CN108251622B - A kind of heat treatment method of FeGa base high-damping alloy - Google Patents
A kind of heat treatment method of FeGa base high-damping alloy Download PDFInfo
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- CN108251622B CN108251622B CN201810017905.8A CN201810017905A CN108251622B CN 108251622 B CN108251622 B CN 108251622B CN 201810017905 A CN201810017905 A CN 201810017905A CN 108251622 B CN108251622 B CN 108251622B
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- C—CHEMISTRY; METALLURGY
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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
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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
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Abstract
The invention discloses a kind of heat treatment methods of FeGa base high-damping alloy, this method eliminates the defect of material internal by pretreatment, then 800 DEG C are heated to the heating rate of 120 DEG C/h, keep the temperature 1h, it is furnace-cooled to 580-660 DEG C with the rate of 120 DEG C/h, 0.5h is kept the temperature, keeps material internal temperature uniform, order disorder transition phase transformation sufficiently carries out, and is finally quenched.Compared with existing heat treatment process, which can greatly improve under short arc (≤120 × 10‑6) the intrinsic damping capacity of material, original sample is compared, damping value promotes 1.5-3 times；Fe base high-damping material damping value compared to prior heat treatment promotes 2-3.5 times.Meanwhile the advantages of technique, is what entire heat treatment process carried out below recrystallization temperature, almost without the mechanical property for damaging material while significantly promoting 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 alloy
Processing method.
Background technique
In recent years, FeGa based alloy 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 become the source of high damping properties.The alloys such as traditional Fe base high-damping material such as FeCr base, FeAl base, FeMo base
Mainly by soak and the cold mode of furnace, crystallite dimension is made to grow up, internal stress reduces, thus be conducive to magnetic domain rotation and
Migration, promotes the damping capacity of alloy, such as FeCr based alloy, and the optimal heat treatment mode for obtaining high damping properties at present is
In 1100 DEG C of heat preservation 1h, and furnace is cold.Currently, the heat treatment process of FeGa based alloy, 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 passing through high temperature
The mode for keeping the temperature the simultaneously cold mode of furnace or high temperature quenching, cannot all be such that FeGa based alloy damping capacity is obviously improved, and compare
Other Fe based alloys do not have apparent advantage yet, opposite, high-temperature heat treatment, which is carried out, more than recrystallization temperature results in
The mechanical property of FeGa based alloy significantly reduces, and limits its scope of application.Therefore, (do not occur again not damaging mechanical property
Crystallization) under the premise of, design the heat treatment process of FeGa based alloy from completely new angle to greatly improve its damping capacity,
It is most important to the application range of broadening FeGa based alloy.
Summary of the invention
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 alloy
Method, to solve the technical issues of existing heat treatment process can not be such that FeGa based alloy damping capacity is obviously improved.
To achieve the above object, the invention provides the following technical scheme:
The present invention provides a kind of heat treatment methods of FeGa base high-damping alloy, comprising:
Step 1: by hot and cold alternation endless form, after FeGa base alloy material hot and cold alternation is recycled several times,
800 DEG C of heat preservation 1h or more；Alternatively, directly by FeGa base alloy material in 800 DEG C of continuous heat preservation 6h or more；By pretreatment temperature
Control is at 800 DEG C, in the case where being no more than recrystallization temperature, greatly limit can guarantee material internal defect and internal internal stress
It is eliminated；
Step 2: by step 1, treated that material slowly cools to that shortrange order mutually has 580-660 DEG C of warm area, heat preservation
0.5h or more, with guarantee material internal order-disorder reaction sufficiently carry out, after be quenched 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 guarantees that treated has the promotion of matter.
The hot and cold alternation circulation of the step 1 is heated to 800 DEG C and then is cooled to room temperature again with FeGa base alloy material
One circulation.
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
Treatment process 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 recycling 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 and treatment 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 lower than 120 DEG C/h is carried out, and cooling rate is slower, material internal
Heated more uniform, order-disorder reaction is more abundant.
In the step 2, shortrange order is reduced the temperature to by way of continuous cooling or staged cooling and is mutually existed
Warm area (580-660 DEG C).
In the step 2, the method for quenching treatment is that Water Quenching or oil quenching are handled.
The present invention has the advantage that compared with prior art
1. damping is high: the alloy sample handled by this method, (20-120 × 10 within the scope of short arc-6), the item of 1Hz
Under part, damping capacity is substantially improved: comparing original sample, damping value promotes 1.5-3 times；Compared to the Fe base high-damping of prior heat treatment
Material damping value promotes 2-3.5 times；
2. wide temperature range: damping value is stablized in -85 DEG C of -160 DEG C of holdings, does not change substantially with temperature；Compared to other non-Fe
Base high-damping material has broader application range.
3. sample does not recrystallize in entire heat treatment process, the mechanical property of material does not decline.
4. Internal friction is 30 × 10 in amplitude by 580 DEG C of FeGa based specimens quenched-6, can under conditions of 1Hz
Up to 0.031.
Detailed description of the invention
Fig. 1 is 1 heat treatment process schematic diagram based on the embodiment of the present invention；
Fig. 2 is 2 heat treatment process schematic diagram based on the embodiment of the present invention；
Fig. 3 is 3 heat treatment process schematic diagram based on the embodiment of the present invention；
Fig. 4 is the interior of quenching treatment outside the FeGa alloy being quenched within the scope of hardening heat through the invention and range
Consume contrast schematic diagram；
Fig. 5 is the FeGa alloy handled by the method for the invention and the FeGa and classics that do not handle by the method for the invention
FeCrAl high damping material short arc under in-fighting contrast schematic diagram；
Fig. 6 is the FeGa alloy that handles by the method for the invention in -85-300 DEG C of in-fighting-temperature curves；
Fig. 7 is that the FeGa alloy handled by the method for the invention and the FeGa alloy not handled by the method for the invention are surrendered
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 scope 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 alloy, as shown in Figure 1, include with
Lower step:
(1) it pre-processes: alloy sample being 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, being added with the heating rate of 120 DEG C/h
Heat keeps the temperature 1h to 800 DEG C；
(3) furnace cold treatment: carrying out cooling processing by the alloy sample of heat treatment, and 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) be quenched: the sample by keeping the temperature 0.5h at 640 DEG C carries out rapidly Water Quenching, is cooled to room temperature.
Embodiment 2
Present embodiments provide a kind of heat treatment method of wide temperature zone high damping FeGa based alloy, as shown in Fig. 2, include 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 cold treatment: carrying out cooling processing by the alloy sample of heat treatment, and rate of temperature fall is 90 DEG C/h, works as temperature
620 DEG C are dropped to, 1h is kept the temperature；
(3) it is quenched: the sample for keeping the temperature 1h at 620 DEG C being subjected to rapidly Water Quenching, is cooled to room temperature.
Embodiment 3
A kind of heat treatment method of FeGa base high-damping alloy is present embodiments provided, as shown in figure 3, including following step
It is rapid:
(1) FeGa base alloy material is 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 furnace with the rate of 120 DEG C/h, such circulation recycles 4 times, altogether to reduce material
Internal stress；
(2) heat: in Tubular thermal treatment furnace, under the protective atmosphere of Ar gas, being added with the heating rate of 120 DEG C/h
Heat keeps the temperature 1h to 800 DEG C；
(3) 450-750 DEG C of a certain temperature furnace cold treatment: is cooled to the rate of 90 DEG C/h by the alloy sample of heat treatment
Degree keeps the temperature 0.5h.
(4) it is quenched: 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, in which: Internal Friction Meter pair is rocked using multifunction pouring
FeGa based alloy sample damping capacity characterization measures under different disposal method；Using forced vibration mode to different disposal side
FeGa based alloy 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 within the scope 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, in which:
Fig. 4 is the in-fighting contrast schematic diagram of FeGa alloy material under different quenching, be can be seen that in figure, is 30 in amplitude
×10-6, under conditions of 1Hz, (shortrange order mutually has warm area) is quenched within the scope 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 base 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 arc under Different treatments, be can be seen that in figure,
(20-120 × 10 within the scope 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 damping value compared to prior heat treatment promotes 2-3.5 times；Its
In, 20 × 10-6, under conditions of 1Hz, the damping capacity for the sample that the present invention is handled is not handled through the invention respectively
2.25 and 4.5 times of the Fe base high-damping material of FeGa and classics；
Fig. 6 is that the FeGa alloy that the present invention is handled can be seen that this hair in -85-300 DEG C of in-fighting-temperature curves, figure
The sample damping value of daylight reason is stablized in -85 DEG C of -160 DEG C of holdings, does not change substantially with temperature；
Fig. 7 is FeGa alloy material yield strength contrast schematic diagram under Different treatments, be can be seen that in figure, at entire heat
During reason, sample is not recrystallized, and the mechanical property of material does not decline；
The preferred embodiment of the patent is described in detail above, but this patent is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be under the premise of not departing from this patent objective
Various changes can be made.
Claims (6)
1. a kind of heat treatment method of FeGa base high-damping alloy characterized by comprising
Step 1: after FeGa base alloy material hot and cold alternation is recycled several times, in 800 DEG C of heat preservation 1h or more；Alternatively, directly
By FeGa base alloy material in 800 DEG C of continuous heat preservation 6h or more；The hot and cold alternation circulation is heated to FeGa base alloy material
Then it is a circulation that 800 DEG C are cooled to room temperature again；
Step 2: step 1 treated material is reduced the temperature into short distance by way of continuous cooling or staged cooling
There are warm areas for ordered phase, are quenched immediately after keeping the temperature 0.5h or more, and it is 580-660 that the shortrange order, which mutually has warm area,
℃。
2. a kind of heat treatment method of FeGa base high-damping alloy 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.
3. a kind of heat treatment method of FeGa base high-damping alloy according to claim 1, which is characterized in that the step
One hot and cold alternation cycle-index is 3-5 times.
4. a kind of heat treatment method of FeGa base high-damping alloy according to claim 1, which is characterized in that the step
One continuous soaking time is 6h.
5. a kind of heat treatment method of FeGa base high-damping alloy according to claim 1, which is characterized in that the step
Two slow cooling rates are lower than 120 DEG C/h.
6. a kind of heat treatment method of FeGa base high-damping alloy according to claim 1, which is characterized in that the step
In two, the method for quenching treatment is that Water Quenching or oil quenching are handled.
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| 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 |
| CN113791111B (en) * | 2021-08-06 | 2023-06-30 | 中国科学院合肥物质科学研究院 | Method for measuring recrystallization temperature by using internal consumption of metal material |
| CN114672883B (en) * | 2022-03-21 | 2023-03-28 | 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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| CN1392616A (en) * | 2002-05-17 | 2003-01-22 | 北京科技大学 | Fe-Ga series magnetostriction material and its producing process |
| CN101086912A (en) * | 2007-04-24 | 2007-12-12 | 包头稀土研究院 | A FeGa-RE magnetic-driven flexible materials and its making technology |
| CN103556046A (en) * | 2013-11-13 | 2014-02-05 | 北京科技大学 | Fe-Ga based sheet material with high magnetostriction coefficient and preparation method thereof |
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Patent Citations (4)
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|---|---|---|---|---|
| US4244754A (en) * | 1975-07-05 | 1981-01-13 | The Foundation: The Research Institute Of Electric And Magnetic Alloys | Process for producing high damping capacity alloy and product |
| CN1392616A (en) * | 2002-05-17 | 2003-01-22 | 北京科技大学 | Fe-Ga series magnetostriction material and its producing process |
| CN101086912A (en) * | 2007-04-24 | 2007-12-12 | 包头稀土研究院 | A FeGa-RE magnetic-driven flexible materials and its making technology |
| CN103556046A (en) * | 2013-11-13 | 2014-02-05 | 北京科技大学 | Fe-Ga based sheet material with high magnetostriction coefficient and preparation method thereof |
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