CN102876925A - Alloy material with elastic property - Google Patents
Alloy material with elastic property Download PDFInfo
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- CN102876925A CN102876925A CN2012103273571A CN201210327357A CN102876925A CN 102876925 A CN102876925 A CN 102876925A CN 2012103273571 A CN2012103273571 A CN 2012103273571A CN 201210327357 A CN201210327357 A CN 201210327357A CN 102876925 A CN102876925 A CN 102876925A
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Abstract
The invention relates to an alloy material with elastic property. The alloy material comprises the following components by atom: 42-50 percent of nickel, 0-10 percent of iron, 10-15 percent of titanium, 10-15 percent of cobalt and 15-20 percent of gallium. By adopting the technical scheme, the alloy material provided by the invention has narrow hysteresis and superelasticity and can further maintain a shape memory effect.
Description
Technical field
The invention belongs to functional technical field of alloy material, refer to especially a kind of alloy material with elastic performance.
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 alloy material with elastic performance, it is nickel 42-50at% that each of described alloy material forms by atomic percentage conc, iron 0-10at%, titanium 10-15at%, cobalt 10-15at%, gallium 15-20at%.
As further improvement, it is nickel 45at% that each of described alloy material forms by atomic percentage conc, iron 10at%, titanium 15at%, cobalt 10at%, gallium 20at%.
As further improvement, it is nickel 45at% that each of described alloy material forms by atomic percentage conc, iron 10at%, titanium 15at%, cobalt 15at%, gallium 15at%.
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 alloy material with elastic performance, it is nickel 42-50at% that each of described alloy material forms by atomic percentage conc, iron 0-10at%, titanium 10-15at%, cobalt 10-15at%, gallium 15-20at%.
As further improvement, it is nickel 45at% that each of described alloy material forms by atomic percentage conc, iron 10at%, titanium 15at%, cobalt 10at%, gallium 20at%.
As further improvement, it is nickel 45at% that each of described alloy material forms by atomic percentage conc, iron 10at%, titanium 15at%, cobalt 10at%, gallium 20at%.
The preparation method of described a kind of elastic alloy material specifically may further comprise the steps:
1), chooses the nickel of purity 〉=99.9%, purity 〉=99.99% cobalt, the iron of purity 〉=99.9%, the titanium of purity 〉=99.9%, the gallium of purity 〉=99.99%; Above-mentioned materials is prepared burden 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 45at% by atomic percentage conc, iron 10at%, titanium 15at%, cobalt 10at%, gallium 20at%.
1), chooses the nickel of purity 〉=99.9%, purity 〉=99.99% cobalt, the iron of purity 〉=99.9%, the titanium of purity 〉=99.9%, the gallium of purity 〉=99.99%; Above-mentioned materials is prepared burden 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 10at%, cobalt 10at%, gallium 20at%.
Embodiment 3
Each composition of choosing described alloy material is nickel 42at% by atomic percentage conc, iron 10at%, titanium 13at%, cobalt 15at%, gallium 20at%.
Embodiment 4
Each composition of choosing described alloy material is nickel 48at% by atomic percentage conc, iron 10at%, titanium 12at%, cobalt 12at%, gallium 18at%.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 10at%, titanium 15at%, cobalt 10at%, gallium 15at%.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 43at% by atomic percentage conc, iron 7at%, titanium 15at%, cobalt 15at%, gallium 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. alloy material with elastic performance is characterized in that: it is nickel 42-50at% that each of described alloy material forms by atomic percentage conc, iron 0-10at%, titanium 10-15at%, cobalt 10-15at%, gallium 15-20at%.
2. described alloy material with elastic performance 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 10at%, titanium 15at%, cobalt 10at%, gallium 20at%.
3. described alloy material with elastic performance 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 10at%, titanium 15at%, cobalt 15at%, gallium 15at%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103273571A CN102876925A (en) | 2012-09-05 | 2012-09-05 | Alloy material with elastic property |
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| CN2012103273571A CN102876925A (en) | 2012-09-05 | 2012-09-05 | Alloy material with elastic property |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135018A (en) * | 2007-10-10 | 2008-03-05 | 厦门大学 | Nickel manganese cobalt gallium high-temperature shape memory alloy and method for making same |
| US20110277568A1 (en) * | 2009-11-02 | 2011-11-17 | Saes Smart Materials | Ni-Ti SEMI-FINISHED PRODUCTS AND RELATED METHODS |
| CN102337424A (en) * | 2011-09-16 | 2012-02-01 | 北京理工大学 | Nickel-cobalt-iron-gallium hyperelastic alloy material and preparation method thereof |
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- 2012-09-05 CN CN2012103273571A patent/CN102876925A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135018A (en) * | 2007-10-10 | 2008-03-05 | 厦门大学 | Nickel manganese cobalt gallium high-temperature shape memory alloy and method for making same |
| US20110277568A1 (en) * | 2009-11-02 | 2011-11-17 | Saes Smart Materials | Ni-Ti SEMI-FINISHED PRODUCTS AND RELATED METHODS |
| CN102337424A (en) * | 2011-09-16 | 2012-02-01 | 北京理工大学 | Nickel-cobalt-iron-gallium hyperelastic alloy material and preparation method thereof |
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Application publication date: 20130116 |