CN107460385B - A kind of light foam Mn-Cu alloy high damping material and preparation method thereof - Google Patents
A kind of light foam Mn-Cu alloy high damping material and preparation method thereof Download PDFInfo
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- CN107460385B CN107460385B CN201710741959.4A CN201710741959A CN107460385B CN 107460385 B CN107460385 B CN 107460385B CN 201710741959 A CN201710741959 A CN 201710741959A CN 107460385 B CN107460385 B CN 107460385B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C22/00—Alloys based on manganese
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
- B22F3/1125—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers involving a foaming process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
- B22F3/1134—Inorganic fillers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of light foam Mn-Cu alloy high damping material, one of the bianry alloy be made of manganese metal and copper or addition iron, nickel and aluminium or multicomponent alloy that is a variety of and being formed.The material is prepared by following steps: Mn-Cu alloying pellet is uniformly mixed with foaming agent；The powder mixed is placed in mold, cold moudling is carried out, it is spare to obtain idiosome；Idiosome is carried out again it is hot-forming, obtain consistency be greater than 80% high-densit idiosome；High-densit idiosome is placed in mold, then is foamed, it is cooling after foaming, finally obtain the foam Mn-Cu alloy high damping material of uniform pore diameter.This material overcomes the big problem of traditional high-damping Mn-Cu alloy density, the damping capacity of Mn-Cu alloy is effectively improved by the high density of defects around porosity and cavity simultaneously, in addition this method overcomes the problems such as blowing temperature is high, size distribution is uneven, technological operation is difficult.
Description
Technical field
The present invention relates to a kind of foam type lightweight high damping material and preparation method thereof more particularly to a kind of light foams
Mn-Cu alloy high damping material and preparation method thereof.
Background technique
Mn-Cu alloy is a kind of typical twin-plane boundary relaxation type high damping alloy, and the commercial applications of early stage are conducts
The propeller of naval vessels is to reduce vibration.Since Japanese researchers in 2000 have developed M2052 damping alloy (Mn-20Cu-
5Ni-2Fe, at%) after, (maximum Internal friction reaches for good processability possessed by Mn-Cu alloy and high damping properties
0.06) extensive concern of people is received, especially in aerospace, mechanical engineering, biomedical engineering and instrument and meter etc.
Field has great potential using value.However towards the relatively expensive aerospace structural of cost and operating cost and portion
The fields such as part in application, high specific gravity (the about 7g/cm of Mn-Cu alloy3) its development is significantly limited, it is faced with extremely severe
The material property and component lightweight requirements at quarter.
It is known that foam metal is a kind of new structure having a extensive future and function compatible material.As structure
Material has the characteristics that lightweight, high specific strength；As functional material, have sound insulation (or sound absorption), heat-insulated (or heat dissipation), it is fire-retardant,
Damping, impact energy absorb and a variety of physical properties such as electromagnetic shielding.Therefore, it is contemplated that preparing a kind of foam type Mn-Cu conjunction
Gold had both remained the certain intensity of Mn-Cu alloy material, and since the high density around higher porosity and cavity lacks
It falls into, the specific gravity of Mn-Cu alloy not only can be effectively reduced, but also can be on the basis of material damping capacity itself, further
Improve its damping capacity.Generally, traditional casting is replaced with this foamed metal parts, weight can at least reduce 30%,
And intensity, shock resistance are all greatly improved.Therefore, preparation has the Mn-Cn alloy of porous structure, is expected to realize structure light weight
Change the preparation with function integration material, to meet Mn-Cu alloy in the application need in aerospace field and wider field
It asks.
At present there are many method for preparing foam metal, wherein powder metallurgy foaming method can be used for some higher melting-point
Metal and alloy prepare foam metal, and this method has the advantage that the of less demanding of equipment, simple production process；It is made
Standby pore structure is uniform；Complex component can be prepared；Alloying component can be conveniently adjusted；Can sandwich structure；At present
Attention by more and more researchers.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of light foam Mn-Cu alloy high damping material and its system
Preparation Method, which overcomes the big problem of traditional high-damping Mn-Cu alloy density, while can pass through porosity and cavity surrounding
High density of defects effectively improve the damping capacity of Mn-Cu alloy, in addition foam Mn-Cu alloy is realized using powder metallurgic method
The preparation of high damping material, the preparation method for effectively overcoming conventional porous materials include such as foaming present in foam melt method
The problems such as temperature is high, size distribution is uneven, technological operation difficulty is big.
The technical problems to be solved by the invention are realized using following technical scheme:
A kind of light foam Mn-Cu alloy high damping material, the light foam Mn-Cu alloy high damping material is by gold
Belong to one of bianry alloy or addition iron, nickel and aluminium of manganese and copper composition or multicomponent alloy that is a variety of and being formed；
The density of the bianry alloy or multicomponent alloy is below 5g/cm3。
Further improvement lies in that containing foam hole in the light foam Mn-Cu alloy high damping material, and foam hole is
Closed pore or open-celled structure；
The aperture of the foam hole is 10nm-5000um, porosity 20%-98%.
A kind of preparation method of light foam Mn-Cu alloy high damping material, comprising the following steps:
Step 1: Mn-Cu alloying pellet is uniformly mixed according to a certain percentage with foaming agent, it is spare to obtain powder；
Step 2: the above-mentioned powder mixed is placed in mold, carries out cold moudling, it is spare to obtain idiosome；
Step 3: above-mentioned molding idiosome is carried out again it is hot-forming, obtain consistency be greater than 80% high-densit idiosome；
Step 4: the obtained high-densit idiosome of step 3 being placed in mold, is foamed under certain sintering condition,
It is cooling after foaming, finally obtain the foam Mn-Cu alloy high damping material of uniform pore diameter.
Further improvement lies in that the Mn-Cu alloying pellet in the step 1 is having a size of 10nm-1000um；
Foaming agent in the step 1 is one of sodium chloride, carbonate, metal hydride, and heavy shared by foaming agent
Amount ratio is 1%-90%.
Further improvement lies in that the carbonate is ammonium hydrogen carbonate, strontium carbonate, barium carbonate, calcium carbonate, magnesium carbonate or carbonic acid
One of lithium；The metal hydride is one of titantium hydride, zircoium hydride, magnesium hydride or calcium hydride.
Further improvement lies in that the cold pressing pressure in the step 2 is 100-500MPa.
Further improvement lies in that the hot pressing pressure in the step 3 is 100-500MPa, hot pressing temperature 300-900
DEG C, hot pressing time 10min-10h.
Further improvement lies in that the sintering condition in the step 4 is 400-1100 DEG C of sintering temperature, sintering time
2min-1h。
Further improvement lies in that the sintering process in hot pressing and step 4 in the step 3 is in vacuum or lazy
It is carried out under property gas shield.
Further improvement lies in that mode cooling in the step 4 is air-cooled, water cooling, mist is cold or air-cooled.
The beneficial effects of the present invention are:
1) it is close to overcome traditional high-damping Mn-Cu alloy for light foam Mn-Cu alloy high damping material disclosed by the invention
Big problem is spent, while the damping and amortization of Mn-Cu alloy can be effectively improved by the high density of defects around porosity and cavity
Can, possess the fields such as wider array of application field, especially aerospace and plays its excellent damping noise reduction effect；
2) preparation method disclosed by the invention can effectively overcome Conventional melt foaming etc. to prepare foam Mn-Cu alloy high resistant
The problems such as existing blowing temperature is high when damping material, size distribution is uneven, technological operation difficulty is big, at a lower temperature
The light foam Mn-Cu alloy high damping material that aperture is controllable, pore structure is uniform, element shapes are controllable can efficiently be prepared；
3) preparation method disclosed by the invention, preparation process is simple to operation, time-saving energy-saving, without expensive mold at
This, is suitable for large-scale industrial production.
Detailed description of the invention
Fig. 1 is the flow diagram that powder metallurgic method prepares foam Mn-Cu alloy high damping material；
Fig. 2 is the cross-section morphology that foaming agent is foam Mn-Cu alloy high damping material prepared by sodium chloride；
Fig. 3 is the cross-section morphology that foaming agent is foam Mn-Cu alloy high damping material prepared by carbonate.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating and embodiment, and the present invention is further explained.
A kind of light foam Mn-Cu alloy high damping material, the light foam Mn-Cu alloy high damping material is by gold
Belong to one of bianry alloy or addition iron, nickel and aluminium of manganese and copper composition or multicomponent alloy that is a variety of and being formed.Bianry alloy
Or the density of multicomponent alloy is below 5g/cm3。
Preferably, contain foam hole in light foam Mn-Cu alloy high damping material obtained, and foam hole be closed pore or
Open-celled structure.
Preferably, the aperture of the foam hole is 10nm-5000um, porosity 20%-98%.
As shown in Figure 1, prepared by the use powder metallurgic method of above-mentioned light foam Mn-Cu alloy high damping material, specifically
Step are as follows:
Step 1: Mn-Cu alloying pellet is uniformly mixed according to a certain percentage with foaming agent, it is spare to obtain powder；
Step 2: the above-mentioned powder mixed is placed in mold, carries out cold moudling, it is spare to obtain idiosome；
Step 3: above-mentioned molding idiosome is carried out again it is hot-forming, obtain consistency be greater than 80% high-densit idiosome；
Step 4: the obtained high-densit idiosome of step 3 being placed in mold, is foamed under certain sintering condition,
It is cooling after foaming, finally obtain the foam Mn-Cu alloy high damping material of uniform pore diameter.
Preferably, the Mn-Cu alloying pellet in step 1 is having a size of 10nm-1000um.
Preferably, the foaming agent in step 1 is one of sodium chloride, carbonate, metal hydride.
Preferably, the carbonate in step 1 is ammonium hydrogen carbonate, strontium carbonate, barium carbonate, calcium carbonate, magnesium carbonate or lithium carbonate
One of.
Preferably, the metal hydride in step 1 is one of titantium hydride, zircoium hydride, magnesium hydride or calcium hydride.
Preferably, weight ratio shared by the foaming agent in step 1 is 1%-90%.
Preferably, the cold pressing pressure in step 2 is 100-500MPa.
Preferably, the hot pressing pressure in step 3 is 100-500MPa, and hot pressing temperature is 300-900 DEG C, and hot pressing time is
10min-10h。
Preferably, the sintering condition in step 4 is 400-1100 DEG C of sintering temperature, sintering time 2min-1h.
Preferably, the sintering process in the hot pressing and step 4 in step 3 is under vacuum or inert gas shielding
It carries out.
Preferably, the mode cooled down in step 4 is air-cooled, water cooling, mist is cold or air-cooled.
Illustrate combined with specific embodiments below:
Embodiment 1
Selection foaming agent is sodium chloride, cross-section morphology such as Fig. 2 institute of prepared foam Mn-Cu alloy high damping material
Show.
Embodiment 2
Selection foaming agent is carbonate, cross-section morphology such as Fig. 3 institute of prepared foam Mn-Cu alloy high damping material
Show.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (9)
1. a kind of preparation method of light foam Mn-Cu alloy high damping material, which comprises the following steps:
Step 1: Mn-Cu alloying pellet is uniformly mixed according to a certain percentage with foaming agent, obtains that powder is spare, and foaming agent is
One of sodium chloride, carbonate, metal hydride；
Step 2: the above-mentioned powder mixed is placed in mold, carries out cold moudling, it is spare to obtain idiosome；
Step 3: above-mentioned molding idiosome is carried out again it is hot-forming, obtain consistency be greater than 80% high-densit idiosome；
Step 4: the obtained high-densit idiosome of step 3 being placed in mold, is foamed under certain sintering condition, foaming
After it is cooling, finally obtain the foam Mn-Cu alloy high damping material of uniform pore diameter；
The sintering condition is 400-1100 DEG C of sintering temperature, sintering time 2min-1h.
2. a kind of preparation method of light foam Mn-Cu alloy high damping material according to claim 1, feature exist
In: the Mn-Cu alloying pellet in the step 1 is having a size of 10nm-1000um；
Weight ratio shared by foaming agent is 1%-90% in the step 1.
3. a kind of preparation method of light foam Mn-Cu alloy high damping material according to claim 1, feature exist
In: the carbonate is one of ammonium hydrogen carbonate, strontium carbonate, barium carbonate, calcium carbonate, magnesium carbonate or lithium carbonate；The metal
Hydride is one of titantium hydride, zircoium hydride, magnesium hydride or calcium hydride.
4. a kind of preparation method of light foam Mn-Cu alloy high damping material according to claim 1, feature exist
In: the cold pressing pressure in the step 2 is 100-500MPa.
5. a kind of preparation method of light foam Mn-Cu alloy high damping material according to claim 1, feature exist
In: the hot pressing pressure in the step 3 is 100-500MPa, and hot pressing temperature is 300-900 DEG C, hot pressing time 10min-
10h。
6. a kind of preparation method of light foam Mn-Cu alloy high damping material according to claim 1, feature exist
In: the sintering process in hot pressing and step 4 in the step 3 is carried out under vacuum or inert gas shielding.
7. a kind of preparation method of light foam Mn-Cu alloy high damping material according to claim 1, feature exist
In: the mode cooled down in the step 4 is air-cooled, water cooling, mist is cold or air-cooled.
8. a kind of preparation method of light foam Mn-Cu alloy high damping material according to claim 1, feature exist
In: in the bianry alloy or addition iron, nickel and aluminium that the foam Mn-Cu alloy high damping material is made of manganese metal and copper
One or more and formation multicomponent alloy；
The density of the bianry alloy or multicomponent alloy is below 5g/cm3。
9. a kind of preparation method of light foam Mn-Cu alloy high damping material according to claim 1, feature exist
In: contain foam hole in the foam Mn-Cu alloy high damping material, and foam hole is closed pore or open-celled structure；
The aperture of the foam hole is 10nm-5000um, porosity 20%-98%.
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| CN108359827B (en) * | 2018-02-01 | 2019-08-23 | 上海交通大学 | The preparation method of the porous antiferromagnetic marmem of MnNi |
| CN109027425B (en) * | 2018-07-26 | 2020-05-26 | 西安交通大学 | High-damping alloy metamaterial pipeline vibration and noise reduction device |
| CN109304463A (en) * | 2018-10-09 | 2019-02-05 | 中国科学院合肥物质科学研究院 | A kind of aperture, the adjustable high porosity Mn-Cu base high-damping alloy of pass production method |
| CN114535581B (en) * | 2022-01-10 | 2024-01-26 | 西安理工大学 | Preparation method of nano-porous copper with hierarchical pore structure |
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| JP2006028557A (en) * | 2004-07-13 | 2006-02-02 | Bridgestone Corp | Damping alloy and base isolation device |
| CN102154600B (en) * | 2011-05-25 | 2012-08-01 | 重庆大学 | Heat treatment method for improving damping stability of medium manganese-manganese-copper alloy |
| CN103421981A (en) * | 2013-08-08 | 2013-12-04 | 常熟市东方特种金属材料厂 | High-damping shape memory alloy |
| CN104152764B (en) * | 2014-08-31 | 2016-02-03 | 中南大学 | A kind of P/m Porous copper-manganese damping material and preparation method thereof |
| CN106424716B (en) * | 2016-12-12 | 2018-04-27 | 中南大学 | Improve the method for copper-manganese damping sintered alloy performance with ferrous oxalate |
| CN106392064B (en) * | 2016-12-12 | 2018-01-02 | 中南大学 | Improve the method for high manganese copper-manganese damping alloy sintering character with nickel oxalate |
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