CN102851543A - Hyperelastic memory alloy - Google Patents
Hyperelastic memory alloy Download PDFInfo
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- CN102851543A CN102851543A CN2012103424961A CN201210342496A CN102851543A CN 102851543 A CN102851543 A CN 102851543A CN 2012103424961 A CN2012103424961 A CN 2012103424961A CN 201210342496 A CN201210342496 A CN 201210342496A CN 102851543 A CN102851543 A CN 102851543A
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Abstract
The invention relates to a hyperelastic memory alloy which comprises the following components in percentage by atom: 45-50% of nickel, 5-20% of iron, 25-30% of titanium and 10-15% of cobalt. The alloy material according to the technical scheme has hyperelasticity after narrow hysteresis, and can maintain the shape memory effect.
Description
Technical field
The invention belongs to functional technical field of alloy material, refer to especially a kind of super bullet memory alloy.
Background technology
Superelastic alloy is widely used in the fields such as aviation, machinery, precision instrument and medical treatment because it has higher recovered elastic deformation.The superelastic alloy that the most often uses at present is Ti-Ni alloy, there is thermo-elastic martensite in the Ti-Ni alloy, its transformation temperature changes within the specific limits with the alloy ingredient difference, because the nickel titante series alloy not only has peculiar shape memory effect, also has preferably super-elasticity behavior, but its super-elasticity behavior belongs to the super-elasticity behavior of wide transformation hysteresis, so in-fighting is high.
Adopt cobalt Substitute For Partial nickel among China patent publication No. CN102337424 and form a kind of nickel ferro-cobalt gallium alloy material, think to obtain preferably super-elasticity behavior by the martensitic transformation temperature that can change and control alloy material.Analyze by the alloy to this technical scheme, the elastic performance of this alloy is better than common Ti-Ni alloy really, martensite also corresponding minimizing is a lot, but this alloy also has certain defective, has super-elasticity although Here it is, but the shape memory effect for former Ti-Ni alloy greatly reduces, even shape memory effect is zero in some component.Therefore need to develop a kind of alloy material that narrow hysteresis elastic performance can keep again shape memory effect that namely has.
Summary of the invention
The objective of the invention is by a kind of technical scheme is provided, the alloy material of this technical scheme not only has the alloy material that narrow hysteresis elastic performance can keep again shape memory effect.
The present invention is achieved by the following technical solutions:
A kind of super bullet memory alloy, it is nickel 45-50at% that each of described alloy material forms by atomic percentage conc, iron 5-20at%, titanium 25-30at%, cobalt 10-15at%.
As further improvement, it is nickel 50at% that each of described alloy material forms by atomic percentage conc, iron 5at%, titanium 30at%, cobalt 15at%.
As further improvement, it is nickel 45at% that each of described alloy material forms by atomic percentage conc, iron 20at%, titanium 25at%, cobalt 10at%.
The invention has the beneficial effects as follows:
1, the alloy material of the technical program not only has the alloy material that narrow hysteresis elastic performance can keep again shape memory effect.
2, the production technique of the technical program is simple, is easy to suitability for industrialized production.
Embodiment
Below by embodiment technical scheme of the present invention is elaborated.
A kind of super bullet memory alloy material, it is nickel 45-50at% that each of described alloy material forms by atomic percentage conc, iron 5-20at%, titanium 25-30at%, cobalt 10-15at%.
As further improvement, it is nickel 50at% that each of described alloy material forms by atomic percentage conc, iron 5at%, titanium 30at%, cobalt 15at%.
As further improvement, it is nickel 45at% that each of described alloy material forms by atomic percentage conc, iron 20at%, titanium 25at%, cobalt 10at%.
Described a kind of superelastic alloy material preparation method specifically may further comprise the steps:
1), choose the nickel of purity 〉=99.9%, purity 〉=99.99% cobalt, the iron of purity 〉=99.9%, the titanium of purity 〉=99.9% is prepared burden above-mentioned materials according to atomic percentage conc, then put into the non-consumable vacuum arc melting furnace and be evacuated to 2.0 * 10
-4Pa is filled with argon gas again, inhales casting with mold cools down after the melt back and obtains alloy blank;
2), with 1) in the alloy blank sealing that obtains, be evacuated to 5.0 * 10
-5Pa 1000 ℃ of lower insulations 72 hours, then is cooled to room temperature and obtains the superelastic alloy material.
Described cooling to be at the uniform velocity being cooled to the master, rate of cooling remain on 2.5-5 ℃ per 15 minutes, this rate of cooling will remain to the blank drop in temperature to 450-500 ℃.The result who does like this is can keep the interior crystalline structure of alloy even, and each particle that forms in unit volume is roughly the same, reduces the in-fighting of energy.
Embodiment 1
Each composition of choosing described alloy material is nickel 50at% by atomic percentage conc, iron 5at%, titanium 30at%, cobalt 15at%.
1), choose the nickel of purity 〉=99.9%, purity 〉=99.99% cobalt, the iron of purity 〉=99.9%, the titanium of purity 〉=99.9% is prepared burden above-mentioned materials according to atomic percentage conc, then put into the non-consumable vacuum arc melting furnace and be evacuated to 2.0 * 10
-4Pa is filled with argon gas again, inhales casting with mold cools down after the melt back and obtains alloy blank;
2), with 1) in the alloy blank sealing that obtains, be evacuated to 5.0 * 10
-5Pa 1000 ℃ of lower insulations 72 hours, then is cooled to room temperature and obtains the superelastic alloy material.
Described cooling to be at the uniform velocity being cooled to the master, rate of cooling remain on 3.5 ℃ per 15 minutes, this rate of cooling will remain to blank drop in temperature to 450 ℃.
Therefore the vicissitudinous final temp that the atomic percentage conc of each composition material and rate of cooling is in process of production arranged and keep rate of cooling only forms the variation other side by material identical in embodiment 1-3 in following embodiment; In embodiment 4-6 except each material form change, rate of cooling and keep the final temp of rate of cooling to change with embodiment 1-3 but the final temp of rate of cooling in embodiment 4-6 and maintenance rate of cooling is identical.
Embodiment 2
Each composition of choosing described alloy material is nickel 50at% by atomic percentage conc, iron 10at%, titanium 30at%, cobalt 10at%.
Embodiment 3
Each composition of choosing described alloy material is nickel 45at% by atomic percentage conc, iron 20at%, titanium 25at%, cobalt 10at%.
Embodiment 4
Each composition of choosing described alloy material is nickel 48at% by atomic percentage conc, iron 10at%, titanium 30at%, cobalt 12at%.Rate of cooling remain on 5 ℃ per 15 minutes, this rate of cooling will remain to blank drop in temperature to 500 ℃.
Embodiment 5
Each composition of choosing described alloy material is nickel 50at% by atomic percentage conc, iron 15at%, titanium 25at%, cobalt 10at%.Rate of cooling remain on 5 ℃ per 15 minutes, this rate of cooling will remain to blank drop in temperature to 500 ℃.
Embodiment 6
Each composition of choosing described alloy material is nickel 50at% by atomic percentage conc, iron 10at%, titanium 25at%, cobalt 15at%.Rate of cooling remain on 5 ℃ per 15 minutes, this rate of cooling will remain to blank drop in temperature to 500 ℃.
The performance of each component alloy of embodiment 1-6 sees Table 1
Table 1
| Embodiment | Recoverable strain a | Maximum strain hysteresis b | b/a |
| Embodiment 1 | 7.62 | 3.25 | 0.427 |
| Embodiment 2 | 6.84 | 2.97 | 0.434 |
| Embodiment 3 | 6.78 | 3.06 | 0.451 |
| Embodiment 4 | 5.32 | 4.03 | 0.758 |
| Embodiment 5 | 4.13 | 2.14 | 0.518 |
| Embodiment 6 | 5.16 | 2.23 | 0.432 |
The present invention includes but be not limited to the present embodiment, every being equal to of carrying out under rule of the present invention, replace or local improvement all should be considered as protection scope of the present invention.
Claims (3)
1. one kind surpasses bullet memory alloy, and it is characterized in that: it is nickel 45-50at% that each of described alloy material forms by atomic percentage conc, iron 5-20at%, titanium 25-30at%, cobalt 10-15at%.
2. described super bullet memory alloy material according to claim 1, it is characterized in that: it is nickel 50at% that each of described alloy material forms by atomic percentage conc, iron 5at%, titanium 30at%, cobalt 15at%.
3. described super bullet memory alloy according to claim 1, it is characterized in that: it is nickel 45at% that each of described alloy material forms by atomic percentage conc, iron 20at%, titanium 25at%, cobalt 10at%.
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| CN2012103424961A CN102851543A (en) | 2012-09-14 | 2012-09-14 | Hyperelastic memory alloy |
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| CN2012103424961A CN102851543A (en) | 2012-09-14 | 2012-09-14 | Hyperelastic memory alloy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313396A (en) * | 2014-10-14 | 2015-01-28 | 包惠芳 | Elastic alloy material and preparation method thereof |
| CN104357689A (en) * | 2014-10-14 | 2015-02-18 | 熊荣鑫 | Preparation method of elastic alloy material |
| CN104388803A (en) * | 2014-10-14 | 2015-03-04 | 包惠芳 | Elastic alloy material |
| CN112538582A (en) * | 2020-11-19 | 2021-03-23 | 有研工程技术研究院有限公司 | Blank for memory alloy pipe joint and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851548A (en) * | 2012-09-05 | 2013-01-02 | 徐琼 | Hyperelastic alloy |
| CN102864341A (en) * | 2012-09-05 | 2013-01-09 | 徐琼 | Super-elastic alloy material and preparation method thereof |
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- 2012-09-14 CN CN2012103424961A patent/CN102851543A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851548A (en) * | 2012-09-05 | 2013-01-02 | 徐琼 | Hyperelastic alloy |
| CN102864341A (en) * | 2012-09-05 | 2013-01-09 | 徐琼 | Super-elastic alloy material and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| MI-SEON CHOI ET AL.: "《Stability of the B2-type structure and R-phase transformation behavior of Fe or Co doped Ti–Ni alloys》", 《MATERIALS SCIENCE AND ENGINEERING A》, no. 438440, 31 December 2006 (2006-12-31) * |
| V.A.CHERNENKO ET AL.: "《Internal Friction in Fe-Co-Ni-Ti Shape Memory Alloys》", 《JOURNAL DE PHYSIQUE IV》, vol. 5, 31 December 1995 (1995-12-31), pages 481 - 483 * |
| 刘曼倩等: "《热处理对Ti-Ni-Co超弹性合金变形行为的影响》", 《金属热处理》, vol. 35, no. 10, 31 October 2010 (2010-10-31), pages 48 - 51 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313396A (en) * | 2014-10-14 | 2015-01-28 | 包惠芳 | Elastic alloy material and preparation method thereof |
| CN104357689A (en) * | 2014-10-14 | 2015-02-18 | 熊荣鑫 | Preparation method of elastic alloy material |
| CN104388803A (en) * | 2014-10-14 | 2015-03-04 | 包惠芳 | Elastic alloy material |
| CN112538582A (en) * | 2020-11-19 | 2021-03-23 | 有研工程技术研究院有限公司 | Blank for memory alloy pipe joint and preparation method |
| CN112538582B (en) * | 2020-11-19 | 2021-11-05 | 有研工程技术研究院有限公司 | Blank for memory alloy pipe joint and preparation method |
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Application publication date: 20130102 |