CN101386966A - Method for processing NiTiCu shape memory alloy wire materials - Google Patents
Method for processing NiTiCu shape memory alloy wire materials Download PDFInfo
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- CN101386966A CN101386966A CNA200810156393XA CN200810156393A CN101386966A CN 101386966 A CN101386966 A CN 101386966A CN A200810156393X A CNA200810156393X A CN A200810156393XA CN 200810156393 A CN200810156393 A CN 200810156393A CN 101386966 A CN101386966 A CN 101386966A
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Abstract
The invention relates to a method for processing a NiTiCu shape memory alloy slab, which is characterized in that after removal of an oxide coating, an NiTiCu shape memory alloy blank is forged, wherein the forging temperature is between 920 and 750 DEG C, and the final forging dimension is 40mmx40mmx500mm (thickness x width x length); the rolling temperature is between 920 and 700 DEG C, and annealing treatment is required to be performed during the rolling process, wherein the annealing temperature is between 650 and 800 DEG C; and the final dimension after rolling is 1 to 3 millimeters in the thickness and 150 millimeters in the width, and the length is not limited.
Description
Technical field
The present invention relates to the shape memory alloy technical field, particularly a kind of working method of NiTiCu shape memory alloy sheet material.
Background technology
In the NiTi shape memory alloy, add copper, alloy phase change is lagged behind obviously narrow down, and can suppress the susceptibility of transformation temperature composition.Reference [1] (F.J.Gil, E.Solano, J.
E.Engel, A.Mendoza, J.A.Planell.Microstructural, mechanical and citotoxicity evaluation of differentNiTi and NiTiCu shape memory alloys.Journal of Materials Science:Materials inMedicine, November.15-11,2004:1181 ~ 1185.) point out, compare with NiTi binary shape memorial alloy, the NiTiCu shape memory alloy generally is used for response ratio occasion more rapidly in temperature field is fit to be used as the temperature-sensitive driving element.Reference [2] (D.A.Miller, D.C.Lagoudas.Thermomechanical characterization of NiTiCu and NiTi SMAactuators:influence of plastic strains.Smart Materials and Structures, October.9-5,2000:640 ~ 645.) NiTiCu has been carried out deep research as the thermo-mechanical property of driving element, he adopts four kinds of different loading regimes (1) Ovshinsky figure elasticity-plasticity to load; (2) the stress-induced martensite attitude loads; (3) martensite attitude elasticity-mechanical twin-plasticity loads; (4) heat under the constant stress is brought out phase transformation.Discover that NiTiCu has round trip dependent variable preferably under the third situation.
The interpolation of copper makes the NiTiCu shape memory alloy have the new feature that is different from the NiTi shape memory alloy, the adding of Cu reduces much NiTi base marmem heat stagnation, martensitic transformation temperature is more stable, has stable stress-strain super-elasticity curve, low martensite yield strength, therefore, make the NiTiCu shape memory alloy be with a wide range of applications in fields such as biomedical and engineerings, particularly utilize the characteristics of the narrow hysteresis of NiTiCu, make the temperature field response ratio more rapidly the temperature-sensitive driving element its significance is arranged, it is maximum that the NiTiCu shape memory alloy is used on biomedical engineering and the temperature-sensitive driving element is exactly sheet material.
The present invention is directed to this problem, developed a kind of working method of NiTiCu shape memory alloy sheet material.
Summary of the invention
Purpose of the present invention provides a kind of working method of NiTiCu shape memory alloy sheet material.
The concrete technical scheme of the present invention is the NiTiCu blank of shape memory alloy that has prepared to be carried out deep processing, to satisfy the demand in fields such as engineering.It is characterized in that: with NiTiCu blank of shape memory alloy scale removal, forge, forging temperature is 920 ℃-750 ℃, and forging final size is thickness 40mm * width 40mm * length 500mm; Rolling temperature is 920 ℃-700 ℃, will carry out anneal in the operation of rolling, and the temperature of anneal is 650 ℃-800 ℃, and the final size after rolling is: thickness 1-3mm, and width 130-160mm, length is not limit.
After adopting the inventive method to obtain NiTiCu shape memory alloy sheet material, can require to be used for fields such as engineering according to reality, its product shows good shape memory effect (recovery rate).
Description of drawings
Fig. 1 NiTiCu shape memory alloy is made the round trip reminiscence rate behind the sheet material
As seen from Figure 1, adopt the prepared NiTiCu shape memory alloy sheet material that goes out of the inventive method, have good shape memory effect (recovery rate).
Embodiment
Embodiment 1
With NiTiCu blank of shape memory alloy scale removal, forge, forging the beginning temperature is 920 ℃, final forging temperature is 750 ℃, and forging final size is thickness 40mm * width 40mm * length 500mm, and forged homogeneous microstructure density is good under this temperature, do not ftracture non-scale.
The plate rolling process is as follows: thickness * width
Thickness 40mm * width 40mm-thickness 30mm * width 55mm rolling temperature is 920 ℃-890 ℃;
Thickness 30mm * width 55mm-thickness 25mm * width 70mm rolling temperature is 890 ℃-860 ℃, 800 ℃-760 ℃ of anneal;
Thickness 25mm * width 70mm-thickness 20mm * width 80mm rolling temperature is 860 ℃-830 ℃;
Thickness 20mm * width 80mm-thickness 15mm * width 100mm rolling temperature is 830 ℃-800 ℃, 760 ℃-720 ℃ of anneal;
Thickness 15mm * width 100mm-thickness 10mm * width 115mm rolling temperature is 800 ℃-770 ℃;
Thickness 10mm * width 115mm-thickness 6mm * width 135mm rolling temperature is 770 ℃-740 ℃, 720 ℃-680 ℃ of anneal;
Thickness 6mm * width 135mm-thickness 3mm * width 150mm rolling temperature is 740 ℃-720 ℃;
Thickness 3mm * width 150mm-thickness 1mm * width 150mm rolling temperature is 720 ℃-700 ℃, 680 ℃-650 ℃ of anneal;
Final size after rolling is thickness 1-3mm * width 150mm, and length is not limit.
After adopting the inventive method to obtain NiTiCu shape memory alloy sheet material, its product mechanical property is good, σ
b=872.6MPa, σ
0.2=514.8MPa, δ=14.3% shows good double-pass memory effect (recovery rate), sees Fig. 1.
Claims (1)
1, a kind of working method of NiTiCu shape memory alloy sheet material, it is characterized in that: with NiTiCu blank of shape memory alloy scale removal, forge, forging temperature is 920 ℃-750 ℃, and forging final size is thickness 40mm * width 40mm * length 500mm; Rolling temperature is 920 ℃-700 ℃, will carry out anneal in the operation of rolling, and the temperature of anneal is 650 ℃-800 ℃, and the final size after rolling is: thickness 1-3mm, and width 150mm, length is not limit.
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CNA200810156393XA CN101386966A (en) | 2008-10-09 | 2008-10-09 | Method for processing NiTiCu shape memory alloy wire materials |
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CNA200810156393XA CN101386966A (en) | 2008-10-09 | 2008-10-09 | Method for processing NiTiCu shape memory alloy wire materials |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102728647A (en) * | 2012-06-25 | 2012-10-17 | 镇江忆诺唯记忆合金有限公司 | Preparation method of nickel titanium copper memory alloy sheet |
CN108070773A (en) * | 2017-12-18 | 2018-05-25 | 西安赛特思迈钛业有限公司 | A kind of Ni-based hexa-atomic memorial alloy of medical titanium |
CN115519847A (en) * | 2022-10-10 | 2022-12-27 | 太原理工大学 | Metal composite thin strip with two-way shape memory effect and forming method thereof |
-
2008
- 2008-10-09 CN CNA200810156393XA patent/CN101386966A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102728647A (en) * | 2012-06-25 | 2012-10-17 | 镇江忆诺唯记忆合金有限公司 | Preparation method of nickel titanium copper memory alloy sheet |
CN108070773A (en) * | 2017-12-18 | 2018-05-25 | 西安赛特思迈钛业有限公司 | A kind of Ni-based hexa-atomic memorial alloy of medical titanium |
CN115519847A (en) * | 2022-10-10 | 2022-12-27 | 太原理工大学 | Metal composite thin strip with two-way shape memory effect and forming method thereof |
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