CN100497691C - Shape memory alloy of composite rare earth, copper, zinc, and aluminum in use for fabricating energy dissipation device of engineering structural framework - Google Patents
Shape memory alloy of composite rare earth, copper, zinc, and aluminum in use for fabricating energy dissipation device of engineering structural framework Download PDFInfo
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- CN100497691C CN100497691C CNB2007100223866A CN200710022386A CN100497691C CN 100497691 C CN100497691 C CN 100497691C CN B2007100223866 A CNB2007100223866 A CN B2007100223866A CN 200710022386 A CN200710022386 A CN 200710022386A CN 100497691 C CN100497691 C CN 100497691C
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Abstract
This invention relates to a composite rare earth/Cu/Zn/Al shape-memory alloy for producing engineering frame-structure energy dissipater. The composite rare earth/Cu/Zn/Al shape-memory alloy is composed of: Zn 23.4-25%, Al 3.4-3.5%, Ni 0.9-1.0%, and Cu as balance. During the smelting process, composite rare earth refiner 0.06-0.09% is added. After smelting, the composite rare earth/Cu/Zn/Al shape-memory alloy is cast in an ingot with a diameter of 80 mm and a length of 150 mm. After annealing treatment, the 2-3 mm thick surface dezincification layer is removed, and the ingot is forged into 11 mm thick plate, and then 3 mm thick plate. Last the plate is subjected to thermal treatment to obtain composite rare earth/Cu/Zn/Al shape-memory alloy, which can be used to produce shape-memory alloy energy dissipater with simple structure and good damping effect.
Description
Technical field
The present invention relates to the copper-zinc-aluminum shape memory alloy technical field, particularly a kind of composite rare earth copper-zinc-aluminum shape memory alloy is used to make dissipation of energy device of engineering structural framework.
Background technology
Because the recoverable strain amount height of shape memory alloy, loading and unloading does not coincide and forms hysteretic loop in the deformation process, therefore can consume big energy, reaches the purpose of passive energy dissipation.More existing vibration-control systems embody some limitation on the engineering in application: the problem of for example aging and weather resistance, the reliability of long term operation, the renewal after shaking by force and replacement problem and can't recover or the like after shaking by force.In the engineering field, utilize the special performance exploitation of memory alloy material and driving mechanism and the energy consumer that development is suitable for the engineering field, become a focus of research.Shape memory alloy has shape memory effect and superelastic effect, normal temperature can be combined with earthquake isolating equipment for the shape memory alloy of superelastic down, in the vibrations process, utilize the super-elasticity hysteretic energy dissipation vibration energy of shape memory alloy on the one hand, on the other hand when device produces residual set after shock effect, the restorer of utilizing the super elastic shape memory alloy performance to produce, earthquake isolating equipment is resetted, so other material can't be by comparison.
The present invention is directed to this problem, developed a kind of with composite rare earth, copper, zinc, and aluminum memory alloy material making engineering structure energy consumer.Through inquiry, not seeing has relevant patent to deliver.
Summary of the invention
The present invention relates to a kind of composite rare earth copper-zinc-aluminum shape memory alloy that is used to make dissipation of energy device of engineering structural framework, it is characterized by: its composition is Zn23.4%-25%, Al3.4%-3.5%, Ni0.9%-1.0%, Yu Weitong.In the smelting process, and adding compound rare-earth fining agent (wherein: La45.5%, Ce44.9%, Pr7.7%, Nd1.9%) 0.06%-0.09% pours into the ingot casting that diameter is φ 80 * 150mm after the melting.Anneal is to be heated to 820 ℃ of insulations furnace cooling after 24 hours, removes the dezincify layer of surperficial 2-3mm then, forges the thick sheet material to 11mm again, is rolled into the 3mm thin plate at last.Heat-treat then, its concrete technology is: 850 ℃ of insulations are quenched after 30 minutes in the room temperature oil, carry out (being incubated 30 minutes) in 150 ℃ of oil again and 50 ℃ of water in (being incubated 15 minutes) two-stage ageing treatment.Utilize the composite rare earth copper-zinc-aluminum shape memory alloy material that obtains, can be used for the simple shape memory alloy dissipation energy device of manufacturing structure.Its concrete size can determine that structure iron as shown in Figure 1 according to the actual requirement of using.
The above-mentioned composite rare earth copper-zinc-aluminum shape memory alloy that is used to make dissipation of energy device of engineering structural framework, composition can be preferably: Zn24.12%, Al3.46%, Ni0.98%, Yu Weitong is to guarantee that obtaining alloy phase height Af is-10 ℃; Compound rare-earth fining agent addition can be preferably 0.07%.
Description of drawings
The structure iron of Fig. 1 composite rare earth copper-zinc-aluminum shape memory alloy energy consumer
Fig. 2 installs composite rare earth copper-zinc-aluminum shape memory alloy energy consumer engineering structural framework figure
Fig. 3 is installed respectively by common energy consumer and composite rare earth, copper, zinc, and aluminum memorial alloy energy consumer framework effectiveness in vibration suppression compares
Embodiment
Embodiment 1
According to the inventive method, be starting material with electrolytic copper, 0# zinc and 00# aluminium, through the medium-frequency induction furnace melting, in the smelting process, add the compound rare-earth fining agent (wherein: La45.5%, Ce44.9%, Pr7.7%, Nd1.9%) 0.06%, pour into the ingot casting that diameter is φ 80 * 150mm after the melting.By analysis, its composition is Zn23.6%, Al3.49%, Ni0.91%, Yu Weitong.Anneal is to be heated to 820 ℃ of insulations furnace cooling after 24 hours, removes the dezincify layer of surperficial 2-3mm then, forges the thick sheet material to 11mm again, is rolled into the 3mm thin plate at last.Heat-treat then, its concrete technology is: 850 ℃ of insulations are quenched after 30 minutes in the room temperature oil, carry out (being incubated 30 minutes) in 150 ℃ of oil again and 50 ℃ of water in (being incubated 15 minutes) two-stage ageing treatment.
With the above-mentioned composite rare earth copper-zinc-aluminum shape memory alloy of preparing, be installed on the engineering framework structure as shown in Figure 2.When frame vibration, mechanism's stress deformation, composite rare earth copper-zinc-aluminum shape memory alloy energy consumer be also distortion simultaneously.When the composite rare earth copper-zinc-aluminum shape memory alloy energy consumer is in martensitic state, utilize the hysteretic energy that forward and reverse flexural deformation produced of alloy sheets to carry out structural vibrations control, and saved material heating, process of cooling, simplified control device and control process; When the composite rare earth copper-zinc-aluminum shape memory alloy energy consumer is in austenitic state, because the pseudoelasticity effect of shape memory alloy, the distortion of alloy sheets will recover when frame vibration is returned to the equilibrium theory of tide in very big deformation range, this process mechanical energy that the engineering framework structure in use causes that dissipated simultaneously, damping effect is good.
Embodiment 2
According to the inventive method, be starting material with electrolytic copper, 0# zinc and 00# aluminium, through the medium-frequency induction furnace melting, in the smelting process, add the compound rare-earth fining agent (wherein: La45.5%, Ce44.9%, Pr7.7%, Nd1.9%) 0.07%, pour into the ingot casting that diameter is φ 80 * 150mm after the melting.By analysis, its composition is Zn24.10%, Al3.46%, Ni0.98%, Yu Weitong.Anneal is to be heated to 820 ℃ of insulations furnace cooling after 24 hours, removes the dezincify layer of surperficial 2-3mm then, forges the thick sheet material to 11mm again, is rolled into the 3mm thin plate at last.Heat-treat then, its concrete technology is: 850 ℃ of insulations are quenched after 30 minutes in the room temperature oil, carry out (being incubated 30 minutes) in 150 ℃ of oil again and 50 ℃ of water in (being incubated 15 minutes) two-stage ageing treatment.
With the above-mentioned composite rare earth copper-zinc-aluminum shape memory alloy of preparing, be installed on the engineering framework structure as shown in Figure 2, damping effect is fine.
Fig. 3 has provided the attenuating that common energy consumer and composite rare earth, copper, zinc, and aluminum memorial alloy energy consumer framework vibration damping are installed respectively and has compared.Within the first five of common energy consumer time distortion Shang Zaiqi elastic range, increase structural entity rigidity, improve structural damping, quicken the effect of vibration damping so can play.But to the 7th when vibration, common energy consumer " relaxes ", exceeds elastic recovery scope generation permanent plastic deformation.At this moment, under same initial constraint, common energy consumer no longer can play the effect that increases structural rigidity, also just no longer can vibration damping, and Fig. 3 (a) has illustrated common energy consumer to experience round-robin vibration damping situation for several times.And install after the use repeatedly of composite rare earth, copper, zinc, and aluminum memorial alloy energy consumer, effectiveness in vibration suppression does not go down, and its advantage is just demonstrated fully, favorable damping performance after Fig. 3 (b) has illustrated it to recycle five times, 20 times.Clearly, and it is better that the framework reusability of composite rare earth, copper, zinc, and aluminum memorial alloy energy consumer is installed, and after repeatedly using the favorable damping effect arranged still.
Through the contrast experiment as can be seen, see Table 1, load onto after the composite rare earth, copper, zinc, and aluminum memorial alloy energy consumer, the skeleton construction Natural Frequency of Vibration obviously descends, amplitude damping factor η is minimum to be 0.112698, and do not load onto composite rare earth, copper, zinc, and aluminum memorial alloy energy consumer amplitude damping factor η minimum still is 0.866540, sees Table 2.Obviously after installing composite rare earth, copper, zinc, and aluminum memorial alloy energy consumer, because the vibrational frequency of framework declines to a great extent, make framework avoid resonance thereby in engineering is used, utilize this characteristic can change the structural vibrations frequency.When structure when externally the cyclic stress effect down resonance takes place, the amplitude and the energy maximum of vibration, the destruction that structure is born are also maximum, if can reduce the natural frequency of structure, make it away from resonant frequency, then make structure be difficult for take place tired and help the life-time service of structure.The framework of loading onto behind the composite rare earth, copper, zinc, and aluminum memorial alloy energy consumer has satisfied this requirement.
The vibration contrast of two frameworks after table 1 is unkitted the memorial alloy energy consumer and loads onto the memorial alloy energy consumer
Claims (3)
1, a kind of composite rare earth copper-zinc-aluminum shape memory alloy that is used to make dissipation of energy device of engineering structural framework is characterized by: its composition is Zn 23.4%-25%, Al 3.4%-3.5%, and Ni 0.9%-1.0%, surplus is a copper; In the smelting process, adding composition is La 45.5%, and Ce 44.9%, and Pr 7.7%, and the compound rare-earth fining agent 0.06%-0.09% of Nd 1.9% pours into the ingot casting that diameter is φ 80 * 150mm after the melting; Anneal is to be heated to 820 ℃ of insulations furnace cooling after 24 hours, removes the dezincify layer of surperficial 2-3mm then, forges the thick sheet material to 11mm again, is rolled into the 3mm thin plate at last; Heat-treat then, its concrete technology is: 850 ℃ of insulations are quenched after 30 minutes in the room temperature oil, carry out being incubated 15 minutes two-stage ageing treatment in the insulation 30 minutes and 50 ℃ of water in 150 ℃ of oil again.
2, the composite rare earth copper-zinc-aluminum shape memory alloy that is used to make dissipation of energy device of engineering structural framework according to claim 1, it is characterized by: composition is: Zn 24.12%, and Al 3.46%, and Ni 0.98%, surplus is a copper, to guarantee that obtaining alloy phase height Af is-10 ℃.
3, the composite rare earth copper-zinc-aluminum shape memory alloy that is used to make dissipation of energy device of engineering structural framework according to claim 1 is characterized by: compound rare-earth fining agent addition is 0.07%.
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Families Citing this family (12)
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| CN100529147C (en) * | 2007-10-24 | 2009-08-19 | 江阴鑫裕装潢材料有限公司 | Ultra-elastic memory heat treatment method for copper-base shape memory alloy obtained by thermal continuous casting |
| CN101886187B (en) * | 2010-07-14 | 2011-11-09 | 南京信息工程大学 | Shape memory copper alloy and preparation method thereof |
| CN102021465B (en) * | 2010-10-15 | 2012-04-25 | 镇江忆诺唯记忆合金有限公司 | Composite rare earth addictive for preventing Mn in CuAlMn memory alloy from volatilizing |
| CN103255314A (en) * | 2013-06-05 | 2013-08-21 | 镇江忆诺唯记忆合金有限公司 | Copper-zinc-aluminum shape memory alloy with improved frictional wear resistance |
| CN103276240A (en) * | 2013-06-06 | 2013-09-04 | 镇江忆诺唯记忆合金有限公司 | Copper-zinc-aluminium-shaped memory alloy for raising thermal fatigue performance |
| CN104233131A (en) * | 2013-06-09 | 2014-12-24 | 镇江忆诺唯记忆合金有限公司 | Heat treatment process for improving friction and wear properties of copper-zinc-aluminum memory alloy |
| CN104232981B (en) * | 2013-06-13 | 2016-04-27 | 镇江忆诺唯记忆合金有限公司 | Improve the method for CuZnAl shape memory alloy rolling wearability under alkaline medium |
| CN104233132A (en) * | 2013-06-13 | 2014-12-24 | 镇江忆诺唯记忆合金有限公司 | Heat treatment technology for improving room-temperature mechanical properties of copper-zinc-aluminium shape memory alloy |
| CN104342577A (en) * | 2013-08-04 | 2015-02-11 | 镇江忆诺唯记忆合金有限公司 | Copper zinc aluminum memory alloy capable of improving hardness stability under hot and cold cycling |
| CN104342593A (en) * | 2013-08-04 | 2015-02-11 | 镇江忆诺唯记忆合金有限公司 | Copper-zinc-aluminum memory alloy for improving phase transformation point stability under hot and cold cycles |
| KR101965345B1 (en) * | 2018-12-19 | 2019-04-03 | 주식회사 풍산 | Copper alloy for terminal and connector having excellent bending workability and method for manufacturing the same |
| CN110951989B (en) * | 2019-12-25 | 2020-11-06 | 鸣浩高新材料科技(江苏盐城)有限公司 | High-strength and high-toughness copper-zinc-aluminum shape memory alloy and preparation method thereof |
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Non-Patent Citations (2)
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| 热处理工艺对铜锌铝形状记忆合金组织与滚动磨损性能的影响. 徐桂芳，司乃潮，李玉祥.兵器材料科学与工程，第27卷第4期. 2004 |
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