CN108251622A - A kind of heat treatment method of FeGa base high-damping alloys - Google Patents
A kind of heat treatment method of FeGa base high-damping alloys Download PDFInfo
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- CN108251622A CN108251622A CN201810017905.8A CN201810017905A CN108251622A CN 108251622 A CN108251622 A CN 108251622A CN 201810017905 A CN201810017905 A CN 201810017905A CN 108251622 A CN108251622 A CN 108251622A
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- fega
- heat treatment
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/78—Combined heat-treatments not provided for above
- C21D1/785—Thermocycling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
Abstract
The invention discloses a kind of heat treatment methods of FeGa base high-damping alloys, the defects of this method eliminates material internal by pretreatment, then 800 DEG C are heated to the heating rate of 120 DEG C/h, keep the temperature 1h, 580 660 DEG C are furnace-cooled to the rate of 120 DEG C/h, 0.5h is kept the temperature, makes material internal temperature uniform, order disorder transition phase transformation fully carries out, and finally carries out quenching treatment.Compared with existing heat treatment process, which can greatly improve under short arc (≤120 × 10‑6) the intrinsic damping capacity of material, compared to original sample, damping value promotes 1.5 3 times；Fe base high-damping material damping values compared to prior heat treatment promote 2 3.5 times.Meanwhile the advantages of technique, is what entire heat treatment process carried out below recrystallization temperature, significantly almost without the mechanical property of damage material while promotion material damping performance.
Description
Technical field
The present invention relates to the technical field of heat treatment of high damping alloy, and in particular to a kind of heat of FeGa base high-damping alloys
Processing method.
Background technology
In recent years, FeGa based alloys as magnetostriction materials of new generation by extensive concern, when magnetostriction material
When material is by externally-applied magnetic field and stress field action, internal magnetic domain can occur to rotate accordingly, can cause energy in this process
Loss, thus as the source of high damping properties.Traditional Fe base high-dampings material such as alloys such as FeCr bases, FeAl bases, FeMo bases
Mainly by way of soak and furnace cooling, crystallite dimension is made to grow up, internal stress reduces, so as to be conducive to the rotation of magnetic domain and
Migration, promotes the damping capacity of alloy, such as FeCr based alloys, and the optimal heat treatment mode for obtaining high damping properties at present is
1h, and furnace cooling are kept the temperature at 1100 DEG C.At present, the heat treatment process of FeGa based alloys, which is concentrated mainly on, promotes its Magnetostriction
Aspect, concurrent present 1000 DEG C of heat preservations 1h, and quenching can significantly improve Magnetostriction.However, whether pass through high temperature
The simultaneously mode of furnace cooling or the mode of high temperature quenching are kept the temperature, FeGa based alloy damping capacities cannot all be obviously improved, and compare
Other Fe based alloys do not have apparent advantage yet, on the contrary, progress high-temperature heat treatment results in more than recrystallization temperature
The mechanical property of FeGa based alloys significantly reduces, and limits its scope of application.Therefore, (do not occur again not damaging mechanical property
Crystallization) under the premise of, the heat treatment process of FeGa based alloys is designed so as to greatly improve its damping capacity from completely new angle,
It is most important to the application range for widening FeGa based alloys.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of heat treatments of FeGa base high-damping alloys
Method, to solve the technical issues of existing heat treatment process can not be obviously improved FeGa based alloy damping capacities.
To achieve the above object, the present invention provides following technical solution：
The present invention provides a kind of heat treatment method of FeGa base high-damping alloys, including：
Step 1：By hot and cold alternation endless form, by FeGa base alloy materials hot and cold alternation cycle several times after,
800 DEG C heat preservation 1h and more than；Alternatively, directly by FeGa base alloy materials in 800 DEG C of continuous heat preservation more than 6h；By pretreatment temperature
Control in the case of no more than recrystallization temperature, greatly limit can ensure material internal defect and internal internal stress at 800 DEG C
It is eliminated；
Step 2：By step 1 treated material slowly cools to shortrange order, mutually there are 580-660 DEG C of warm area, heat preservations
More than 0.5h, with ensure material internal order-disorder reaction fully carry out, after carry out quenching treatment immediately；It can by rapid quenching
So that the reservation as much as possible of High Temperature Short ordered phase, the sample damping capacity that ensures that treated has the promotion of matter.
The step 1 hot and cold alternation cycle using FeGa base alloy materials be heated to 800 DEG C then be cooled to again room temperature as
One cycle.
In the heating and cooling process of the step 1, heating temperature-fall period is carried out with the rate of 120 DEG C/h, it is ensured that entire
Processing procedure alloy sample temperature is uniform.
In the hot and cold alternation endless form of the step 1, heating and cooling cycle-index is more, and material internal internal stress reduces
Amplitude is bigger, and the last damping capacity of respective material is better, but basically reaches saturation after being recycled to 5 times, and therefore, the heating and cooling follow
The number of ring is preferably 3-5 times.
During the continuous isothermal holding of the step 1,800 DEG C of continuous soaking times are longer, and material internal internal stress subtracts
Bigger by a small margin, the last damping capacity of respective material is better, but in the process it should be noted that the recrystallization of prevention crystal grain is grown up
Behavior, therefore, described 800 DEG C continuous soaking times are preferably 6h, it is ensured that no recrystallization grow up behavior while will be in material
Portion's internal stress is reduced to perfect condition.
In the step 2, rate of the slow cooling rate less than 120 DEG C/h carries out, and cooldown rate is slower, material internal
Heated more uniform, order-disorder reaction is more abundant.
In the step 2, reduce the temperature to shortrange order by way of continuous cooling or staged cooling and mutually exist
Warm area (580-660 DEG C).
In the step 2, the method for quenching treatment is handled for Water Quenching or oil quenching.
The present invention has the following advantages compared with prior art：
1. damping is high：The alloy sample handled by this method, (20-120 × 10 in the range of short arc-6), the item of 1Hz
Under part, damping capacity is substantially improved：Compared to original sample, damping value promotes 1.5-3 times；Compared to the Fe base high-dampings of prior heat treatment
Material damping value promotes 2-3.5 times；
2. wide temperature range：Damping value keeps stablizing at -85 DEG C -160 DEG C, does not change substantially with temperature；Compared to other non-Fe
Base high-damping material has broader application range.
3. in entire heat treatment process, sample does not recrystallize, and the mechanical property of material does not decline.
4. the FeGa based specimens quenched by 580 DEG C, Internal friction is 30 × 10 in amplitude-6, can under conditions of 1Hz
Up to 0.031.
Description of the drawings
Fig. 1 is based on 1 heat treatment process schematic diagram of the embodiment of the present invention；
Fig. 2 is based on 2 heat treatment process schematic diagram of the embodiment of the present invention；
Fig. 3 is based on 3 heat treatment process schematic diagram of the embodiment of the present invention；
Fig. 4 is in the range of the hardening heat by the present invention outside FeGa alloys and the range of quenching treatment in quenching treatment
Consume contrast schematic diagram；
Fig. 5 is the FeGa alloys handled by the method for the present invention and the FeGa and classics that are not handled by the method for the present invention
FeCrAl high damping material short arcs under in-fighting contrast schematic diagram；
Fig. 6 is in -85-300 DEG C of in-fighting-temperature curves by the FeGa alloys that the method for the present invention is handled；
Fig. 7 is that the FeGa alloys handled by the method for the present invention are surrendered with the FeGa alloys not handled by the method for the present invention
Intensity contrast schematic diagram.
Specific embodiment
The technical solution of this patent is described in further detail With reference to embodiment, present embodiment with
Implemented under premised on technical solution of the present invention, but the protection domain of this patent is not limited to embodiment disclosed below.
Embodiment 1
Present embodiments provide a kind of heat treatment method of wide temperature zone high damping FeGa based alloys, as shown in Figure 1, including with
Lower step：
(1) it pre-processes：Alloy sample is placed in Tubular thermal treatment furnace, under the protective atmosphere of argon gas, with 120 DEG C/h's
Heating rate is heated to 800 DEG C, keeps the temperature 1h, then cool to room temperature with the furnace with 120 DEG C/h rate of temperature fall, recycles 4 times altogether；
(2) heat：In Tubular thermal treatment furnace, under the protective atmosphere of Ar gas, added with the heating rate of 120 DEG C/h
Heat keeps the temperature 1h to 800 DEG C；
(3) furnace cooling is handled：Cooling processing is carried out by the alloy sample of heat treatment, rate of temperature fall is 90 DEG C/h, is being cooled down
During respectively at 750 DEG C, 700 DEG C, 680 DEG C, 660 DEG C, 640 DEG C keep the temperature 0.5h；
(4) quenching treatment：Water Quenching is carried out rapidly by the sample that 0.5h is kept the temperature at 640 DEG C, is cooled to room temperature.
Embodiment 2
Present embodiments provide a kind of heat treatment method of wide temperature zone high damping FeGa based alloys, as shown in Fig. 2, including with
Lower step：
(1) it pre-processes and heats：Alloy sample is placed in Tubular thermal treatment furnace, under the protective atmosphere of argon gas,
800 DEG C are heated to the heating rate of 120 DEG C/h, keeps the temperature 6h；
(2) furnace cooling is handled：Cooling processing is carried out by the alloy sample of heat treatment, rate of temperature fall is 90 DEG C/h, works as temperature
620 DEG C are dropped to, keeps the temperature 1h；
(3) quenching treatment：The sample that 1h is kept the temperature at 620 DEG C is subjected to rapidly Water Quenching, is cooled to room temperature.
Embodiment 3
A kind of heat treatment method of FeGa base high-damping alloys is present embodiments provided, as shown in figure 3, including following step
Suddenly：
(1) FeGa base alloy materials are first warming up to by pretreatment by hot and cold alternation endless form with the rate of 120 DEG C/h
800 DEG C, after keeping the temperature 1h, then room temperature is down to stove with the rate of 120 DEG C/h, such cycle recycles 4 times, altogether to reduce material
Internal stress；
(2) heat：In Tubular thermal treatment furnace, under the protective atmosphere of Ar gas, added with the heating rate of 120 DEG C/h
Heat keeps the temperature 1h to 800 DEG C；
(3) furnace cooling is handled：450-750 DEG C of a certain temperature is cooled to the rate of 90 DEG C/h by the alloy sample of heat treatment
Degree keeps the temperature 0.5h.
(4) quenching treatment：The sample for keeping the temperature 0.5h is rapid, oil quenching processing is carried out immediately, is cooled to room temperature.
The assessment of damping capacity is carried out to the material of the present embodiment processing, wherein：Internal Friction Meter pair is rocked using multifunction pouring
FeGa based alloys sample damping capacity characterization measures under different disposal method；Using forced vibration pattern to different disposal side
FeGa based alloys sample carries out torsional deflection under method；It is bent using the reinforcing and vibration of the real-time capturing material of stress and strain sensor
Line；Internal friction is obtained by the quotient of amplitudes and the two angle of lag that calculate ess-strain；Size (Q is obtained by Internal friction-1) right
The damping capacity of material is assessed；The assessment of damping capacity is concentrated mainly in the range of short arc (≤120 × 10-6), 1Hz
In the case of, the size of damping capacity is obtained by comparing Internal friction size, than damping capacity P=2 π Q-1。
As a result as shown in figs. 4-7, wherein：
Fig. 4 is the in-fighting contrast schematic diagram of FeGa alloy materials under different quenching, be can be seen that in figure, is 30 in amplitude
×10-6, under conditions of 1Hz, (mutually there are warm areas for shortrange order) carries out quenching treatment in the range of 580-660 DEG C of hardening heat
The damping capacity of sample is apparently higher than the damping capacity on the temperature range both sides, wherein, the FeGa bases quenched by 580 DEG C
Sample, Internal friction is up to 0.031.
Fig. 5 is the contrast schematic diagram of in-fighting under FeGa alloy material short arcs under Different treatments, be can be seen that in figure,
(20-120 × 10 in the range of short arc-6), under conditions of 1Hz, sample (580 DEG C of hardening heat, similarly hereinafter) phase that the present invention is handled
1.5-3 times is promoted than original sample damping value, the Fe base high-damping material dampings value compared to prior heat treatment promotes 2-3.5 times；Its
In, 20 × 10-6, under conditions of 1Hz, the damping capacity of sample that the present invention is handled is not handled respectively by the present invention
2.25 and 4.5 times of the Fe base high-damping materials of FeGa and classics；
Fig. 6 is the FeGa alloys of the invention handled in -85-300 DEG C of in-fighting-temperature curves, it can be seen from the figure that, this hair
The sample damping value of daylight reason keeps stablizing at -85 DEG C -160 DEG C, does not change substantially with temperature；
Fig. 7 is FeGa alloy material yield strength contrast schematic diagrams under Different treatments, be can be seen that in figure, at entire heat
During reason, sample does not recrystallize, and the mechanical property of material does not decline；
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, can also be under the premise of this patent objective not be departed from the knowledge that one skilled in the relevant art has
Various changes can be made.
Claims (9)
1. a kind of heat treatment method of FeGa base high-damping alloys, which is characterized in that including：
Step 1：By FeGa base alloy materials hot and cold alternation cycle several times after, 800 DEG C keep the temperature 1h and more than；Alternatively, directly
By FeGa base alloy materials in 800 DEG C of continuous heat preservation more than 6h；
Step 2：It is vertical after heat preservation more than 0.5h by step 1 treated material slowly cools to shortrange order mutually there are warm area
Carry out quenching treatment.
2. the heat treatment method of a kind of FeGa base high-damping alloys according to claim 1, which is characterized in that described cold and hot
Alternate cycles are heated to 800 DEG C using FeGa base alloy materials and then are cooled to room temperature again as a cycle.
A kind of 3. heat treatment method of FeGa base high-damping alloys according to claim 1, which is characterized in that the step
One heating temperature-fall period is carried out with the rate of 120 DEG C/h.
A kind of 4. heat treatment method of FeGa base high-damping alloys according to claim 1, which is characterized in that the step
One hot and cold alternation cycle-index is 3-5 times.
A kind of 5. heat treatment method of FeGa base high-damping alloys according to claim 1, which is characterized in that the step
One continuous soaking time is 6h.
A kind of 6. heat treatment method of FeGa base high-damping alloys according to claim 1, which is characterized in that the step
Two slow cooling rates are less than 120 DEG C/h.
A kind of 7. heat treatment method of FeGa base high-damping alloys according to claim 1, which is characterized in that the step
In two, reduce the temperature to shortrange order by way of continuous cooling or staged cooling mutually there are warm areas.
A kind of 8. heat treatment method of FeGa base high-damping alloys according to claim 1, which is characterized in that the step
Two medium or short range ordered phases are 580-660 DEG C there are warm area.
A kind of 9. heat treatment method of FeGa base high-damping alloys according to claim 1, which is characterized in that the step
In two, the method for quenching treatment is handled for Water Quenching or oil quenching.
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| CN201810017905.8A CN108251622B (en) | 2018-01-09 | 2018-01-09 | A kind of heat treatment method of FeGa base high-damping alloy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112921244A (en) * | 2021-01-22 | 2021-06-08 | 中国科学院合肥物质科学研究院 | Fe-Ga-based alloy with high damping and zero magnetostriction characteristics and preparation method thereof |
| CN113791111A (en) * | 2021-08-06 | 2021-12-14 | 中国科学院合肥物质科学研究院 | Method for measuring recrystallization temperature by utilizing internal consumption of metal material |
| CN114672883A (en) * | 2022-03-21 | 2022-06-28 | 中国科学院合肥物质科学研究院 | Ferromagnetic alloy with high magneto-mechanical hysteresis damping performance and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921244A (en) * | 2021-01-22 | 2021-06-08 | 中国科学院合肥物质科学研究院 | Fe-Ga-based alloy with high damping and zero magnetostriction characteristics and preparation method thereof |
| CN112921244B (en) * | 2021-01-22 | 2021-11-23 | 中国科学院合肥物质科学研究院 | Fe-Ga-based alloy with high damping and zero magnetostriction characteristics and preparation method thereof |
| CN113791111A (en) * | 2021-08-06 | 2021-12-14 | 中国科学院合肥物质科学研究院 | Method for measuring recrystallization temperature by utilizing internal consumption of metal material |
| CN114672883A (en) * | 2022-03-21 | 2022-06-28 | 中国科学院合肥物质科学研究院 | Ferromagnetic alloy with high magneto-mechanical hysteresis damping performance and preparation method thereof |
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