EP0035069A1 - Alliage à mémoire de forme à base de Cu-Al ou de Cu-Al-Ni et procédé pour la stabilisation de l'effet de réversibilité - Google Patents
Alliage à mémoire de forme à base de Cu-Al ou de Cu-Al-Ni et procédé pour la stabilisation de l'effet de réversibilité Download PDFInfo
- Publication number
- EP0035069A1 EP0035069A1 EP19800200183 EP80200183A EP0035069A1 EP 0035069 A1 EP0035069 A1 EP 0035069A1 EP 19800200183 EP19800200183 EP 19800200183 EP 80200183 A EP80200183 A EP 80200183A EP 0035069 A1 EP0035069 A1 EP 0035069A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- memory alloy
- shape memory
- way effect
- temperature range
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000694 effects Effects 0.000 title claims abstract description 18
- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 13
- 230000006641 stabilisation Effects 0.000 title description 3
- 229910017535 Cu-Al-Ni Inorganic materials 0.000 title 1
- 229910017767 Cu—Al Inorganic materials 0.000 title 1
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 230000032683 aging Effects 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 17
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 13
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000000137 annealing Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 230000003446 memory effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/006—Resulting in heat recoverable alloys with a memory effect
Definitions
- the invention is based on a shape memory alloy according to the preamble of claim 1 and on a method for stabilizing the two-way effect according to the preamble of claims 6 and 7.
- these alloys show a clear memory effect compared to the known Ni / Ti alloys in a temperature range of more than 100 ° C (which is particularly interesting for temperature monitoring devices and overcurrent switches), they are metastable. This means that they are subject to phase changes due to diffusion in the desired temperature range. At the response temperature or just above it, the high-temperature ⁇ phase changes and the memory effect is lost.
- the invention is based on the object of specifying aging-resistant memory alloys of the Cu / Al or Cu / Al / Ni type at temperatures of over 100 ° C. and a method for their production or stabilization of the two-way effect.
- the method of stabilization consists essentially in a heat treatment of the alloy in the cast or hot-kneaded state after the last annealing in the ⁇ mixed-crystal region in the temperature range from 600 to 950 ° C. (5 to 60 min) and before the induction of the two-way effect.
- the heat treatment is an annealing in the temperature range of 200 to 350 ° C, which can in principle be carried out in two ways. In a first process, the alloy is after the last annealing in the ⁇ mixed crystal region quenched to room temperature and then tempered for 0.1 to 10 h in the temperature range from 200 to 350 ° C.
- the alloy is quenched after the last annealing from the / 3 mixed crystal region directly into an oil, salt, metal or sand bath at 250 to 350 ° C., held here for 0.5 to 10 minutes and finally on the air cooled to room temperature.
- this heat treatment is followed by a deformation of 1 to 6% in the range from 30 ° C. above to 50 ° C. below the point of the martensitic transformation M S in order to induce the two-way memory effect.
- the method extends to the entire alloy group of the ⁇ -type Cu / Al and Cu / Al / Ni, in particular to alloys with 10 to 15% by weight aluminum, 0 to 6% by weight nickel, the rest copper.
- the nickel can be partially or completely replaced by manganese, iron, cobalt or a mixture of at least two of these elements. Alloys produced by this process are resistant to aging up to 300 C, i.e. they mainly consist of the ⁇ high-temperature phase and show a stable two-way effect.
- Exemplary embodiment I (explanation of the prior art) An alloy of the following composition was used as the starting material:
- the alloy was produced by melt metallurgy, cast into an ingot and then thermoformed at 700 ° C in such a way that a rod with a diameter of 10 mm was created. The rod was then subjected to annealing in the ⁇ mixed-crystal region for 10 min at 750 ° C. and quenched in water. Torsion samples with a total measuring length of 40 mm and a measuring length of 22 mm with a diameter of 3 mm were worked out from the rod.
- the two-way effect was induced by subjecting the samples to torsional stress in the vicinity of the martensitic transformation point M S (150 ° C.) in such a way that the torsional strain was gradually increased to 4 to 5% while simultaneously going through a heating / cooling cycle .
- the samples were then annealed at a temperature of 300 ° C. for 1 h. The review showed that the memory effect had completely disappeared.
- the invention is not limited to the examples above. In principle, the method can be applied to all ⁇ -copper alloys of this type.
- Another cheap alloy has the following composition:
- the level of the transition temperature M S can obviously be strongly influenced by small variations in the aluminum content.
- the above-mentioned substitutes manganese, iron, cobalt can also be used.
- the method according to the invention creates memory alloys which exceed those in electro technology and in many industrial and household applications, the usual range of temperature monitoring are resistant to aging and show a stable two-way effect. This closes a previously existing gap in surveillance technology.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
- Heat Treatment Of Articles (AREA)
- Adornments (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8080200183T DE3065930D1 (en) | 1980-03-03 | 1980-03-03 | Memory alloy based on cu-al or on cu-al-ni and process for the stabilisation of the two-way effect |
| EP19800200183 EP0035069B1 (fr) | 1980-03-03 | 1980-03-03 | Alliage à mémoire de forme à base de Cu-Al ou de Cu-Al-Ni et procédé pour la stabilisation de l'effet de réversibilité |
| PT7259081A PT72590B (de) | 1980-03-03 | 1981-02-27 | Harzmischung |
| JP2850381A JPS56136945A (en) | 1980-03-03 | 1981-03-02 | Shaped memory alloy based on cu al or cu al ni and stabilization of said alloy in two-direction effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19800200183 EP0035069B1 (fr) | 1980-03-03 | 1980-03-03 | Alliage à mémoire de forme à base de Cu-Al ou de Cu-Al-Ni et procédé pour la stabilisation de l'effet de réversibilité |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0035069A1 true EP0035069A1 (fr) | 1981-09-09 |
| EP0035069B1 EP0035069B1 (fr) | 1983-12-21 |
Family
ID=8186965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19800200183 Expired EP0035069B1 (fr) | 1980-03-03 | 1980-03-03 | Alliage à mémoire de forme à base de Cu-Al ou de Cu-Al-Ni et procédé pour la stabilisation de l'effet de réversibilité |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0035069B1 (fr) |
| JP (1) | JPS56136945A (fr) |
| DE (1) | DE3065930D1 (fr) |
| PT (1) | PT72590B (fr) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0086014A1 (fr) * | 1982-02-05 | 1983-08-17 | BBC Brown Boveri AG | Procédé pour la fabrication et la stabilisation de l'effet de réversibilité à deux directions dans un alliage mémoire de forme à base de Cu-Al-Ni ou de Cu-Al |
| US4533411A (en) * | 1983-11-15 | 1985-08-06 | Raychem Corporation | Method of processing nickel-titanium-base shape-memory alloys and structure |
| US4634477A (en) * | 1984-07-20 | 1987-01-06 | Kabushiki Kaisha Kobe Seiko Sho | Workable high strength shape memory alloy |
| EP0209466A2 (fr) * | 1985-07-19 | 1987-01-21 | Souriau Et Cie | Dispositif de déclenchement mécanique séquentiel |
| US4654092A (en) * | 1983-11-15 | 1987-03-31 | Raychem Corporation | Nickel-titanium-base shape-memory alloy composite structure |
| EP0297004A2 (fr) * | 1987-06-24 | 1988-12-28 | CEZUS Compagnie Européenne du Zirconium | Utilisation d'un procédé pour améliorer la ductilité d'un produit en alliage à transformation martensitique |
| FR2618163A1 (fr) * | 1987-07-15 | 1989-01-20 | Trefimetaux | Procede d'education d'un objet en alliage a memoire de forme, permettant d'assurer la precision et la stabilite de l'effet memoire reversible. |
| EP0382109A1 (fr) * | 1989-02-08 | 1990-08-16 | Nivarox-FAR S.A. | Procédé de conditionnement d'une pièce en alliage métallique à mémoire de forme présentant deux états de mémoire de forme réversibles |
| FR2643086A1 (fr) * | 1989-02-10 | 1990-08-17 | Nivarox Sa | Procede de conditionnement d'une piece en alliage metallique a memoire de forme presentant deux etats de memoire de forme reversibles |
| US5066341A (en) * | 1989-02-08 | 1991-11-19 | Nivarox-Far S. A. | Method of conditioning an article of shape memory metallic alloy having two reversible shape memory states |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384984B (zh) * | 2018-04-09 | 2020-01-03 | 天津理工大学 | 一种低成本高温形状记忆合金的制备方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB433534A (en) * | 1934-02-12 | 1935-08-12 | Thomas Bolton And Sons Ltd | Improved trolley wheels and the like devices for collecting electric current |
| GB1346047A (en) * | 1969-11-12 | 1974-02-06 | Fulmer Res Inst Ltd | Treatment of alloys |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE758862A (fr) * | 1969-11-12 | 1971-04-16 | Fulmer Res Inst Ltd | Perfectionnements relatifs au traitement d'alliages |
| JPS5818427B2 (ja) * | 1974-07-05 | 1983-04-13 | 大阪大学長 | 繰り返し形状記憶性を有する金属物品の製法 |
| JPS5337129A (en) * | 1976-09-17 | 1978-04-06 | Matsushita Electric Works Ltd | Conductible spring material |
-
1980
- 1980-03-03 EP EP19800200183 patent/EP0035069B1/fr not_active Expired
- 1980-03-03 DE DE8080200183T patent/DE3065930D1/de not_active Expired
-
1981
- 1981-02-27 PT PT7259081A patent/PT72590B/pt not_active IP Right Cessation
- 1981-03-02 JP JP2850381A patent/JPS56136945A/ja active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB433534A (en) * | 1934-02-12 | 1935-08-12 | Thomas Bolton And Sons Ltd | Improved trolley wheels and the like devices for collecting electric current |
| GB1346047A (en) * | 1969-11-12 | 1974-02-06 | Fulmer Res Inst Ltd | Treatment of alloys |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0086014A1 (fr) * | 1982-02-05 | 1983-08-17 | BBC Brown Boveri AG | Procédé pour la fabrication et la stabilisation de l'effet de réversibilité à deux directions dans un alliage mémoire de forme à base de Cu-Al-Ni ou de Cu-Al |
| US4654092A (en) * | 1983-11-15 | 1987-03-31 | Raychem Corporation | Nickel-titanium-base shape-memory alloy composite structure |
| US4533411A (en) * | 1983-11-15 | 1985-08-06 | Raychem Corporation | Method of processing nickel-titanium-base shape-memory alloys and structure |
| US4634477A (en) * | 1984-07-20 | 1987-01-06 | Kabushiki Kaisha Kobe Seiko Sho | Workable high strength shape memory alloy |
| EP0209466A3 (en) * | 1985-07-19 | 1987-09-02 | Souriau Et Cie | Mechanical device for sequential triggering |
| FR2590048A1 (fr) * | 1985-07-19 | 1987-05-15 | Souriau & Cie | Dispositif de declenchement mecanique sequentiel |
| EP0209466A2 (fr) * | 1985-07-19 | 1987-01-21 | Souriau Et Cie | Dispositif de déclenchement mécanique séquentiel |
| EP0297004A2 (fr) * | 1987-06-24 | 1988-12-28 | CEZUS Compagnie Européenne du Zirconium | Utilisation d'un procédé pour améliorer la ductilité d'un produit en alliage à transformation martensitique |
| FR2617187A1 (fr) * | 1987-06-24 | 1988-12-30 | Cezus Co Europ Zirconium | Procede d'amelioration de la ductilite d'un produit en alliage a transformation martensitique et son utilisation |
| EP0297004A3 (en) * | 1987-06-24 | 1989-06-28 | Cezus Compagnie Europeenne Du Zirconium | Process for improving the ductility of a product made from a martensitic transformation alloy and the use thereof |
| FR2618163A1 (fr) * | 1987-07-15 | 1989-01-20 | Trefimetaux | Procede d'education d'un objet en alliage a memoire de forme, permettant d'assurer la precision et la stabilite de l'effet memoire reversible. |
| EP0382109A1 (fr) * | 1989-02-08 | 1990-08-16 | Nivarox-FAR S.A. | Procédé de conditionnement d'une pièce en alliage métallique à mémoire de forme présentant deux états de mémoire de forme réversibles |
| US5066341A (en) * | 1989-02-08 | 1991-11-19 | Nivarox-Far S. A. | Method of conditioning an article of shape memory metallic alloy having two reversible shape memory states |
| FR2643086A1 (fr) * | 1989-02-10 | 1990-08-17 | Nivarox Sa | Procede de conditionnement d'une piece en alliage metallique a memoire de forme presentant deux etats de memoire de forme reversibles |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56136945A (en) | 1981-10-26 |
| JPH0138867B2 (fr) | 1989-08-16 |
| EP0035069B1 (fr) | 1983-12-21 |
| DE3065930D1 (en) | 1984-01-26 |
| PT72590A (de) | 1981-03-01 |
| PT72590B (de) | 1982-02-12 |
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