CN104372272A - Heat treatment technology for increasing hysteretic energy of copper-based memory alloy with Ms of being 66 DEG C - Google Patents
Heat treatment technology for increasing hysteretic energy of copper-based memory alloy with Ms of being 66 DEG C Download PDFInfo
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- CN104372272A CN104372272A CN201310358459.4A CN201310358459A CN104372272A CN 104372272 A CN104372272 A CN 104372272A CN 201310358459 A CN201310358459 A CN 201310358459A CN 104372272 A CN104372272 A CN 104372272A
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- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- 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
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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Abstract
The invention relates to a heat treatment technology for increasing hysteretic energy of a copper-based memory alloy by Ms of being 66 DEG C, which belongs to the copper-based memory alloy field. The heat treatment technology is characterized by comprising the following steps: annealing an obtained copper-zinc-aluminum memory alloy, insulating for 24 hours at 850 DEG C and cooling in furnace, then cutting to remove a dezincification layer with thickness of 2-3mm on the surface and removing the casting defects, employing three heat treatment methods to obtain the copper-zinc-aluminum memory alloy with Ms of being 60-72 DEG C, and finally calculating the hysteretic ring area.
Description
Technical field
The invention belongs to field of memory alloy, refer in particular to and improve the thermal treatment process that Ms is the copper-based memory alloy hysteretic energy of 66 DEG C.
Background technology
Advantages such as mild steel is strong owing to having deformability, cheap and by the preferred material as energy consumer, but with the energy consumer that mild steel makes, there is initial stiffness and yielding stress low, the shortcomings such as not reproducible use.And memorial alloy significant advantage is as follows in contrast: the energy consumption and distortion of (1) memorial alloy energy consumer is occurred by material inside organization change (martensitic transformation), alloy material inside can not produce a lot of defect, fatigue property is good, its long service life, can Reusability; (2) there is the advantages such as good adaptive ability.And at present for the memorial alloy mainly NiTi alloy of structural vibration control, but due to the price (being about 10 times of Cu base memorial alloy) of NiTi alloy costliness and the production technique of complexity, seriously limit the widespread use of alloy in this and popularization.
The advantages such as it is wide that copper-based memory alloy has phase transformation adjustable temps, and good processability, raw material sources are extensive, with low cost, have very tempting application prospect in structure control field.Its path of compression and decompression in deformation process does not overlap and forms a closed hysteretic loop, thus lot of energy, the size of alloy hysteretic loop is not only relevant with the kind of material, and relevant with factors such as thermal treatment process (comprising solid solubility temperature, quenching mode, speed of cooling) and texturizing conditions (deflection, texturing temperature, Deformation velocity).For the alloy that composition is certain, thermal treatment can change its tissue, comprises the phase composite of alloy, the composition of each phase, state, grain size and distribution, thus the change affecting alloy property.
The present invention proposes to improve the thermal treatment process that Ms is the copper-based memory alloy hysteretic energy of 66 DEG C.
Summary of the invention
The present invention proposes to improve the thermal treatment process that Ms is the copper-based memory alloy hysteretic energy of 66 DEG C, it is characterized by: first anneal is carried out to the cu-zn-al alloy obtained, furnace cooling after being incubated 24 hours at 850 DEG C, then cut dezincify layer and the casting flaw of the 2 ~ 3mm removing surface, then take three kinds of mode process respectively:
1, shrend adds timeliness, and namely 830-850 DEG C of insulation is quenched in room temperature water in 0.5 hour, and then in the holding furnace of 140 DEG C-150 DEG C, ageing treatment took out air cooling to room temperature after 2 hours;
2, oil quenching adds timeliness, and namely 830-850 DEG C of insulation is quenched in room temperature machine oil for 0.5 hour, and then in the holding furnace of 140 DEG C-150 DEG C, ageing treatment took out air cooling to room temperature after 2 hours;
3, marquenching, namely 830-850 DEG C of insulation is quenched in 140 DEG C of-150 DEG C of machine oil for 0.5 hour, then is incubated 0.5 hour and quenches in room temperature water, and then in the holding furnace of 140 DEG C-150 DEG C, ageing treatment took out air cooling to room temperature after 2 hours.
Can obtain by above heat treating method the CuZnAl shape memory alloy that Ms is 50 DEG C ± 6 DEG C, hysteretic loop is larger, and hysteretic energy performance is excellent.Through calculating its hysteretic loop, effect is it is preferred that the heat-treatment technology method of marquenching.
accompanying drawing explanation
Fig. 1 is the CuZnAl shape memory alloy hysteretic energy performance curve of 66 DEG C without thermal treatment Ms.
Fig. 2 through shrend+aging strengthening model Ms be the CuZnAl shape memory alloy hysteretic energy performance curve of 66 DEG C.
Fig. 3 through oil quenching+aging strengthening model Ms be the CuZnAl shape memory alloy hysteretic energy performance curve of 66 DEG C.
Fig. 4 through marquenching thermal treatment Ms be the CuZnAl shape memory alloy hysteretic energy performance curve of 66 DEG C.
Embodiment
embodiment 1
First anneal is carried out to the cu-zn-al alloy obtained, furnace cooling after being incubated 24 hours at 850 DEG C, then cut dezincify layer and the casting flaw of the 2 ~ 3mm removing surface, obtain sample by Linear cut and be of a size of: 250mm × 15mm × 0.2mm, effective tensile elongation of sample is 210mm.Utilize the hysteresis loop of WDW-200 type microcomputer controlled electro minor universal testing machine copper test aluminium zinc.Samples all before testing all carries out the preliminary draft that deflection is 1%, and test force maximum in process of the test is 800N.Alloy hysteresis loop surround area size reflect the quality of alloy Hysteresis Behavior, thus the size of reflect alloy energy-dissipating property, as shown in Figure 1.
embodiment 2
First anneal is carried out to the cu-zn-al alloy obtained, furnace cooling after being incubated 24 hours at 850 DEG C, then dezincify layer and the casting flaw of the 2 ~ 3mm removing surface is cut, carry out shrend and add aging strengthening model, namely 830-850 DEG C of insulation is quenched in room temperature water in 0.5 hour, then in the holding furnace of 140 DEG C-150 DEG C, ageing treatment took out air cooling to room temperature after 2 hours, obtained the CuZnAl shape memory alloy that Ms is 66 DEG C ± 6 DEG C.Obtain sample by Linear cut to be of a size of: 250mm × 15mm × 0.2mm, effective tensile elongation of sample is 210mm.Utilize WDW-200 type microcomputer controlled electro minor universal testing machine to test memorial alloy and add the hysteresis loop after aging strengthening model through shrend.Samples all before testing all carries out the preliminary draft that deflection is 1%, and test force maximum in process of the test is 800N.Alloy hysteresis loop surround area size reflect the quality of alloy Hysteresis Behavior, thus the size of reflect alloy energy-dissipating property, as shown in Figure 2.
embodiment 3
First anneal is carried out to the cu-zn-al alloy obtained, furnace cooling after being incubated 24 hours at 850 DEG C, then cut dezincify layer and the casting flaw of the 2 ~ 3mm removing surface.Carry out oil quenching and add aging strengthening model, namely 830-850 DEG C of insulation is quenched in room temperature machine oil for 0.5 hour, and then in the holding furnace of 140 DEG C-150 DEG C, ageing treatment took out air cooling to room temperature after 2 hours, obtains the CuZnAl shape memory alloy that Ms is 66 DEG C ± 6 DEG C.Obtain sample by Linear cut to be of a size of: 250mm × 15mm × 0.2mm, effective tensile elongation of sample is 210mm.Utilize WDW-200 type microcomputer controlled electro minor universal testing machine to test memorial alloy and add the hysteresis loop after aging strengthening model through oil quenching.Samples all before testing all carries out the preliminary draft that deflection is 1%, and test force maximum in process of the test is 800N.Alloy hysteresis loop surround area size reflect the quality of alloy Hysteresis Behavior, thus the size of reflect alloy energy-dissipating property, as shown in Figure 3.
embodiment 4
First anneal is carried out to the cu-zn-al alloy obtained, furnace cooling after being incubated 24 hours at 850 DEG C, then cut dezincify layer and the casting flaw of the 2 ~ 3mm removing surface.Carry out marquenching thermal treatment, namely 830-850 DEG C of insulation is quenched in 140 DEG C of-150 DEG C of machine oil for 0.5 hour, being incubated 0.5 hour again quenches in room temperature water, then in the holding furnace of 140 DEG C-150 DEG C, ageing treatment took out air cooling to room temperature after 2 hours, obtained the CuZnAl shape memory alloy that Ms is 66 DEG C ± 6 DEG C.Obtain sample by Linear cut to be of a size of: 250mm × 15mm × 0.2mm, effective tensile elongation of sample is 210mm.WDW-200 type microcomputer controlled electro minor universal testing machine is utilized to test the hysteresis loop of memorial alloy after marquenching thermal treatment.Samples all before testing all carries out the preliminary draft that deflection is 1%, and test force maximum in process of the test is 800N.Alloy hysteresis loop surround area size reflect the quality of alloy Hysteresis Behavior, thus the size of reflect alloy energy-dissipating property, as shown in Figure 4.
Claims (2)
1. improve the thermal treatment process that Ms is the copper-based memory alloy hysteretic energy of 66 DEG C, it is characterized by: first anneal is carried out to the cu-zn-al alloy obtained, furnace cooling after being incubated 24 hours at 850 DEG C, then dezincify layer and the casting flaw of the 2 ~ 3mm removing surface is cut, then three kinds of mode process are taked respectively: 1, shrend adds timeliness, namely 830-850 DEG C of insulation is quenched in room temperature water in 0.5 hour, and then in the holding furnace of 140 DEG C-150 DEG C, ageing treatment took out air cooling to room temperature after 2 hours; 2, oil quenching adds timeliness, and namely 830-850 DEG C of insulation is quenched in room temperature machine oil for 0.5 hour, and then in the holding furnace of 140 DEG C-150 DEG C, ageing treatment took out air cooling to room temperature after 2 hours; 3, marquenching, namely 830-850 DEG C of insulation is quenched in 140 DEG C of-150 DEG C of machine oil for 0.5 hour, then is incubated 0.5 hour and quenches in room temperature water, and then in the holding furnace of 140 DEG C-150 DEG C, ageing treatment took out air cooling to room temperature after 2 hours.
2. improving Ms is according to claim 1 the thermal treatment process of the copper-based memory alloy hysteretic energy of 66 DEG C, and thermal treatment can preferably marquenching, and now this memorial alloy hysteretic energy performance is best.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5284121A (en) * | 1975-12-31 | 1977-07-13 | Matsushita Electric Works Ltd | Shape memory alloy |
| JPS59200747A (en) * | 1983-04-28 | 1984-11-14 | Toyota Motor Corp | Heat treatment of cu-zn-al type shape memory alloy |
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2013
- 2013-08-16 CN CN201310358459.4A patent/CN104372272A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5284121A (en) * | 1975-12-31 | 1977-07-13 | Matsushita Electric Works Ltd | Shape memory alloy |
| JPS59200747A (en) * | 1983-04-28 | 1984-11-14 | Toyota Motor Corp | Heat treatment of cu-zn-al type shape memory alloy |
Non-Patent Citations (1)
| Title |
|---|
| 司乃潮等: "CuZnAl形状记忆合金热机械循环滞回曲线与振动衰减特征研究", 《铸造》, vol. 53, no. 11, 30 November 2004 (2004-11-30), pages 866 - 867 * |
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Application publication date: 20150225 |