CN104388802A - Elastic alloy and its preparation method - Google Patents
Elastic alloy and its preparation method Download PDFInfo
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- CN104388802A CN104388802A CN201410543368.2A CN201410543368A CN104388802A CN 104388802 A CN104388802 A CN 104388802A CN 201410543368 A CN201410543368 A CN 201410543368A CN 104388802 A CN104388802 A CN 104388802A
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Abstract
The invention relates to an elastic alloy and its preparation method. The alloy comprises 45-55at% of nickel, 0-10at% of iron, 25-35at% of titanium, 5-15at% of cobalt, 1-3at% of copper, 3-5at% of tungsten and 1-3at% of nitrogen. The alloy material obtained through the above technical scheme has narrow hysteresis hyper elasticity and has a shape memory maintaining effect.
Description
Technical field
The invention belongs to functional technical field of alloy material, refer to a kind of elastic alloy and preparation method thereof especially.
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 the most often used is at present Ti-Ni alloy, thermo-elastic martensite is there is in Ti-Ni alloy, its transformation temperature changes within the specific limits with alloy ingredient difference, because nickel titante series alloy not only has peculiar shape memory effect, also there is good super-elasticity behavior, but its super-elasticity behavior belongs to the super-elasticity behavior of wide transformation hysteresis, and therefore in-fighting is high.
Adopt cobalt Substitute For Partial nickel in China patent publication No. CN102337424 and form a kind of nickel ferro-cobalt gallium alloy material, thinking and can obtain good super-elasticity behavior by the martensitic transformation temperature that can change and control alloy material.By analyzing the alloy of 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 defect, although Here it is, there is super-elasticity, but greatly reduce for the shape memory effect of former Ti-Ni alloy, even in some component, shape memory effect is zero.Therefore need to develop a kind of alloy material that not only there is narrow delayed elastic performance but also shape memory effect can be kept.
Summary of the invention
The object of the invention is by providing a kind of technical scheme, the alloy material of this technical scheme not only has the alloy material that narrow Delayed elastic can keep again shape memory effect.
The present invention is achieved by the following technical solutions:
A kind of elastic alloy, each composition of described alloy material is nickel 45-55at% by atomic percentage conc, iron 0-10at%, titanium 25-35at%, cobalt 5-15at%, copper 1-3at%, tungsten 3-5at% and nitrogen 1-3at%.
A preparation method for elastic alloy, specifically comprises the following steps:
1), choose the nickel of purity>=99.9%, cobalt, iron, titanium, copper, tungsten and nitrogen, prepare burden above-mentioned materials according to atomic percentage conc, then puts into smelting furnace and be evacuated to 2.0 × 10
-4pa, then be filled with argon gas, after melt back; Described melt back refers at least twice melting, and except last melting, to heat up again after 15-30 DEG C/min of cooling 200-300 DEG C after each melting; Inhale casting by mold cools down and obtain alloy blank
2), by 1) in obtain alloy blank sealing, be evacuated to 5.0 × 10
-5pa, is incubated 72 hours, is then cooled to room temperature and obtains Super elastic alloy material at 1000 DEG C; Described cooling to be at the uniform velocity cooled to master, rate of cooling remain on 2.5-5 DEG C every 15 minutes, this rate of cooling will remain to after slab temperature drops to 450-500 DEG C, then naturally cools to normal temperature.
What described smelting furnace adopted is non-consumable vacuum arc melting furnace.
Described batching is, respectively forming by atomic percentage conc is nickel 45-55at%, iron 0-10at%, titanium 25-35at%, cobalt 5-15at%, copper 1-3at%, tungsten 3-5at% and nitrogen 1-3at%.
The invention has the beneficial effects as follows:
1, the alloy material of the technical program not only has the alloy material that narrow delayed elastic performance can keep again shape memory effect.
2, the technical program refers at least twice melting by described melt back, and except last melting, to heat up again after 15-30 DEG C/min of cooling 200-300 DEG C after each melting, make to organize interior crystal arrangement even, coefficient of elasticity difference is little, improves the even of the coefficient of elasticity of elastic alloy.
Embodiment
Below by way of embodiment, technical scheme of the present invention is described in detail.
A kind of elastic alloy, each composition of described alloy material is nickel 45-55at% by atomic percentage conc, iron 0-10at%, titanium 25-35at%, cobalt 5-15at%, copper 1-3at%, tungsten 3-5at% and nitrogen 1-3at%.
A preparation method for elastic alloy, specifically comprises the following steps:
1), the nickel of purity >=99.9%, cobalt, iron is chosen, titanium, copper, tungsten and nitrogen, above-mentioned materials is prepared burden according to atomic percentage conc, described batching is, respectively forming by atomic percentage conc is nickel 45-55at%, iron 0-10at%, titanium 25-35at%, cobalt 5-15at%, copper 1-3at%, tungsten 3-5at% and nitrogen 1-3at%.
Then put into smelting furnace and be evacuated to 2.0 × 10
-4pa, then be filled with argon gas, after melt back; Described melt back refers at least twice melting, and except last melting, to heat up again after 15-30 DEG C/min of cooling 200-300 DEG C after each melting; Inhale casting by mold cools down and obtain alloy blank
2), by 1) in obtain alloy blank sealing, be evacuated to 5.0 × 10
-5pa, is incubated 72 hours, is then cooled to room temperature and obtains Super elastic alloy material at 1000 DEG C; Described cooling to be at the uniform velocity cooled to master, rate of cooling remain on 2.5-5 DEG C every 15 minutes, this rate of cooling will remain to after slab temperature drops to 450-500 DEG C, then naturally cools to normal temperature.
What described smelting furnace adopted is non-consumable vacuum arc melting furnace.
The result done like this is can keep crystalline structure in alloy even, and the particle respectively formed in unit volume is roughly the same, reduces the in-fighting of energy.
In following embodiment, difference part is only at the composition of elastic alloy, and preparation method is identical, therefore, below in an example, the composition of each elastic alloy is only described, preparation method is repeat specification no longer.
Embodiment 1
A kind of elastic alloy, each composition of described alloy material is nickel 45at% by atomic percentage conc, iron 10at%, titanium 35at%, cobalt 5at%, copper 1at%, tungsten 3at% and nitrogen 1at%.
Embodiment 2
A kind of elastic alloy, each composition of described alloy material is nickel 50at% by atomic percentage conc, iron 5at%, titanium 24at%, cobalt 10at%, copper 3at%, tungsten 5at% and nitrogen 3at%.
Embodiment 3
A kind of elastic alloy, each composition of described alloy material is nickel 45at% by atomic percentage conc, iron 10at%, titanium 22at%, cobalt 15at%, copper 2at%, tungsten 4at% and nitrogen 2at%.
The present invention includes but be not limited to the present embodiment, every equivalent replacement of carrying out under rule of the present invention or local improvement all should be considered as protection scope of the present invention.
Claims (4)
1. an elastic alloy, is characterized in that: each composition of described alloy material is nickel 45-55at% by atomic percentage conc, iron 0-10at%, titanium 25-35at%, cobalt 5-15at%, copper 1-3at%, tungsten 3-5at% and nitrogen 1-3at%.
2. a preparation method for elastic alloy, is characterized in that: specifically comprise the following steps:
1), choose the nickel of purity>=99.9%, cobalt, iron, titanium, copper, tungsten and nitrogen, prepare burden above-mentioned materials according to atomic percentage conc, then puts into smelting furnace and be evacuated to 2.0 × 10
-4pa, then be filled with argon gas, after melt back; Described melt back refers at least twice melting, and except last melting, to heat up again after 15-30 DEG C/min of cooling 200-300 DEG C after each melting; Inhale casting by mold cools down and obtain alloy blank
2), by 1) in obtain alloy blank sealing, be evacuated to 5.0 × 10
-5pa, is incubated 72 hours, is then cooled to room temperature and obtains Super elastic alloy material at 1000 DEG C; Described cooling to be at the uniform velocity cooled to master, rate of cooling remain on 2.5-5 DEG C every 15 minutes, this rate of cooling will remain to after slab temperature drops to 450-500 DEG C, then naturally cools to normal temperature.
3. the preparation method of elastic alloy according to claim 2, is characterized in that: what described smelting furnace adopted is non-consumable vacuum arc melting furnace.
4. the preparation method of elastic alloy according to claim 2, it is characterized in that: described batching is, respectively forming by atomic percentage conc is nickel 45-55at%, iron 0-10at%, titanium 25-35at%, cobalt 5-15at%, copper 1-3at%, tungsten 3-5at% and nitrogen 1-3at%.
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| CN201410543368.2A CN104388802A (en) | 2014-10-14 | 2014-10-14 | Elastic alloy and its preparation method |
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| CN201410543368.2A CN104388802A (en) | 2014-10-14 | 2014-10-14 | Elastic alloy and its preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104342568A (en) * | 2014-10-14 | 2015-02-11 | 杨雯雯 | Preparation method of elastic alloy |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5026487B1 (en) * | 1968-02-02 | 1975-09-01 | ||
| CN102864360A (en) * | 2012-09-14 | 2013-01-09 | 虞海盈 | Super elastic alloy material and preparation method thereof |
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2014
- 2014-10-14 CN CN201410543368.2A patent/CN104388802A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5026487B1 (en) * | 1968-02-02 | 1975-09-01 | ||
| CN102864360A (en) * | 2012-09-14 | 2013-01-09 | 虞海盈 | Super elastic alloy material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104342568A (en) * | 2014-10-14 | 2015-02-11 | 杨雯雯 | Preparation method of elastic alloy |
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Application publication date: 20150304 |