alloys are through 410 DEG C of Homogenization Treatments 20h of the present invention, so
It is latticed all to have been disappeared with graininess precipitated phase afterwards after 150 DEG C are incubated 6 hours, embody more preferable uniformization effect.
Claims (2)
1. a kind of magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method, it is characterised in that comprise the following steps：Will
Magnesium alloy is warming up to 410-440 DEG C with 10-20 DEG C/min speed, 20-30 hours is incubated at 410-440 DEG C, then with 40-
50 DEG C/min speed is cooled to 120-170 DEG C, and is incubated 4-10 hours at 120-170 DEG C；
Described magnesium alloy is Mg-Sn-Zn alloys；
Described Mg-Sn-Zn alloys include following composition：Mg87~97%、Sn2~8%、Zn1~5%.
2. magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method according to claim 1, it is characterised in that：
Magnesium alloy is warming up to 410 DEG C with 15 DEG C/min speed, 20 hours are incubated at 410 DEG C, then with 45 DEG C/min speed
150 DEG C are cooled to, and 6 hours are incubated at 15 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610429085.4A CN105886977B (en) | 2016-06-17 | 2016-06-17 | A kind of magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610429085.4A CN105886977B (en) | 2016-06-17 | 2016-06-17 | A kind of magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105886977A CN105886977A (en) | 2016-08-24 |
| CN105886977B true CN105886977B (en) | 2018-04-06 |
Family
ID=56730278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610429085.4A Expired - Fee Related CN105886977B (en) | 2016-06-17 | 2016-06-17 | A kind of magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105886977B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236887A (en) * | 2017-05-15 | 2017-10-10 | 重庆大学 | A kind of Wrought magnesium alloys in high intensity, high plasticity material and preparation method |
| CN108220731B (en) * | 2018-02-28 | 2020-01-17 | 河南科技大学 | Multi-element heat-resistant magnesium alloy and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436828B (en) * | 2013-09-04 | 2015-06-03 | 中南大学 | Homogenization heat treatment process of large-size magnesium alloy ingot |
-
2016
- 2016-06-17 CN CN201610429085.4A patent/CN105886977B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105886977A (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107312986B (en) | A kind of preparation method of high-strength plasticity duplex grain structure aluminium-magnesium alloy | |
| CN102796976B (en) | Staged homogenization heat treatment method for improving microstructure and performances of Zr-containing 7xxx aluminum alloy | |
| CN106591632A (en) | Thermal treatment process for improving comprehensive performance of aluminum-lithium alloy | |
| CN106521270A (en) | Thermal treatment process for improving corrosion resistance of aluminum-lithium alloy | |
| CN105714223B (en) | A kind of homogenization heat treatment method of Al Zn Mg Cu Zr aluminium alloys | |
| CN103436828B (en) | Homogenization heat treatment process of large-size magnesium alloy ingot | |
| CN104328501B (en) | Fully controllable TiAl single crystal alloys of a kind of lamellar orientation and preparation method thereof | |
| CN106834986A (en) | A kind of aviation alloyed aluminium homogenizing heat treatment | |
| Wang et al. | Microstructural evolution of 6061 alloy during isothermal heat treatment | |
| CN104651764A (en) | Solid solution thermal treatment method for high-zinc scandium-containing aluminum alloy | |
| CN109112349B (en) | CuAlMn shape memory alloy and preparation method thereof | |
| CN109554595B (en) | Method for controlling dispersed phase precipitation of Al-Cu-Mg-Si-Mn alloy | |
| CN104805385B (en) | Homogenization thermal-treatment method for ultra-large semi-continuous cast round ingot | |
| CN102400074A (en) | Thermal treatment process capable of reducing microsegregation of directionally-solidified high-niobium TiAl alloy | |
| CN103817313B (en) | A kind of preparation method of integral fine crystal radial impeller foundry goods | |
| CN104451291A (en) | Homogenizing heat treatment process of Er and Zr composite microalloyed Al-Zn-Mg-Cu alloy | |
| CN104278173A (en) | High-strength high-ductility TiAl alloy material and preparation method thereof | |
| CN109536803B (en) | High-ductility low-rare earth magnesium alloy plate and preparation method thereof | |
| CN105369084A (en) | Homogenizing annealing and extruding deforming process for high-magnesium aluminum alloy with trace amount of Er added | |
| CN107523772B (en) | A kind of homogenization process of U720Li high temperature alloy | |
| CN105886977B (en) | A kind of magnesium alloy ingot alternating temperature homogenizing annealing isothermal cooling treatment method | |
| CN110983084A (en) | Manufacturing method of low-quenching-sensitivity ultra-thick plate | |
| CN102418147A (en) | High strength and completely antioxidative third generation monocrystalline high temperature alloy and preparation method thereof | |
| CN103866170A (en) | Preparation method of rare earth magnesium alloy and sheet thereof | |
| CN110280729A (en) | A kind of method that multi-source ultrasonic wave auxiliary D.C.casting prepares big specification 7XXX line aluminium alloy slab ingot |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 Termination date: 20210617 |