CN106222507A - A kind of low cost high-damping high intensity Mg Zn Ce alloy and preparation method thereof - Google Patents
A kind of low cost high-damping high intensity Mg Zn Ce alloy and preparation method thereof Download PDFInfo
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- CN106222507A CN106222507A CN201610804470.2A CN201610804470A CN106222507A CN 106222507 A CN106222507 A CN 106222507A CN 201610804470 A CN201610804470 A CN 201610804470A CN 106222507 A CN106222507 A CN 106222507A
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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
- C22C23/04—Alloys based on magnesium with zinc or cadmium as the next major constituent
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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
Abstract
The present invention relates to a kind of low cost high-damping high intensity Mg Zn Ce alloy and preparation method thereof, the weight/mass percentage composition of each component is: Ce=0.4～0.6, Zn≤1.5, Fe≤0.08, Mn≤0.02, and surplus is magnesium and inevitable impurity.Preparation method includes: Mg Zn Ce alloy cast ingot vacuum melting prepared was 400～450 DEG C of homogenization heat treatments 6～15 hours；Being extruded at 300～360 DEG C by alloy after Homogenization Treatments, before extruding, alloy cast ingot and extrusion die need to be incubated 1～3h at 300～360 DEG C；By the alloy after extruding 320～380 DEG C of heat treatments 2～10 hours.The present invention is remarkably improved Mg Zn Ce alloy damping characteristic by crimp and heat treatment coupling technique, obtains low cost high-damping high-strength magnesium alloy, and density is less than 1.8g/cm3.Present invention process is simple, portable strong, and easily operates, and material can meet the actual requirement to mechanics and damping capacity simultaneously, can be widely applied to the fields such as Aero-Space, automobile and track traffic, to reach the effect of lightweight and vibration and noise reducing.
Description
Technical field
The invention belongs to magnesium alloy materials technology, be specifically related to a kind of low cost high-damping high intensity Mg-Zn-Ce alloy
Preparation technology, described high-damping refers to that damping value >=0.01 that material can reach, described high intensity refer to that material can reach
Yield strength >=200MPa.
Background technology
Along with the fast development of modern society, the modern industry such as Aero-Space, defence and military, automobile and track traffic by
Gradually develop to lightweight, high speed and high-power direction, the vibration thus brought and noise aggravation, for low-density, high ratio
The demand of intensity and high-damping metal structural material is more and more urgent.Magnesium and alloy thereof are as the best metal of current damping capacity
One of structural material, have that density is little simultaneously, specific strength and specific stiffness is high, heat conduction and conduct electricity very well, electromagnetic shielding capability is good,
The series of advantages such as aboundresources and environmental protection recoverable, are more and more paid close attention to by people.Magnesium and magnesium alloy room
The damper mechanism of temperature damping is dislocation mechanism, and mobile dislocation density is the highest, and the damping capacity of alloy is the best, and it is main to improve intensity
It is the motion of suppression dislocation, therefore generally believes that magnesium and the mechanical property of magnesium alloy and damping capacity are conflicting.To this end,
Solving the contradiction between magnesium alloy damping and mechanical property, developing low-cost high-damping high-strength magnesium alloy material becomes one urgently
Problem to be solved.
The damping of magnesium alloy is mainly relevant with the dislocation in alloy and the distribution of point defect and form.Wherein in alloy
The change of solid solution atom, the second phase, crystallite dimension and orientation etc. all can cause alloy Dislocations and the density of point defect, distribution shape
Formula and the change of motor capacity, thus affect the damping capacity of alloy.Alloying is to improve the important hands of magnesium alloy combination property
Section, the alloying element of interpolation by changing alloy dislocation or the density of point defect and distribution, has report as solid solution atom or second
Road claims the damping capacity of the binary as-cast magnesium alloy of the elements such as Zr, Si, Mn, the Al containing trace to be even better than pure magnesium, but they
Mechanical property is the lowest, it is impossible to meet practical application request.Extrude, roll, the plastic deformation process such as forging can effectively change
The mechanical property of kind magnesium alloy, but the dislocation tangle caused due to deformation can make alloy damping characteristic be greatly reduced.CN1888108
(patent No. 200610010326.8) discloses one " Cariaceous high-damping deformation magnesium alloy and preparation method thereof ", by magnesium
The little alloying element with crystal grain thinning of middle interpolation solid solubility, and ingot casting is carried out conventional hot extrusion and intense plastic strain
(ECAP, MDF) obtains ultrafine-grained (UFG) microstructure, is respectively to improving damping and mechanical property, tensile strength and yield strength simultaneously
212MPa and 135MPa, damping capacity Q-1It is only 0.023, not only performance fall flat, and complicated process of preparation.
The CN101332560A(patent No. 200810070092.5) and the CN101348890A(patent No. 200810070113.3) provide
A kind of plastic working technique improving damping performance of high-strength wrought magnesium alloys and Technology for Heating Processing, can improve extruding plasticity and become
Magnesium alloy damping performance after shape, but they only just possess reasonable damping and amortization in the case of strain amplitude is higher
Can, this will limit performance and the application of magnesium alloy damping performance.
In consideration of it, the present invention considers from the less magnesium alloy of alloying element content, by crimp and heat treatment
Coupling technique realizes the balance optimizing of magnesium alloy damping and mechanical property, and a kind of low cost high-damping high-strength magnesium of preparation closes
Gold.
Summary of the invention
For deficiencies of the prior art, the present invention solves high-damping magnesium alloy owing to mechanical property is low and becomes
This height and apply limited problem, realize low alloyed element Mg-Zn-Ce alloy by crimp and heat treatment coupling technique
Damping and the balance optimizing of mechanical property, it is provided that a kind of low cost high-damping high intensity Mg-Zn-Ce alloy, also provide for it and prepare
Method.
Solving above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of low cost high-damping high intensity Mg-Zn-Ce alloy, it is characterised in that the weight/mass percentage composition of each component is: Ce=
0.4～0.6, Zn≤1.5, Fe≤0.08, Mn≤0.02, surplus is magnesium and inevitable impurity.
Further, the present invention also provides for the preparation method of a kind of low cost high-damping high intensity Mg-Zn-Ce alloy, passes through
Crimp and heat treatment coupling technique realize magnesium alloy damping and the balance optimizing of mechanical property, specifically include following step
Rapid:
(1) by claim 1 formula, melting is carried out by vacuum induction melting furnace, at 700～760 DEG C of insulations electromagnetic induction
Stirring makes raw material fully melt, and is cooled to 610～630 DEG C and stands insulation 5～15 minutes, then salt bath after alloy all melts
Water-cooled, the Mg-Zn-Ce alloy cast ingot obtained；Zn adds with pure zinc form, Ce adds with Mg-14wt%Ce intermediate alloy form；
(2) Mg-Zn-Ce alloy cast ingot step (1) obtained was 400～450 DEG C of homogenization heat treatments 6～15 hours；
(3) the Mg-Zn-Ce alloy after step (2) Homogenization Treatments and extrusion die are incubated 1～3h at 300～360 DEG C；So
After extrude on extruder, the technological parameter wherein used is: extrusion temperature 300～360 DEG C, and extrusion ratio is 25, extruding
Speed 5mm/s, and extrusion speed is constant；
(4) the Mg-Zn-Ce alloy after step (3) being extruded 320～380 DEG C of heat treatments 2～10 hours, last air cooling.
Compared to existing technology, the method have the advantages that
1, the present invention uses Mg-0.53%Zn-0.54%Ce alloy, and alloying element content is less, low cost, closes for Mg-Zn-Ce
Zn and Ce in gold is effective intensified element, factor disadvantageous to damping capacity, the magnesium alloy resistance after being processed by this method
Buddhist nun and mechanical property all have clear improvement, it is achieved that damping and the balance optimizing of mechanics, wherein through crimp and heat treatment
After coupling technique processes, its damping capacity is up to 0.11, the most general high damping material level, and yield strength is the biggest
In 200MPa.
2, present invention process is simple, and device therefor is conventional common apparatus, portable strong, and easily operates, alloy unit
Cellulose content is extremely low, with low cost, has obtained a kind of low cost high-damping high-strength magnesium alloy material, has solved magnesium alloy damping
Can high but mechanical property is low and cost is high and apply limited problem, can be widely applied to Aero-Space, automobile and track and hand over
The field such as logical, to reach the effect of lightweight and vibration and noise reducing.
Accompanying drawing explanation
Fig. 1 is comparative example 1 and the damping curve of embodiment 1；
Fig. 2 is comparative example 2 and the damping curve of embodiment 2.
Detailed description of the invention:
Below by specific embodiment, the present invention is elaborated.The present embodiment carries out reality under premised on the technology of the present invention
Execute, now provide detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following example.
Comparative example 1: the preparation method of a kind of Mg-Zn-Ce alloy, comprises the steps:
(1) in vacuum induction melting furnace, melting ingot casting, and be passed through argon and protect, according to percentage by weight Zn=0.53%,
Ce=0.54% adds alloying element.Wherein, Zn adds with pure zinc form, Ce adds with Mg-14wt%Ce intermediate alloy form.?
750 DEG C of insulations electromagnetic induction stirring make raw material fully melt, and be cooled to 620 DEG C and stand insulation 10 points after alloy all melts
Clock, then salt bath water-cooled.
The Mg-Zn-Ce alloy using above method to prepare carries out performance test, and wherein damping capacity refers to that alloy is being answered
Becoming amplitude is 0.001, and frequency of vibration is the room temperature damping capacity under the conditions of 1Hz；Result display as cast condition Mg-0.53%Zn-0.54%
The strain of Ce alloy is 10-3Time damping be 0.022, belong to high-damping level.
Embodiment 1: the preparation method of a kind of low cost high-damping high intensity Mg-Zn-Ce alloy, comprises the steps:
(1) carry out melting by vacuum induction melting furnace, make raw material fully melt in 750 DEG C of insulations electromagnetic induction stirring, treat
Alloy is cooled to 620 DEG C and stands insulation 10 minutes, then salt bath water-cooled, the Mg-Zn-Ce alloy cast ingot obtained after all melting.
Wherein Zn=0.53wt%, Ce=0.54wt%, Zn add with pure zinc form, Ce adds with Mg-14wt%Ce intermediate alloy form；
(2) by Mg-Zn-Ce alloy cast ingot 420 DEG C of homogenization heat treatments 10 hours；
(3) being extruded on extruder by the Mg-Zn-Ce alloy after Homogenization Treatments, the technological parameter wherein used is: squeeze
Pressure temperature 330 DEG C, extrusion ratio is 25, extrusion speed 5mm/s, and extrusion speed is constant；
(4) by the Mg-Zn-Ce alloy after extruding at 350 DEG C of heat treatments 4 hours, last air cooling.
The Mg-Zn-Ce alloy using process above to process carries out performance test, and wherein damping capacity refers to that alloy is being answered
Becoming amplitude is 0.001, and frequency of vibration is the room temperature damping capacity under the conditions of 1Hz；Mechanical property refers to alloy at room temperature anti-
Tensile strength, yield strength and elongation percentage.
Result shows, As-extruded Mg-0.53%Zn-0.54%Ce alloy tensile strength after Overheating Treatment be 266MPa,
Yield strength is 201MPa, elongation percentage is 18.0%, and strain is 10-3Time damping be 0.11(exceed well over high-damping index >=
0.01), the damping capacity of this magnesium alloy is compared comparative example 1 and is improve 400%, and higher than common high-damping magnesium alloy, has excellent
Good combination property.And the percentage by weight of the rare earth element of this magnesium alloy is less than 1%, alloying low cost.
Comparative example 2: the preparation method of a kind of Mg-Zn-Ce alloy, comprises the steps:
(1) in vacuum induction melting furnace, melting ingot casting, and be passed through argon and protect, according to percentage by weight Zn=1.03%,
Ce=0.56% adds alloying element.Wherein, Zn adds with pure zinc form, Ce adds with Mg-14wt%Ce intermediate alloy form.?
750 DEG C of insulations electromagnetic induction stirring make raw material fully melt, and be cooled to 620 DEG C and stand insulation 10 points after alloy all melts
Clock, then salt bath water-cooled.
The Mg-Zn-Ce alloy using above method to prepare carries out performance test, and wherein damping capacity refers to that alloy is being answered
Becoming amplitude is 0.001, and frequency of vibration is the room temperature damping capacity under the conditions of 1Hz.
The strain of result display as cast condition Mg-0.53%Zn-0.54%Ce alloy is 10-3Time damping be 0.029, belong to high resistant
Buddhist nun's level.
Embodiment 2: the preparation method of a kind of low cost high-damping high intensity Mg-Zn-Ce alloy, comprises the steps:
(1) carry out melting by vacuum induction melting furnace, make raw material fully melt in 750 DEG C of insulations electromagnetic induction stirring, treat
Alloy is cooled to 620 DEG C and stands insulation 10 minutes, then salt bath water-cooled, the Mg-Zn-Ce alloy cast ingot obtained after all melting.
Wherein Zn=1.03wt%, Ce=0.56wt%, Zn add with pure zinc form, Ce adds with Mg-14wt%Ce intermediate alloy form；
(2) by Mg-Zn-Ce alloy cast ingot 420 DEG C of homogenization heat treatments 10 hours；
(3) being extruded on extruder by the Mg-Zn-Ce alloy after Homogenization Treatments, the technological parameter wherein used is: squeeze
Pressure temperature 330 DEG C, extrusion ratio is 25, extrusion speed 5mm/s, and extrusion speed is constant；
(4) by the Mg-Zn-Ce alloy after extruding at 350 DEG C of heat treatments 4 hours, last air cooling.
The Mg-Zn-Ce alloy using process above to process carries out performance test, and wherein damping capacity refers to that alloy is being answered
Becoming amplitude is 0.001, and frequency of vibration is the room temperature damping capacity under the conditions of 1Hz；Mechanical property refers to alloy at room temperature anti-
Tensile strength, yield strength and elongation percentage.
Result shows, As-extruded Mg-1.03%Zn-0.56%Ce alloy tensile strength after Overheating Treatment is
246.1MPa, yield strength are 175.7MPa, elongation percentage is 14.5%, and strain is 10-3Time damping be 0.057, this magnesium alloy
Damping capacity is compared comparative example 2 and is improve 97%, has excellent combination property.And the weight hundred of the rare earth element of this magnesium alloy
Proportion by subtraction is less than 1.5%, alloying low cost.
In order to more intuitively show advantages of the present invention, the damping capacity of the Mg-Zn-Ce alloy after above-described embodiment is processed
It is set forth in table 1 below.
Mg-Zn-Ce alloy after table 1 processes damps and mechanical property table.
According to above-described embodiment and table 1 content, analysis can obtain: adds Zn and the Ce element of trace, cast alloy in pure magnesium
Damping just reached high-damping level；And after crimp and heat treatment coupling technique, the damping and amortization of two kinds of alloys
Can add 400% and 97% compared to cast alloy, be significantly improved, mechanical property is also maintained at relatively Gao Shui simultaneously
Flat.
To sum up, the inventive method can prepare low cost high-damping high-strength magnesium alloy, and this magnesium alloy has well simultaneously
Mechanical property and damping capacity, it is possible to meet vibration absorbing low noise and light-weighted requirement that material is proposed by current development, and
The preparation technology of the present invention, has the advantages such as wide, portable strong, the technique simply ripe and easy realization of versatility, is prepared into
To high-damping high-strength magnesium alloy can be widely applied to the fields such as Aero-Space, defence and military, automobile and track traffic.
It should finally be noted the above embodiment can make those skilled in the art that this is more fully understood
Bright, but limit the present invention never in any form.Therefore, although this specification is to present invention has been detailed description, but,
It will be appreciated by those skilled in the art that and still the present invention can be modified or equivalent；And all are without departing from this
The technical scheme of bright spirit and improvement thereof, it all should be contained in the middle of the protection domain of patent of the present invention.
Claims (5)
1. a low cost high-damping high intensity Mg-Zn-Ce alloy, it is characterised in that the weight/mass percentage composition of each component is: Ce
=0.4～0.6, Zn≤1.5, Fe≤0.08, Mn≤0.02, surplus is magnesium and inevitable impurity.
2. the preparation method of a low cost high-damping high intensity Mg-Zn-Ce alloy, it is characterised in that by crimp and
Heat treatment coupling technique realizes magnesium alloy damping and the balance optimizing of mechanical property, specifically includes following steps:
(1) by claim 1 formula, melting is carried out by vacuum induction melting furnace, at 700～760 DEG C of insulations electromagnetic induction
Stirring makes raw material fully melt, and is cooled to 610～630 DEG C and stands insulation 5～15 minutes, then salt bath after alloy all melts
Water-cooled, the Mg-Zn-Ce alloy cast ingot obtained；Wherein, Zn adds with pure zinc form, Ce is with Mg-14wt%Ce intermediate alloy form
Add；
(2) Mg-Zn-Ce alloy cast ingot step (1) obtained was 400～450 DEG C of homogenization heat treatments 6～15 hours；
(3) the Mg-Zn-Ce alloy after step (2) Homogenization Treatments and extrusion die are incubated 1～3h at 300～360 DEG C；So
After extrude on extruder, the technological parameter wherein used is: extrusion temperature 300～360 DEG C, and extrusion ratio is 25, extruding
Speed 5mm/s, and extrusion speed is constant；
(4) the Mg-Zn-Ce alloy after step (3) being extruded 320～380 DEG C of heat treatments 2～10 hours, last air cooling.
The preparation method of low cost high-damping high intensity Mg-Zn-Ce alloy the most according to claim 2, it is characterised in that
Step (1) heat treatment temperature is 420 DEG C, heat treatment time 10 hours.
The preparation method of low cost high-damping high intensity Mg-Zn-Ce alloy the most according to claim 2, it is characterised in that
Step (2) extrusion temperature is 330 DEG C, extrusion ratio 25.
The preparation method of low cost high-damping high intensity Mg-Zn-Ce alloy the most according to claim 2, it is characterised in that
Step (1) heat treatment temperature is 350 DEG C, heat treatment time 4 hours.
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Cited By (4)
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|---|---|---|---|---|
| CN106939388A (en) * | 2017-05-19 | 2017-07-11 | 重庆大学 | A kind of high strength and low cost high-ductility isotropism Mg Zn y alloys and preparation method thereof |
| CN107904461A (en) * | 2017-11-23 | 2018-04-13 | 重庆科技学院 | A kind of low-cost and high-performance magnesium alloy profiles and preparation method |
| CN112759806A (en) * | 2021-01-18 | 2021-05-07 | 江西轩达电子商务有限公司 | Preparation method of damping material |
| CN117026029A (en) * | 2023-08-09 | 2023-11-10 | 仲恺农业工程学院 | High-strength high-damping aluminum-zinc bimetallic alloy and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939388A (en) * | 2017-05-19 | 2017-07-11 | 重庆大学 | A kind of high strength and low cost high-ductility isotropism Mg Zn y alloys and preparation method thereof |
| CN106939388B (en) * | 2017-05-19 | 2018-05-01 | 重庆大学 | A kind of high strength and low cost high-ductility isotropism Mg-Zn-Y alloys and preparation method thereof |
| CN107904461A (en) * | 2017-11-23 | 2018-04-13 | 重庆科技学院 | A kind of low-cost and high-performance magnesium alloy profiles and preparation method |
| CN112759806A (en) * | 2021-01-18 | 2021-05-07 | 江西轩达电子商务有限公司 | Preparation method of damping material |
| CN117026029A (en) * | 2023-08-09 | 2023-11-10 | 仲恺农业工程学院 | High-strength high-damping aluminum-zinc bimetallic alloy and preparation method thereof |
| CN117026029B (en) * | 2023-08-09 | 2024-03-01 | 仲恺农业工程学院 | High-strength high-damping aluminum-zinc bimetallic alloy and preparation method thereof |
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