CN104946956A - TiNiCuNb shape memory alloy and preparation method thereof - Google Patents

TiNiCuNb shape memory alloy and preparation method thereof Download PDF

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Publication number
CN104946956A
CN104946956A CN201510312642.XA CN201510312642A CN104946956A CN 104946956 A CN104946956 A CN 104946956A CN 201510312642 A CN201510312642 A CN 201510312642A CN 104946956 A CN104946956 A CN 104946956A
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shape memory
memory alloy
tinicunb
alloy
preparation
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佟运祥
王广超
胡阔鹏
郑玉峰
李莉
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Harbin Engineering University
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Harbin Engineering University
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Abstract

The invention provides a TiNiCuNb shape memory alloy and a preparation method thereof. The chemical formula of the shape memory alloy is (Ti<x>Ni<y>Cu<z>)<100-a>Nb<a>. The preparation method comprises the steps that step one, Ti, Ni, Cu and Nb are weighed out; step two, in a non-self-consumable vacuum arc furnace, raw materials are smelted to form a cast ingot; step three, the cast ingot is placed into the vacuum furnace for homogenizing treatment; and step four, the cast ingot is subjected to hot rolling to form a plate, and the plate is subjected to solution treatment in the vacuum furnace to obtain a product. The invention has the advantages that the technology is simple; the processability of the obtained product is good; the shape recovery rate is high; the hysteresis of phase transformation is small; and the TiNiCuNb shape memory alloy is a shape memory alloy with application prospect. According to the invention, the problems that the processability of the existing TiNiCuNb alloy is poor and the shape recovery rate is low are solved.

Description

A kind of TiNiCuNb shape memory alloy and preparation method thereof
Technical field
The present invention relates to a kind of shape memory alloy.The present invention also relates to a kind of preparation method of shape memory alloy.
Background technology
In recent years, the TiNiCu shape memory alloy that Cu content is greater than 7.5at% relies on its narrow hysteresis of phase transformation to cause the extensive attention of industry member.In general, hysteresis of phase transformation of TiNiCu shape memory alloy increases with Cu content and reduces, and most I reaches about 4 DEG C, greatly can improve the operating frequency of driving mechanism.But after Cu content is more than 10at.%, the cold and hot working performance of TiNiCu alloy and shape-memory properties are all deteriorated.Above-mentioned reason causes this alloy system to be difficult to obtain large-scale practical engineering application.Therefore, under the prerequisite keeping the narrow hysteresis of phase transformation characteristic of TiNiCu alloy, cold and hot working performance and the shape memory effect of improving alloy become study hotspot.Existing means mainly utilize m elt-spun overqu-enching prepare TiNiCu strip or utilize magnetron sputtering technique to prepare film, can skip the step of cold and hot working like this.But by preparation process technology limit, the thickness of strip or film is all no more than 60 microns, and this greatly constrains the practical engineering application of TiNiCu alloy.Therefore, there is in the urgent need to finding the preparation of other means the TiNiCu alloy of the high Cu content of good cold and hot working ability and shape memory effect.
" Ti 50ni 16cu 25nb 9the development of damping alloy " (Ti industry is in progress, 2009,25 (5) 26-29) middle introduction: " Ti 50ni 16cu 25nb 9it is a kind of New Damping alloy developed on the basis of TiNiCu damping alloy.X-ray diffraction (XRD) and power spectrum (EDS) analysis show, adding of Nb makes Ti 50ni 16cu 25nb 9there is eutectic reaction in alloy, generate B19 ' martensite and the fcc structure β-Nb phase of monocline in process of setting.Intra-die is the poor Cu martensite of rich Ni and the eutectic structure of β-Nb phase, and intergranular is the poor Ni phase of rich Cu, there is obvious microsegregation in alloy.High temperature solid solution thermal treatment can improve the microsegregation of alloy, but along with the increase of thermal treatment temp, β-Nb is softening nodularization trend mutually, and phase content reduces, and is unfavorable for the damping capacity of optimized alloy.900 DEG C × 2h+WQ thermal treatment obviously can improve the microsegregation of alloy, and retains appropriate strip β-Nb phase." technical way that relates in this paper replaces Ti with Nb element 50ni 25cu 25in Ni element carry out Composition Design.
Summary of the invention
The object of the present invention is to provide a kind of TiNiCuNb shape memory alloy with good cold and hot working performance.The present invention also aims to the preparation method that the simple TiNiCuNb shape memory alloy of a kind of technique is provided.
The chemical formula of TiNiCuNb shape memory alloy of the present invention is (Ti xni ycu z) 100-anb a, wherein x+y+z=100, x=48 ~ 52, z=10 ~ 25, a=3 ~ 6.
The preparation method of TiNiCuNb shape memory alloy of the present invention is:
Step one, be Ti:Ni:Cu:Nb=(x-ax/100) in the ratio of amount of substance: (y-ay/100): the ratio of (z-az/100): a takes Ti, Ni, Cu and Nb, wherein x+y+z=100, x=48 ~ 52, z=10 ~ 25, a=3 ~ 6;
Step 2, Ti, Ni, Cu and Nb element taken in step one is put into non-consumable arc furnace, vacuumize and make back end vacuum tightness reach 2 × 10 -2~ 2 × 10 -3pa, being then filled with pressure in high-purity argon gas to stove is 300 ~ 500Pa, utilizes high-temperature electric arc that Ti, Ni, Cu and Nb raw material is smelted into button-type ingot casting, then overturns, melt back 6 ~ 8 times;
Step 3, the button-type ingot casting obtained in step 2 is put into vacuum oven, vacuumize and make vacuum tightness reach 4 × 10 -2pa, is incubated 12 ~ 24h at 900 ~ 1100 DEG C;
Step 4, by the button-type ingot casting through step 3 process at 750 ~ 900 DEG C, carry out hot rolling, obtain the sheet material that thickness is 1 ~ 3mm, sheet material is put into vacuum oven, vacuumize and make vacuum tightness reach 4 × 10 -2pa, is incubated 1 ~ 2h at 800 ~ 1000 DEG C, obtains TiNiCuNb shape memory alloy.
Can only the problem of film processed or strip in order to solve the low and existing means of existing high Cu content TiNiCu alloy cold and hot working ability, shape recovery ratio, the present invention proposes a kind of TiNiCuNb shape memory alloy and preparation method thereof.
The present invention utilizes Nb plasticity good and solubleness is limited in TiNi matrix feature, considers mutually to carry out Composition Design using TiNiCu alloy and Nb as two.
Generally, after Cu content is more than 10at.%, the cold and hot working poor ability of TiNiCu shape memory alloy, this greatly constrains the engineer applied of TiNiCu alloy.Metal Nb is the extraordinary element of a kind of plasticity, and existing research shows, relative to TiNi alloy, Nb is at high temperature a kind of soft phase.The more important thing is, the solubleness of Nb in TiNiCu matrix is limited, and can not form brittlement phase with other elements.Therefore, Nb adds after in TiNiCu matrix, greatly can improve the cold and hot working ability of alloy.The present invention is by control Nb content, and can regulate and control the hysteresis of phase transformation of alloy, meanwhile, Nb, as a kind of solution strengthening element, effectively can improve the shape memory effect of alloy.The cold and hot working ability of simple, the prepared alloy of preparation method of the present invention is excellent, the hysteresis of phase transformation is little, shape recovery ratio is high, is a kind of New Shape Memory Alloys with application prospect.
Accompanying drawing explanation
Fig. 1 is that embodiment one prepares (Ti 50ni 40cu 10) 95nb 5the backscattered electron image of alloy;
Fig. 2 is that embodiment one prepares (Ti 50ni 40cu 10) 95nb 5dSC curve;
Fig. 3 is that embodiment one prepares (Ti 50ni 40cu 10) 95nb 5the shape recovery ratio of alloy under different distortion amount.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
The chemical formula of TiNiCuNb shape memory alloy of the present invention is (Ti xni ycu z) 100-anb a, wherein x+y+z=100, x=48 ~ 52, z=10 ~ 25, a=3 ~ 6.
Be preferably (Ti 50ni 40cu 10) 95nb 5shape memory alloy.
(Ti 50ni 40cu 10) 95nb 5shape memory alloy has good cold and hot working performance, and its martensite start temperature is at about 10 DEG C; Under room temperature, its yield strength is 110MPa, and breaking tenacity is 400MPa, and unit elongation is 10%; The needs of practical engineering application can be met completely.
(Ti of the present invention xni ycu z) 100-anb athe preparation method of shape memory alloy carries out according to the following steps:
One, be (x-ax/100) in the ratio of amount of substance: (y-ay/100): the ratio of (z-az/100): a takes Ti, Ni, Cu and Nb, wherein x+y+z=100, x=48 ~ 52, z=10 ~ 25, a=3 ~ 6;
Two, Ti, Ni, Cu and Nb of taking in step one are put into non-consumable arc furnace, vacuumize and make back end vacuum tightness reach 2 × 10 -2~ 2 × 10 -3pa, being then filled with pressure in high-purity argon gas to stove is 500Pa, utilizes high-temperature electric arc that Ti, Ni, Cu and Nb raw material is smelted into button-type ingot casting, then overturns, melt back 6 ~ 8 times;
Three, the button-type ingot casting obtained in step 2 is put into vacuum oven, vacuumize and make vacuum tightness reach 4 × 10 -2pa, is incubated 12 ~ 24h at 900 ~ 1100 DEG C;
Four, by the button-type ingot casting through step 3 process at 750 ~ 900 DEG C, carry out hot rolling, obtain the sheet material that thickness is 1 ~ 3mm, sheet material is put into vacuum oven, vacuumize and make vacuum tightness reach 4 × 10 -2pa, is incubated 1 ~ 2h at 800 ~ 1000 DEG C, obtains (Ti xni ycu z) 100-anb ashape memory alloy.
In step one, the purity of Ti, Ni, Cu and Nb is all not less than 99.9%.
With specific embodiment, the present invention is described in more detail below.：
Embodiment one:
A kind of (Ti 50ni 40cu 10) 95nb 5the preparation method of shape memory alloy carries out according to the following steps:
One, the ratio being 47.5:38:9.5:5 in the ratio of amount of substance takes Ti, Ni, Cu and Nb that purity is 99.9%;
Two, Ti, Ni, Cu and Nb of taking in step one are put into non-consumable arc furnace, vacuumize and make back end vacuum tightness reach 2 × 10 -3pa, be then filled with purity be 99.9% high-purity argon gas be 500Pa to pressure in stove, utilize high-temperature electric arc that Ti, Ni, Cu and Nb raw material is smelted into the button-type ingot casting that thickness is 16mm;
Three, the button-type ingot casting obtained in step 2 is put into vacuum oven, vacuumize and make vacuum tightness reach 4 × 10 -2p, is incubated 15h and carries out Homogenization Treatments at 900 DEG C;
Four, by the button-type ingot casting after step 3 Homogenization Treatments at 900 DEG C, carry out hot rolling, obtain the sheet material that thickness is 1.3mm, sheet material is put into vacuum oven, vacuumize and make vacuum tightness reach 4 × 10 -2pa, is incubated 2h and carries out solution treatment, obtain (Ti at 900 DEG C 50ni 40cu 10) 95nb 5shape memory alloy.
Adopt spark cutting method, from (Ti prepared by embodiment one 50ni 40cu 10) 95nb 5cut in shape memory alloy that length is 20mm, width is 20mm, thickness is the rectangular parallelepiped of 1.3mm, the cutting vestige on surface is ground off with sand paper, sample is observed as backscattered electron image after polishing, Fig. 1 is the backscattered electron image of sample, wherein white contrast picture is rich Nb phase, and black contrast picture is matrix phase.
Adopt spark cutting method, from (Ti prepared by embodiment one 50ni 40cu 10) 95nb 5cut in shape memory alloy that length is 3mm, width is 1.5mm, thickness is the rectangular parallelepiped of 1.3mm, the cutting vestige on surface is ground off with sand paper, Perkin-Elmer Diamond DSC tests its transformation behavior, and Fig. 2 is the DSC curve of sample, its martensite start temperature (M s) be 10 DEG C.Definition reverse transformation end temp (A f) and M sdifference be the hysteresis of phase transformation, the visible hysteresis of phase transformation is about 13 DEG C, a little more than Ti 50ni 40cu 10the hysteresis of phase transformation (11 DEG C) of alloy.
Adopt spark cutting method, from (Ti prepared by embodiment one 50ni 40cu 10) 95nb 5cut in shape memory alloy that useful length is 20mm, width is 1.5mm, thickness is the rectangular parallelepiped of 1.3mm, grind off the cutting vestige on surface with sand paper, utilize bending method to test its mechanical behavior, and and Ti 50ni 40cu 10alloy phase compares.Fig. 3 is the (Ti of preparation 50ni 40cu 10) 95nb 5alloy and Ti 50ni 40cu 10alloy is at the shape recovery ratio of different distortion amount.Visible, (Ti 50ni 40cu 10) 95nb 5the shape recovery ratio of alloy is better than Ti 50ni 40cu 10alloy.
Embodiment two:
Change the ratio of the amount of substance in the step one of embodiment one into 47.5:28.5:19:5, other steps are with embodiment one.
Embodiment three:
Change the ratio of the amount of substance in the step one of embodiment one into 47:37.6:9.4:6, other steps are with embodiment one.

Claims (3)

1. a TiNiCuNb shape memory alloy, is characterized in that chemical formula is (Ti xni ycu z) 100-anb a, wherein x+y+z=100, x=48 ~ 52, z=10 ~ 25, a=3 ~ 6.
2. TiNiCuNb shape memory alloy according to claim 1, is characterized in that chemical formula is (Ti 50ni 40cu 10) 95nb 5.
3. a preparation method for TiNiCuNb shape memory alloy, is characterized in that:
Step one, be Ti:Ni:Cu:Nb=(x-ax/100) in the ratio of amount of substance: (y-ay/100): the ratio of (z-az/100): a takes Ti, Ni, Cu and Nb, wherein x+y+z=100, x=48 ~ 52, z=10 ~ 25, a=3 ~ 6;
Step 2, Ti, Ni, Cu and Nb element taken in step one is put into non-consumable arc furnace, vacuumize and make back end vacuum tightness reach 2 × 10 -2~ 2 × 10 -3pa, being then filled with pressure in high-purity argon gas to stove is 300 ~ 500Pa, utilizes high-temperature electric arc that Ti, Ni, Cu and Nb raw material is smelted into button-type ingot casting, then overturns, melt back 6 ~ 8 times;
Step 3, the button-type ingot casting obtained in step 2 is put into vacuum oven, vacuumize and make vacuum tightness reach 4 × 10 -2pa, is incubated 12 ~ 24h at 900 ~ 1100 DEG C;
Step 4, by the button-type ingot casting through step 3 process at 750 ~ 900 DEG C, carry out hot rolling, obtain the sheet material that thickness is 1 ~ 3mm, sheet material is put into vacuum oven, vacuumize and make vacuum tightness reach 4 × 10 -2pa, is incubated 1 ~ 2h at 800 ~ 1000 DEG C, obtains TiNiCuNb shape memory alloy.
CN201510312642.XA 2015-06-09 2015-06-09 TiNiCuNb shape memory alloy and preparation method thereof Pending CN104946956A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106048378A (en) * 2016-07-08 2016-10-26 江苏科技大学 High-performance shape memory alloy, preparation method and application thereof
CN106086586A (en) * 2016-07-08 2016-11-09 苏州市皎朝纳米科技有限公司 A kind of high-performance nickel titante series marmem and its preparation method and application
CN108611506A (en) * 2018-04-08 2018-10-02 苏州诺弘添恒材料科技有限公司 A method of preparing high-performance titanium copper gallium memorial alloy
CN109135827A (en) * 2018-08-20 2019-01-04 陕西速源节能科技有限公司 One kind being used for oil field ground pipeline anti-scaling anti-corrosive device
CN110241353A (en) * 2019-07-24 2019-09-17 中国工程物理研究院机械制造工艺研究所 A kind of NiTiHfNb high-temperature shape memory alloy and preparation method thereof
CN110923508A (en) * 2019-12-12 2020-03-27 哈尔滨工程大学 NiTiHfSc high-temperature shape memory alloy and preparation method thereof
CN111394614A (en) * 2020-04-10 2020-07-10 太原理工大学 Ti-Ni-Cu-Nb elastic thermal refrigeration material and preparation method thereof
CN114875294A (en) * 2022-06-07 2022-08-09 上海工程技术大学 Titanium-nickel-based alloy material and preparation method and application thereof
CN116005035A (en) * 2022-12-30 2023-04-25 西安理工大学 Shape memory alloy and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5928548A (en) * 1982-08-06 1984-02-15 Kazuhiro Otsuka Superelastic shape-memory ni-ti base alloy and manufacture thereof
JPS59150069A (en) * 1983-02-15 1984-08-28 Hitachi Metals Ltd Manufacture of shape memory alloy
CN104060145A (en) * 2014-07-10 2014-09-24 哈尔滨工程大学 TiNiNbB shape memory alloy and preparation method thereof
CN104294066A (en) * 2014-10-15 2015-01-21 中国科学院金属研究所 Rapid solidification preparation method of ultrahigh-strength plasticity TiNiNbMo shape memory alloy

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5928548A (en) * 1982-08-06 1984-02-15 Kazuhiro Otsuka Superelastic shape-memory ni-ti base alloy and manufacture thereof
JPS59150069A (en) * 1983-02-15 1984-08-28 Hitachi Metals Ltd Manufacture of shape memory alloy
CN104060145A (en) * 2014-07-10 2014-09-24 哈尔滨工程大学 TiNiNbB shape memory alloy and preparation method thereof
CN104294066A (en) * 2014-10-15 2015-01-21 中国科学院金属研究所 Rapid solidification preparation method of ultrahigh-strength plasticity TiNiNbMo shape memory alloy

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
侯智敏等: "Ti50Ni16Cu25Nb9阻尼合金的研制", 《钛工业进展》 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106048378A (en) * 2016-07-08 2016-10-26 江苏科技大学 High-performance shape memory alloy, preparation method and application thereof
CN106086586A (en) * 2016-07-08 2016-11-09 苏州市皎朝纳米科技有限公司 A kind of high-performance nickel titante series marmem and its preparation method and application
CN108611506A (en) * 2018-04-08 2018-10-02 苏州诺弘添恒材料科技有限公司 A method of preparing high-performance titanium copper gallium memorial alloy
CN109135827A (en) * 2018-08-20 2019-01-04 陕西速源节能科技有限公司 One kind being used for oil field ground pipeline anti-scaling anti-corrosive device
CN110241353A (en) * 2019-07-24 2019-09-17 中国工程物理研究院机械制造工艺研究所 A kind of NiTiHfNb high-temperature shape memory alloy and preparation method thereof
CN110241353B (en) * 2019-07-24 2020-09-29 中国工程物理研究院机械制造工艺研究所 NiTiHfNb high-temperature shape memory alloy and preparation method thereof
CN110923508A (en) * 2019-12-12 2020-03-27 哈尔滨工程大学 NiTiHfSc high-temperature shape memory alloy and preparation method thereof
CN111394614A (en) * 2020-04-10 2020-07-10 太原理工大学 Ti-Ni-Cu-Nb elastic thermal refrigeration material and preparation method thereof
CN114875294A (en) * 2022-06-07 2022-08-09 上海工程技术大学 Titanium-nickel-based alloy material and preparation method and application thereof
CN114875294B (en) * 2022-06-07 2023-05-12 上海工程技术大学 Titanium nickel base alloy material and preparation method and application thereof
CN116005035A (en) * 2022-12-30 2023-04-25 西安理工大学 Shape memory alloy and preparation method thereof

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Application publication date: 20150930