CN107012417A - A kind of preparation method of high-intensity high-damping MnCu based alloys - Google Patents
A kind of preparation method of high-intensity high-damping MnCu based alloys Download PDFInfo
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- CN107012417A CN107012417A CN201710418480.7A CN201710418480A CN107012417A CN 107012417 A CN107012417 A CN 107012417A CN 201710418480 A CN201710418480 A CN 201710418480A CN 107012417 A CN107012417 A CN 107012417A
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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
- C22F3/00—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
- C22F3/02—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons by solidifying a melt controlled by supersonic waves or electric or magnetic fields
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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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- 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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- 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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
Abstract
The present invention relates to a kind of preparation method of high-intensity high-damping MnCu based alloys, belong to field of alloy preparation technology.A kind of preparation method of high-intensity high-damping MnCu based alloys, by MnCu base foundry alloys in 600T2/ m~600T2Room temperature is cooled to after being incubated 0.5~1 hour in 1000~1180 DEG C under/m gradient magnetic, semi-solidification alloy is obtained；Gained semi-solidification alloy is subjected to hot rolling, then after cold-rolling treatment, solution treatment is carried out；Sample obtained by solution treatment is placed in 0.01~20T magnetic fields, room temperature is cooled to after 0.5~16 hour in insulation at temperature is 350~550 DEG C, obtains target MnCu based alloys.MnCu based alloys prepared by the method for the invention improve 5%~15% than identical Mn content alloys tensile strength raising 10~20% in the case where keeping elongation percentage not reduce substantially prepared by prior art, damping Internal friction.
Description
Technical field
The present invention relates to a kind of preparation method of high-intensity high-damping MnCu based alloys, belong to field of alloy preparation technology.
Background technology
The damping alloy of the features such as with high intensity, high life and high temperature resistant, is for reducing the one of vibration source and noise source
Class critical function material, need to suppress the precision instrument of noise and environmental protection, the high-end equipment of Aero-Space, national defense and military and
The fields such as automobile have important application.Twin type γ Mn bases damping alloys due to higher application temperature, preferable corrosion resistance,
And the advantage such as be easily worked and favored.However, because damping capacity is generally mutually restricted with mechanical property, currently
The γ Mn bases damping alloys of application because damping capacity and mechanical property matching deficiency be restricted its use condition and scope, visit
Rope research improves the new method of damping material damping and mechanical property, improve its performance and application have important theory and
Application value.
Twin type γ MnCu base damping alloys are one of widest high damping alloys of research, representational to have
Incramute (Britain/Mn-37Cu-4.25Al-3Fe-1.5Ni), Sonoston (U.S./58Cu-40Mn-2Al), ABPOPA
Alloy (Soviet Union/Mn-Cu-Al-Fe-Ni-Zn), M2052 (Japan/Mn-20Cu-5Ni-2Fe), MC-77 (Shanghai Communications University),
2310 (A Survey of East China Shipbuilding Institutes/Mn-Cu-Al-Fe-Ni-Zn) and ZMnD-1J (Harbin University of Science and Technology/Mn-Cu-Al-Zn)
Deng trade mark alloy product.Main face-centred cubic structure (fcc) the γ phases using Mn of this kind of alloy show as matrix below Neel temperature
Show anti-ferromagnetism, when alloy quenching quick by γ phase regions, fcc lattice transformations are face centered tetragonal lattice (fct), are formed superfine
{ 101 } face martensitic twin substructure.Because paramagnetic-antiferromagnetic transition temperature and fcc-fct martensitic transformation temperatures ten are tapped
Closely, the mobile twin boundary under external force and the twisted effect of lattice caused by pros' degree, and there is the peak value of relaxation type decay energy, realize
High damping.Paramagnetic-antiferromagnetic transition temperature of γ MnCu base damping alloys is with fcc-fct martensitic transformation temperatures by composition shadow
Sound is very big, and the damping alloy Mn contents of application are usually no more than 70wt%, and low Mn alloys obtain high-damping in such as making, it is necessary to pass through
Cross metastable area of dissolving each other (400-600 DEG C) timeliness and produce spinodal decomposition formation nanoscale richness Mn phases and richness Cu phases, in rich Mn during cooling
Antiferromagnetic order and lattice coupling occur for area, then induce alloy and occur martensitic traoformation.Therefore, martensitic twin structure
Control is the synchronous key point for improving alloy mechanics and damping capacity.
Chinese invention patent 201510893405.7 proposes that, using subzero treatment raising martensite transfor mation amount, forging can be improved
The damping capacity of MnCu base damping alloys.Xie Jinwu etc. is published in the paper " dendritic segregation pair of functional material 46 (2015) 13087
The influence of MnCu alloy damping characteristics " is it is also proposed that by optimized alloy process of setting, it is found that having for Slow cooling formation is notable
The solidification arborescent structure of Mn component segregations can be promoted in room temperature in spinodal decomposition by improving the martensitic transformation point of alloy
Twin structure is formed, high temperature damping and amortization is realized.By the spinodal decomposition, crystallite dimension, the dislocation density that optimize metastable state richness Mn phases
And twin texture etc. obtains high Mn content nanoscale richness Mn enrichment regions, twin is refined, alloy martensite can also be improved and changed
Temperature.The damping capacity of γ MnCu based alloys can also further be improved by the doping of the multicomponents such as Ni, Ce, Al, Zn and Fe.Its
Although middle addition Fe reduces damping capacity, cost of alloy can be reduced and mechanical property is improved, and received much concern.Therefore,
The organizational controls of high-damping γ MnCu based alloys can be summarized as：1) alloy graining process is controlled, the dendrite of Mn component segregations is formed
Tissue；2) promote the spinodal decomposition of the metastable Qu Fu Mn phases of dissolving each other of low temperature using means such as element doping and heat treating regimes, improve
Martensitic transformation temperature.If by two methodses control solidification and spinodal decomposition process, using segregation through diffusion mechanism, promoting shape
Into the enrichment region of rich Mn phases, the purpose that optimization improves γ MnCu based alloy damping capacities can reach.If Fe or Ni can be combined simultaneously
The invigoration effect of element doping, improves the mechanical property of γ MnCu based alloys, in the same of effectively reduction damping alloy production cost
Its practicality of Shi Tigao.
In summary, this area still can also obtain high-damping MnCu based alloys seeking a kind of method and can obtain high intensity
Process, while not relating to the use of the technology report that magnetic field controls γ MnCu based alloy microstructure and properties in existing document
Road.
The content of the invention
The present invention controls alloy graining for solving the contradictory relation between high intensity and high-damping using different type magnetic field
And heat treatment process, promote the formation of richness Mn phase enrichment regions, improve martensitic traoformation, refine feather organization.Simultaneously using different
The stage orientations in magnetic field are acted on, and promote the orientations of twin, while twin spacing raising intensity is refined, improve it
Damping capacity.
The purpose of the present invention is to be directed to problem of the prior art, proposes a kind of preparation of high-intensity high-damping MnCu based alloys
Method.
A kind of preparation method of high-intensity high-damping MnCu based alloys, including following processing steps：
By MnCu base foundry alloys in -600T2/ m~600T2/ m gradient magnetic (is free of 0T2/ m) under in 1000~1180 DEG C
Insulation is cooled to room temperature after 0.5~1 hour with 1~5 DEG C/minute of cooldown rate, obtains semi-solidification alloy；Gained half is solid
State solidified superalloy carries out hot rolling in 700~800 DEG C, then after cold-rolling treatment, and solution treatment is carried out in 750~850 DEG C；Will be solid
Sample obtained by molten processing is placed in 0.01~20T magnetic fields, after insulation at temperature is 350~550 DEG C 0.5~16 hour, with 0.5
~5 DEG C/minute of cooldown rate is cooled to room temperature, obtains target MnCu based alloys.
" gradient magnetic " of the present invention refers to that magnetic field has magnetic induction intensity gradient axially or radially, particularly at this
The size and difference of " gradient magnetic ", i.e. alloy sample are defined with the product of magnetic induction intensity and magnetic induction intensity gradient in invention
Product can be acted under " gradient magnetic " by magnetizing force herein.Special selection magnetic induction density B is parallel with gravity direction, along this
There are gradient grad B in direction, is now represented with Bgrad B this " gradient magnetic ".
In above-mentioned technical proposal, preferably described hot-rolled condition is 750~800 DEG C.
In above-mentioned technical proposal, preferably described cold rolling condition is that reduction in pass is 10~70%, more preferably 30
~70%, most preferably 40~70%.
In above-mentioned technical proposal, the preferably described solution treatment time be 0.5~4h, more preferably 0.5~3h, it is optimal
Elect 0.5~2h as.
In above-mentioned technical proposal, preferably sample obtained by solution treatment is placed in 0.1~16T magnetic fields, more preferably 1
~12T, most preferably 8~10T.
In above-mentioned technical proposal, preferably cooldown rate be 0.5~2 DEG C/minute, more preferably 0.5~1.5 DEG C/minute, most
Preferably 0.5~1 DEG C/minute.
Further, by MnCu base foundry alloys in -600T2/ m~600T2/ m gradient magnetic (is free of 0T2/ m) under in
1000~1180 DEG C insulation 0.5~1 hour after room temperature is cooled to 1~5 DEG C/minute of cooldown rate, obtain semi-solidification conjunction
Gold, wherein, preferably cooldown rate be 0.5~2 DEG C/minute, more preferably 0.5~1.5 DEG C/minute, most preferably 0.5~1 DEG C/
Point.
Further, sample obtained by solution treatment is placed in 0.01~20T magnetic fields, protected in the case where temperature is 350~550 DEG C
Temperature is cooled to room temperature after 0.5~16 hour with 0.5~5 DEG C/minute of cooldown rate, obtains target MnCu based alloys, wherein, it is excellent
It is 0.5~2 DEG C/minute, most preferably more preferably 0.5~1.5 DEG C/minute, 0.5~1 DEG C/minute to select cooldown rate.
Further, the MnCu bases foundry alloy is made as follows：According to target MnCu based alloys constitute quality percentage
Than using purity >=99.9wt% electrolysis Mn pieces, non-oxygen copper bar, pure Fe and electrolysis Ni, using after high vacuum electric arc melting
Inhale casting or casting or similar smelting mode prepare MnCu base foundry alloys in smelting metal mould in vaccum sensitive stove,
Wherein, target MnCu based alloys composition and composition are：Cu mass percent is 15%~23%, Fe quality hundred
It is 0%~6% to divide the mass percent that ratio is 0%~3%, Ni, and surplus is Mn.
Further, the MnCu bases foundry alloy uses high vacuum electric arc furnaces in 0.25~0.75 standard atmospheric pressure argon gas
Or lower inhale of nitrogen protection is cast；Using vacuum induction melting furnace 0.25~0.75 standard atmospheric pressure argon gas or nitrogen protection under
Cast and form in copper mold or other metal dies.
It is a further object of the present invention to provide the MnCu based alloys as made from the above method, the MnCu based alloys, wherein
The mass percent that the mass percent that Cu mass percent is 15%~23%, Fe is 0%~3%, Ni is 0%~6%,
Surplus is Mn, and the tensile strength of MnCu based alloys is 410~655MPa, and elongation percentage is 25%~35%, and damping Internal friction is
27%~37%.
Beneficial effects of the present invention are：Preparation method of the present invention applies gradient magnetic control γ MnCu base damping alloys
Nascent Mn dendrite, the aging strengthening model of richness Mn phases in metastable area of dissolving each other, base are controlled with reference to steady strong magnetic field in semi-solidification
In high-intensity magnetic field to solute distribute and spinodal decomposition collective effect, the type γ MnCu alloy martensites phase transformations of comprehensive regulation twin and its
Mechanics and damping capacity.
The method of the invention applies gradient magnetic and controls γ MnCu base damping alloys to be come into being Mn in semi-solidification
Crystalline substance, the aging strengthening model of richness Mn phases in metastable area of dissolving each other is controlled with reference to steady strong magnetic field, and solute is distributed and adjusted based on high-intensity magnetic field
The collective effect that width is decomposed, the type γ MnCu alloy martensites phase transformations of comprehensive regulation twin and its mechanics and damping capacity.Simultaneously can
Pass through Fe and Ni doping and combined magnetic field acting regulatory twin type γ MnCuNiFe alloy martensites phase transformations and its mechanics and damping
Performance.By implementing the above content of the invention, the MnCu based alloys of preparation are being protected than identical Mn content alloys prepared by prior art
Tensile strength improves 10~20% in the case of holding elongation percentage and not reducing substantially, and damping Internal friction improves 5%~15%.
Brief description of the drawings
Fig. 1 present invention process flow charts.
Embodiment
Following non-limiting examples can make one of ordinary skill in the art be more fully understood the present invention, but not with
Any mode limits the present invention.
Test method described in following embodiments, is conventional method unless otherwise specified；The reagent and material, such as
Without specified otherwise, commercially obtain.
The high vacuum electric arc furnaces model ZFH-300-70 used in the embodiment of the present invention.
The vacuum induction melting furnace model TG100A-25 used in the embodiment of the present invention.
The embodiment of the present invention uses JMTD-12T100 superconducting magnets.
JSD-20T52 superconducting magnets are used in the embodiment of the present invention.
The vacuum heat treatment furnace model VHT-II used in the embodiment of the present invention.
Stress-strain curves test is carried out simultaneously using SANS-CMT5105 electronic universal testers in the embodiment of the present invention
Obtain tensile strength.
One preferred embodiment of the invention is：
(1) prepared by foundry alloy：Using purity >=99.9wt% electrolysis Mn pieces, non-oxygen copper bar, pure Fe and electrolysis Ni, use
Casting is inhaled after high vacuum electric arc melting or in smelting metal mould prepared by casting or similar smelting mode in vaccum sensitive stove
MnCu base foundry alloys；
(2) semi-solid alloy solidifies under gradient magnetic：The MnCu base foundry alloys prepared are placed in 600T2/ m~600T2/m
Gradient magnetic (be free of 0T2/ m) under be incubated 0.5~1 hour 1000~1180 DEG C of Mushy Zones, with 1~5 DEG C/minute of cooling
To room temperature, semi-solidification alloy is obtained.
(3) cold rolling and solution treatment：By semi-solidification alloy obtained by step (2) through 700~800 DEG C of hot rollings, Ran Houjing
After cold-rolling treatment, 750~850 DEG C of solution treatment is carried out.
(4) steady magnetic field Ageing Treatment：Sample obtained by step (3) is placed in 0.01~20T magnetic fields, is 350 in temperature
Under the conditions of~550 DEG C, after being incubated 0.5~16 hour, room temperature is cooled to 0.5~5 DEG C/minute of cooldown rate, MnCu bases are obtained
High damping properties alloy.
Embodiment 1
(1) prepared by foundry alloy：It is molten using vaccum sensitive stove using purity >=99.9wt% electrolysis Mn pieces and non-oxygen copper bar
Gold metallurgy belongs to, and preparation Mn-15%Cu foundry alloys in copper mold are cast under the protection of 0.5 standard atmospheric pressure argon gas；
(2) semi-solid alloy solidifies under gradient magnetic：The MnCu base foundry alloys prepared are placed in 92.1T2/ m gradient
0.5 hour is incubated 1000 DEG C of Mushy Zones under magnetic field, room temperature is cooled to 5 DEG C/minute of cooldown rate, semisolid is obtained and coagulates
Gu alloy.
(3) cold rolling and solution treatment：By semi-solidification alloy obtained by step (2) through 750 DEG C of hot rollings, then through passage pressure
After lower amount is 40% cold-rolling treatment, in progress solution treatment 1h at 850 DEG C.
(4) steady magnetic field Ageing Treatment：Step (3) institute sample is placed in 20T magnetic fields, under the conditions of temperature is 450 DEG C,
After insulation 4 hours, room temperature is cooled to 5 DEG C/minute of cooldown rate, MnCu base high-damping property alloys are obtained.
The tensile strength of the Mn-15%Cu alloys prepared is 410MPa, and elongation percentage is 35%, and damping Internal friction is
31%.
Comparative example 1
Alloy preparation process and composition are same as Example 1, do not apply gradient magnetic in (2) step, in (4) step
Do not apply steady magnetic field, remaining processing is same as Example 1, the tensile strength of the Mn-15%Cu alloys prepared is
372MPa, elongation percentage is 36%, and damping Internal friction is 28%.
It can be seen that, carried using the Mn-15%Cu alloys of the gained of the embodiment of the present invention 1 compared to the tensile strength of the alloy of comparative example 1
High by 10%, damping Internal friction improves 11%.
Embodiment 2
(1) prepared by foundry alloy：Using purity >=99.9wt% electrolysis Mn pieces, non-oxygen copper bar and pure Fe, using high vacuum
Casting is inhaled after electric arc melting and prepares Mn-22%Cu-2%Fe foundry alloys；
(2) semi-solid alloy solidifies under gradient magnetic：The Mn-22%Cu-2%Fe foundry alloys prepared are placed in 600T2/
0.8 hour is incubated 1050 DEG C of Mushy Zones under m gradient magnetic, room temperature is cooled to 2 DEG C/minute of cooldown rate, obtained
Semi-solidification alloy.
(3) cold rolling and solution treatment：By semi-solidification alloy obtained by step (2) through 800 DEG C of hot rollings, then through passage pressure
After lower amount is 50% cold-rolling treatment, in progress solution treatment 2h at 800 DEG C.
(4) steady magnetic field Ageing Treatment：Sample obtained by step (3) is placed in 12T magnetic fields, is 550 DEG C of conditions in temperature
Under, after being incubated 16 hours, room temperature is cooled to 1 DEG C/minute of cooldown rate, Mn-23%Cu-2%Fe high damping properties is obtained and closes
Gold.
The tensile strength of the Mn-23%Cu-2%Fe alloys prepared is 558MPa, and elongation percentage is 25%, damps in-fighting
It is worth for 27%.
Comparative example 2
Alloy preparation process and composition are same as Example 2, do not apply gradient magnetic in (2) step, in (4) step
Do not apply steady magnetic field, remaining processing is same as Example 2, the tensile strength of the Mn-23%Cu-2%Fe alloys prepared
For 470MPa, elongation percentage is 22%, and damping Internal friction is 25%.
It can be seen that, compare the 2-in-1 golden tension of comparative example using the Mn-23%Cu-2%Fe alloys of the gained of the embodiment of the present invention 2
Intensity improves 19%, and damping Internal friction improves 8%.
Embodiment 3
(1) prepared by foundry alloy：Using purity >=99.9wt% electrolysis Mn pieces, non-oxygen copper bar, pure Fe and electrolysis Ni, use
The protection of vacuum continuous casting nitrogen prepares Mn-20%Cu-3%Fe-6%Ni foundry alloys；
(2) semi-solid alloy solidifies under gradient magnetic：The Mn-20%Cu-3%Fe-6%Ni foundry alloys prepared are put
In -600T21 hour is incubated 1180 DEG C of Mushy Zones under/m gradient magnetic, room is cooled to 1 DEG C/minute of cooldown rate
Temperature, obtains semi-solidification alloy.
(3) cold rolling and solution treatment：By semi-solidification alloy obtained by step (2) through 700 DEG C of hot rollings, then through passage pressure
After lower amount is 70% cold-rolling treatment, in progress solution treatment 2h at 750 DEG C.
(4) steady magnetic field Ageing Treatment：Sample obtained by step (3) is placed in 0.01T magnetic fields, is 350 DEG C of bars in temperature
Under part, after being incubated 0.5 hour, room temperature is cooled to 0.5 DEG C/minute of cooldown rate, Mn-20%Cu-3%Fe-6%Ni is obtained high
Damping capacity alloy.
The tensile strength of the Mn-20%Cu-3%Fe-6%Ni alloys prepared is 655MPa, and elongation percentage is 32%, resistance
Buddhist nun's Internal friction is 37%.
Comparative example 3
The composition that the embodiment 1 of Chinese invention patent 201410214956.1 is referred to be Mn71.17%, Ni2.23%,
Al2.68%, Fe2.27%, C0.005%, Si0.08%, P0.017%, S0.0043%, N0.030%, O0.006%, Yu Wei
The tensile strength of Cu alloys is 594MPa, and elongation percentage is 35%, and damping Internal friction is 32%
Alloy in comparative example 3 is compared using embodiments of the invention 3 in the case where keeping elongation percentage not reduce substantially to resist
Tensile strength improves 10%, and damping Internal friction improves 15%.
Claims (4)
1. a kind of preparation method of high-intensity high-damping MnCu based alloys, it is characterised in that：Including following processing steps：
By MnCu base foundry alloys in -600T2/ m~600T2/ m gradient magnetic (is free of 0T2/ m) under in 1000~1180 DEG C insulation
Room temperature is cooled to 1~5 DEG C/minute of cooldown rate after 0.5~1 hour, semi-solidification alloy is obtained；Gained semisolid is coagulated
Gu alloy carries out hot rolling in 700~800 DEG C, then after cold-rolling treatment, solution treatment is carried out in 750~850 DEG C；At solid solution
Reason gained sample is placed in 0.01~20T magnetic fields, after insulation at temperature is 350~550 DEG C 0.5~16 hour, with 0.5~5
DEG C/minute cooldown rate be cooled to room temperature, obtain target MnCu based alloys.
2. according to the method described in claim 1, it is characterised in that：The MnCu bases foundry alloy is made as follows：Press mesh
MnCu based alloys composition mass percent is marked, using purity >=99.9wt% electrolysis Mn pieces, non-oxygen copper bar, pure Fe and electrolysis
Ni, is cast using being inhaled after high vacuum electric arc melting or is cast or similar smelting mode in smelting metal mould in vaccum sensitive stove
MnCu base foundry alloys are prepared,
Wherein, target MnCu based alloys composition and composition are：Cu mass percent is 15%~23%, Fe mass percent
It is 0%~6% for 0%~3%, Ni mass percent, surplus is Mn.
3. method according to claim 2, it is characterised in that：The MnCu bases foundry alloy is existed using high vacuum electric arc furnaces
0.25~0.75 standard atmospheric pressure argon gas or lower inhale of nitrogen protection are cast；Or using vacuum induction melting furnace in 0.25~0.75 standard
Cast and form in copper mold or other metal dies under atmospheric pressure argon gas or nitrogen protection.
4. high-intensity high-damping MnCu based alloys made from any one of claims 1 to 3 methods described, it is characterised in that：It is described
MnCu based alloys, wherein, Cu mass percent is that 15%~23%, Fe mass percent is 0%~3%, Ni quality
Percentage is 0%~6%, and surplus is Mn, and the tensile strength of MnCu based alloys is 410~655MPa, elongation percentage is 25%~
35%, damping Internal friction is 27%~37%.
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Cited By (5)
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| CN107641732A (en) * | 2017-09-19 | 2018-01-30 | 西南交通大学 | A kind of preparation method of high-damping two-phase Mn Cu alloys |
| CN108559896A (en) * | 2018-04-16 | 2018-09-21 | 上海大学 | Cast high-damping manganese copper alloy material and its manufacturing method |
| CN110106458A (en) * | 2019-04-30 | 2019-08-09 | 中国科学院合肥物质科学研究院 | A kind of heat treatment method forging state Manganese Copper Shock-absorption Alloy |
| CN113174502A (en) * | 2021-03-24 | 2021-07-27 | 上海大学 | Ultrahigh-damping manganese-copper alloy prepared by directional solidification and preparation method thereof |
| CN113755729A (en) * | 2021-08-18 | 2021-12-07 | 上海大学 | Directionally solidified high-damping manganese-copper alloy material in strong magnetic field and preparation method thereof |
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