CN107723458A - Heat treatment can reinforced aluminium alloy ag(e)ing process on-line monitoring method - Google Patents
Heat treatment can reinforced aluminium alloy ag(e)ing process on-line monitoring method Download PDFInfo
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- CN107723458A CN107723458A CN201711142006.2A CN201711142006A CN107723458A CN 107723458 A CN107723458 A CN 107723458A CN 201711142006 A CN201711142006 A CN 201711142006A CN 107723458 A CN107723458 A CN 107723458A
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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
- C21D11/00—Process control or regulation for heat treatments
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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
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
Abstract
The present invention relates to heat treatment can reinforced aluminium alloy ag(e)ing process on-line monitoring method, by first establish on treat Ageing Treatment heat treatment can reinforced aluminium alloy sample resistivity and corresponding mechanical property parameters between corresponding relation standard database；In follow-up industrial processes, compared by determining the resistivity of product, and with standard database, you can estimate under predetermined temperature increasing schedule, after Ageing Treatment certain time, acquisition heat treatment can reinforced aluminium alloy product corresponding mechanical property parameters.Using the method for the present invention, the effect of material ages can be monitored in real time in ag(e)ing process, obtain its mechanical property without sampling, sample preparation progress hardness or strength test after the completion for the treatment of timeliness, simply, effectively, quickly；The waste of energy consumption can be avoided；In addition, the method for existing sampling detection is destructive, for the product of non-machinable destruction, do not apply to.And this method is Non-Destructive Testing, material, strong applicability are not destroyed.
Description
Technical field
The present invention relates to technical field of metal heat treatment, be related to heat treatment can reinforced aluminium alloy ag(e)ing process on-line monitoring
Method, this method are particularly suitable for use in the on-line monitoring of Al-Mg-Si alloy section bar ag(e)ing process.
Background technology
6000 systems (Al-Mg-Si) aluminium alloy has good formability, good corrosion resistance, moderate strength, outward appearance beautiful, nontoxic
Pollution-free, the features such as solderability is good, recovery value is high, it is widely used, is recognized as in fields such as building, ship, road traffics
It is the ideal material of automotive light weight technology.Aluminum alloy materials pressure processing, shaping include the methods of casting, rolling, extruding, drawing.
The main alloy element of Al-Mg-Si alloy is Mg and Si, also adds a small amount of Cu or Mn elements in the alloy sometimes
To improve the mechanical property of alloy.Such alloy is heat-treatable strengthened aluminum alloy, and its final performance is to pass through ingot homogenization
Obtained with solution treatment, quenching and artificial aging or natrual ageing.Quenching refers to cast, extruded, the section bar warp after rolling
More than 500 degrees Celsius quick coolings, obtain supersaturated solid solution.Timeliness is being heated to as last one of material manufacturing procedure
After 150~200 degrees Celsius (actual temp is relevant with alloy content) keeps 6-8h, the material property finally needed is obtained.Timeliness
Main purpose be allow solid solution atom occur evolution reaction, formed the second phase, so as to play a part of precipitation strength.Such as Al-
Each phase heat treatment, physical process, the relation of performance change of the production process of Mg-Si alloy profiles are as follows：
Technical process：1) solution heat treatment --- 2) quench --- 3) stacking (natrual ageing) --- 4) artificial aging；
Physical process：1) alloying element forms solid solution in the base --- 2) rapidly cool to form super saturated solid solution
Body --- 3) forming cluster, the precipitated phase such as GP areas --- 4) formed " or "+' precipitated phase；
Performance change process：1) homogenize --- solution strengthening 2) is formed, intensity, hardness are more slightly higher than ingot casting --- it is 3) strong
Degree, hardness improve, and reach T4 state mechanical properties --- and 4) intensity, hardness significantly improve, and reach T6 state mechanical properties；
By taking Al-Mg-Si alloy section bar as an example, its technical process produced is：1) casting rod heats, solution treatment --- 2) exist
--- --- 4) shaping, sawing --- 5) being stacked by productive temp --- are 6) in timeliness for 3) press quenching for hot extrusion on extruder
Ageing Treatment --- to mechanical property sampling Detection (hardness, stretching, electrical conductivity test etc.) after 7) cooling down --- 8 is heated in stove)
Packaging, dispatches from the factory.
But in the production process of reality, due to stacking of the product in aging furnace, equipment is unstable, aging furnace temperature field
The reason such as uneven, the sampling observation underproof problem of mechanical property often occurs, need to produce product or part in such cases
Product are re-fed into heating in aging furnace and carry out added time effect or again timeliness.That is the timeliness effect of product can not monitor in real time, need
Come out of the stove to examine after cooling down and just can determine that, so one time, need to repeatedly cool down, heat, consumption of calorie is big, and process time also becomes
Obtain longer, reduction industrial production efficiency.
The content of the invention
In view of the shortcomings of the prior art, the present invention provide a kind of heat treatment can reinforced aluminium alloy ag(e)ing process on-line monitoring
Method, the technical problem of timeliness effect of the alloy product in ag(e)ing process must not be monitored in real time with solution, by monitoring in real time
Judge whether alloy reaches the mechanical property of peak value timeliness, shorten productive temp, reduce repetitive process.
In order to solve the above-mentioned technical problem, technical scheme is as follows：Heat treatment can reinforced aluminium alloy ag(e)ing process
On-line monitoring method, comprise the following steps：
S1, take treat Ageing Treatment heat treatment can reinforced aluminium alloy sample, be placed in aging furnace, by predetermined temperature increasing schedule liter
Temperature, Ageing Treatment T1After time, measurement heat treatment can reinforced aluminium alloy sample electricalresistivityρ1, after measurement, at the heat
Reason can reinforced aluminium alloy sample taken out out of aging furnace, be cooled to room temperature, measurement heat treatment can reinforced aluminium alloy sample mechanical property
Can, obtain T1Under time, heat treatment can reinforced aluminium alloy sample electricalresistivityρ1With corresponding mechanical property parameters；
Wherein, mechanical property parameters include microhardness, tensile strength, yield strength and one kind in rate elongation of having no progeny or
It is a variety of；
S2, only change aging time in the case of, repeat step S1 process, obtain T2Under time, heat treatment
Can reinforced aluminium alloy sample electricalresistivityρ2With corresponding mechanical property parameters；Change aging time, repeat step S1 mistake
Journey, obtain T3Under time, the electricalresistivityρ of Al-Mg-Si alloy sample3With corresponding mechanical property parameters；……；Change at timeliness
Manage the time, repeat step S1 process, obtain TnUnder time, heat treatment can reinforced aluminium alloy sample electricalresistivityρnAnd corresponding force
Learn performance parameter；Wherein, n is integer not less than 2, T1、T2、T3、……、TnIncrease successively；
S3, establish on treat Ageing Treatment heat treatment can resistivity and the corresponding mechanical property of reinforced aluminium alloy sample join
The standard database of corresponding relation between number；
S4, by step S1 predetermined temperature increasing schedule heat up, pair with step S1 in heat treatment can reinforced aluminium alloy sample into
The heat treatment of point identical can reinforced aluminium alloy product carry out Ageing Treatment, Ageing Treatment T0After time, measurement heat treatment can be strengthened
The electricalresistivityρ of alloy product0；
S5, the electricalresistivityρ that will be measured in step S40It is compared, estimates pre- with the standard database established in step S3
Determine under temperature increasing schedule, Ageing Treatment T0During the time, acquisition heat treatment can reinforced aluminium alloy product corresponding mechanical property ginseng
Number.
Using such method, predetermined temperature increasing schedule is first established (in fact, every kind of temperature increasing schedule can all regard a kind of timeliness as
Processing method) under the conditions of, certain pending heat treatment can reinforced aluminium alloy sample resistivity and corresponding mechanical property parameters
Between corresponding relation standard database, the standard database one is set up, you can at all the components identical heat
Reason can reinforced aluminium alloy product ag(e)ing process under the conditions of corresponding temperature increasing schedule monitoring, only need to measure sometime under the conditions of
Heat treatment can reinforced aluminium alloy electricalresistivityρ0If by comparison can estimate now will heat treatment can reinforced aluminium alloy from when
Imitate stove in take out, finally obtain heat treatment can reinforced aluminium alloy product mechanical property, so as to determine whether to continue
Ageing Treatment, or also need to continue Ageing Treatment how long, it can just obtain the optimal product of mechanical property.
Further, the heat treatment can reinforced aluminium alloy sample and heat treatment can reinforced aluminium alloy product can be of the same race
Section bar.
Further, the electricalresistivityρnMeasurement process comprise the following steps：
(1) using DC four point probe method measurement TnUnder time, heat treatment can the multiple measurement length bars of reinforced aluminium alloy sample
Resistance value under part, obtain measured value RL1、RL2、……、RLm；
(2) according to formula RLm=ρnLm/S+Rs, linear fit is carried out, obtains TnHeat treatment can reinforced aluminium alloy under time
The electricalresistivityρ of samplen；
Wherein, LmTo measure length, RsFor system resistance, S is the cross-sectional area of sample, and m is the integer not less than 2.
M represents the resistance value under the conditions of m measurement length of measurement in step (1).
RsThe predominantly loop resistance sum of the contact resistance of electrode and sample and wire and instrument, in same test temperature
It is fixed value that degree is lower.
Further, in step (1), measure it is a certain measurement length under the conditions of resistance when, along the zone length direction according to
Four electrodes of secondary setting, the electric current of 80-120mA sizes is inputted on outermost two electrodes, measure two electrodes of inner side
Between voltage, conversion obtains measurement resistance value RLm。
Preferably, the electrode is made up of aluminium, copper or its alloy material.
Further, heat treatment can reinforced aluminium alloy product electricalresistivityρ0Also can measure in aforementioned manners.
As another scheme of the present invention, heat treatment can reinforced aluminium alloy ag(e)ing process on-line monitoring method, it is special
Sign is, comprises the following steps：
S1, take treat Ageing Treatment heat treatment can reinforced aluminium alloy product, be placed in aging furnace, by predetermined temperature increasing schedule liter
Temperature, Ageing Treatment T1After time, measurement heat treatment can a certain length areas of reinforced aluminium alloy product resistance R1, measurement finishes
Afterwards, by the heat treatment can reinforced aluminium alloy product taken out out of aging furnace, be cooled to room temperature, measurement heat treatment can reinforced aluminum close
Golden product mechanical property, obtain T1Under time, heat treatment can a certain length areas of reinforced aluminium alloy gold product resistance R1And phase
Answer resistance R1Lower mechanical property parameters；
Wherein, mechanical property parameters include microhardness, tensile strength, yield strength and one kind in rate elongation of having no progeny or
It is a variety of；
S2, only change aging time in the case of, repeat step S1 process, obtain T2Under time, heat treatment
Can the same length areas of reinforced aluminium alloy product resistance R2With corresponding resistor R2Lower mechanical property parameters；When changing Ageing Treatment
Between, repeat step S1 process, obtain T3Under time, heat treatment can the same length areas of reinforced aluminium alloy product resistance R3With
Corresponding resistor R3Lower mechanical property parameters；……；Change aging time, repeat step S1 process, obtain TnUnder time,
Heat treatment can the same length areas of reinforced aluminium alloy product resistance RnWith corresponding resistor RnUnder mechanical property parameters；Wherein, n
For the integer not less than 2, T1、T2、T3、……、TnIncrease successively；
S3, establish on treat Ageing Treatment heat treatment can the reinforced aluminium alloy product length areas resistance and corresponding force
Learn the standard database of the corresponding relation between performance parameter；
S4, heat up by the predetermined temperature increasing schedule in step S1, pair can reinforced aluminium alloy with heat treatment same in step S1
Product carries out Ageing Treatment, Ageing Treatment T0After time, measurement heat treatment can reinforced aluminium alloy product in above-mentioned length areas
Resistance R0；
S5, the resistance R that will be measured in step S40It is compared, estimates predetermined with the standard database established in step S3
Under temperature increasing schedule, Ageing Treatment T0Time, acquisition heat treatment can reinforced aluminium alloy product corresponding mechanical property parameters.
During using this method, the resistance of a certain length areas need to be only measured, then the standard database with foundation compares i.e.
Can.But heat treatment can the heat treatment that monitors of reinforced aluminium alloy product and subsequently needing in the standard database that need to ensure to establish
Can reinforced aluminium alloy product be identical product, composition, shape, size are consistent, and measure length it is consistent, standard can be obtained
True estimation results.Generally for any product when not producing, its sectional area is all when design
Know, according to resistance and the relational expression of resistivity, can also calculate corresponding resistor rate.In fact, general enterprises have formulated enterprise
If standard, the composition of the specific trade mark is substantially fixed.
Further, the heat treatment can reinforced aluminium alloy product be heat treatment can reinforced aluminium alloy section bar.
Further, then the predetermined temperature increasing schedule is incubated 2-40h for being first warming up to 170-180 DEG C in 0-1.5h.
Further, the heat treatment can reinforced aluminium alloy include made of Al-Cu alloy, Al-Mg-Si alloy, Al-Zn-Mg close
Gold.
For Al-Mg-Si alloy, when carrying out solution heat treatment, the atom of alloying element is dissolved into aluminum substrate；Subsequent
In parking period, natrual ageing occurs, forms cluster or GP areas, resistance value is increased slightly.Artificial aging is carried out again, due to molten
Matter atom is reacted to form the second phase, and electron scattering, which is acted on, to be reduced, and its resistance is decreased obviously.It is main before peak value is reached
Separate out be changed into for " precipitated phase, further extending aging time, " precipitated phase ', and the size of two kinds of phases is gradually grown up, but right
The contribution margin of resistance reduces.The change of resistance can reflect the change of alloy material resistivity, and the change of resistivity is corresponding
The change that material is organized in itself, the change of material structure correspond to the change of material mechanical performance.Therefore the present invention pass through by
Resistivity is mapped with the mechanical property of alloy material, is readily available accurate estimation results.
During practical engineering application, can will heat treatment can reinforced aluminium alloy product load aging furnace while, will
Resistance measurement electrode is linked into alloy product surface, and uses computer data acquisition, while inputs its sectional area and measurement length
Degree, and works out relative program and the resistance signal gathered is converted into resistivity value, by computer automatically and standard database
Compare, quick to obtain under corresponding conditionses, mechanical property discreet value.Correspondingly, multigroup measuring electrode can be also set simultaneously, with same
When obtain resistance values under different measurement length, and then obtain by linear fit the resistivity value under the conditions of this.Can also,
System resistance under measurement temperature, the cross-sectional area of product and measurement length are first measured, then according to the resistance value measured simultaneously
With reference to formula R=ρ L/S+R, you can calculate and obtain resistivity value.These processes can be easily real by working out simple program
It is existing.
Compared with prior art, beneficial effects of the present invention are as follows：
1) this method is used, the effect of material ages can be monitored in real time in ag(e)ing process, without after the completion for the treatment of timeliness
Sampling, sample preparation carry out hardness or strength test obtains its mechanical property, simply, effectively, quickly.
2) according to existing technology, if timeliness caused by generation non-uniform temperature or shove charge are unreasonable in production process is not filled
After point, it is necessary to which product is detected one by one, it is re-fed into aging furnace and heats up again heating timeliness, consume needed for excessive production
Energy consumption.Using this method, the waste of energy consumption can be avoided.
3) method of existing sampling detection is destructive, for the product of non-machinable destruction, not apply to.And this method
For Non-Destructive Testing, material, strong applicability are not destroyed.
Brief description of the drawings
Fig. 1 is a kind of resistance measurement principle schematic of the present invention.
Fig. 2 is that the 6063 section bar samples of the invention resistivity in ag(e)ing process under the conditions of 175 DEG C changes over time relation
Figure.
Fig. 3 is that the 6063 section bar samples of the invention microhardness in ag(e)ing process under the conditions of 175 DEG C changes over time pass
System's figure.
Fig. 4 be the present invention 6063 section bar samples in ag(e)ing process under the conditions of 175 DEG C tensile strength, yield strength and
Elongation after fracture changes over time graph of a relation.
Embodiment
Embodiment 1
The present embodiment further illustrates that the thickness of sample of selection is 4mm by taking 6063 section bars as an example to present invention expansion, chemistry
Composition is as shown in table 1.Artificial aging is carried out at 175 DEG C, and temperature is measured by K-type thermocouple, the F2 processed on sample
In × 2mm holes.The resistance of sample ag(e)ing process is measured on self-control nanovolt meter using DC four point probe method, and its measuring principle is such as
Shown in Fig. 1.4 electrodes are diameter 0.6mm fine aluminiums used in measurement, and plaques surface is fixed on by spot welding.By outermost 2
Individual electrode inputs 100mA electric currents, and by middle 2 electrode measurement voltages, convert output resistance.Resistance measurement precision be 0.1 ×
10-9Ω.Stretching experiment is carried out on the universal electrical tensile testing machines of Instron 8032, and hardness test is in HXD-1000T Vickers
Hardometer is carried out, and load 1kgf, takes 5 groups of sample means.Metallographic microstructure passes through observation by light microscope.
The chemical composition (wt%) of the section bar sample of table 1. 6063
| Element | Si | Fe | Cu | Mn | Mg | Cr | Ti | Al |
| 6063 | 0.46 | 0.32 | 0.02 | 0.02 | 0.47 | 0.02 | 0.01 | Surplus |
The on-line monitoring method of above-mentioned Al-Mg-Si alloy ag(e)ing process, comprises the following steps：
S1, the 6063 section bar samples for treating Ageing Treatment are taken, be placed in aging furnace, heated up by predetermined temperature increasing schedule, at timeliness
Manage T1After time, the electricalresistivityρ of 6063 section bar samples is measured1, after measurement, the 6063 section bar sample is taken out of aging furnace
Go out, be cooled to room temperature, measure 6063 section bar sample mechanical properties, obtain T1Under time, the electricalresistivityρ of 6063 section bar samples1With
Corresponding mechanical property parameters；
Wherein, mechanical property parameters include microhardness, tensile strength, yield strength and rate elongation of having no progeny；
S2, only change aging time in the case of, repeat step S1 process, obtain T2Under time, 6063 types
The electricalresistivityρ of material sample2With corresponding mechanical property parameters；Change aging time, repeat step S1 process, obtain T3When
Between under, the electricalresistivityρ of 6063 section bar samples3With corresponding mechanical property parameters；……；Change aging time, repeat step
S1 process, obtain TnUnder time, the electricalresistivityρ of 6063 section bar samplesnWith corresponding mechanical property parameters；Wherein, n be not less than
2 integer, T1、T2、T3、……、TnIncrease successively, every time experiment, Tn-1And TnBetween interval can moderately adjust as needed,
In order to improve accuracy, it can rationally reduce the interval；
S3, establish and closed on corresponding between the resistivity of 6063 section bars for the treatment of Ageing Treatment and corresponding mechanical property parameters
The standard database of system；
S4, by step S1 predetermined temperature increasing schedule heat up, pair with step S1 in 6063 section bar composition identical Al-Mg-
Si alloy products carry out Ageing Treatment, Ageing Treatment T0After time, the electricalresistivityρ of Al-Mg-Si alloy product is measured0；
S5, the electricalresistivityρ that will be measured in step S40It is compared, estimates pre- with the standard database established in step S3
Determine under temperature increasing schedule, Ageing Treatment T0Time, the corresponding mechanical property parameters of the Al-Mg-Si alloy product of acquisition.
Wherein, the measurement process of resistivity is：First using DC four point probe method measurement TnUnder time, 6063 section bar samples are more
Resistance value under the conditions of individual measurement length, obtain measured value RL1、RL2、……、RLm；According to formula RLm=ρnLm/S+Rs, carry out
Linear fit, obtain TnThe electricalresistivityρ of 6063 section bar samples under timen；Wherein, Lm is to measure length, RsFor system resistance, S
For the cross-sectional area of sample, m is the integer not less than 2.The electricalresistivityρ of Al-Mg-Si alloy product0Measurement also can use should
The method that process is shown.
Fig. 2 to Fig. 4 illustrates 6063 section bar sample resistivities in the present embodiment, microhardness, tensile strength, surrender by force
Spend and variation relation figure of the rate elongation with aging time of having no progeny, correspondingly, resistivity and microhardness, anti-can be established accordingly
Corresponding relation database between tensile strength, yield strength and rate elongation of having no progeny, in follow-up industrial production, only need real-time
Monitor the change in resistance situation of corresponding product, you can the situation of change of related mechanical property is estimated out, so as to judge at timeliness
Reason situation, reference is provided for operating personnel.
The content that above-described embodiment illustrates should be understood to that these embodiments are only used for being illustrated more clearly that the present invention, without
For limiting the scope of the present invention, after the present invention has been read, the various equivalent form of values of the those skilled in the art to the present invention
Modification each fall within the application appended claims limited range.
Claims (8)
1. heat treatment can reinforced aluminium alloy ag(e)ing process on-line monitoring method, it is characterised in that comprise the following steps：
S1, take treat Ageing Treatment heat treatment can reinforced aluminium alloy sample, be placed in aging furnace, by predetermined temperature increasing schedule heat up,
Ageing Treatment T1After time, measurement heat treatment can reinforced aluminium alloy sample electricalresistivityρ1, can by the heat treatment after measurement
Reinforced aluminium alloy sample takes out out of aging furnace, is cooled to room temperature, measurement heat treatment can reinforced aluminium alloy sample mechanical property, obtain
Obtain T1Under time, heat treatment can reinforced aluminium alloy sample electricalresistivityρ1With corresponding mechanical property parameters；
Wherein, mechanical property parameters include microhardness, tensile strength, yield strength and one kind or more in rate elongation of having no progeny
Kind；
S2, only change aging time in the case of, repeat step S1 process, obtain T2Under time, heat treatment can be strengthened
The electricalresistivityρ of aluminum alloy sample2With corresponding mechanical property parameters；Change aging time, repeat step S1 process, obtain
T3Under time, the electricalresistivityρ of Al-Mg-Si alloy sample3With corresponding mechanical property parameters；……；Change aging time, weight
Multiple step S1 process, obtains TnUnder time, heat treatment can reinforced aluminium alloy sample electricalresistivityρnJoin with corresponding mechanical property
Number；Wherein, n is integer not less than 2, T1、T2、T3、……、TnIncrease successively；
S3, establish on treat Ageing Treatment heat treatment can reinforced aluminium alloy sample resistivity and corresponding mechanical property parameters it
Between corresponding relation standard database；
S4, by step S1 predetermined temperature increasing schedule heat up, pair with step S1 be heat-treated can reinforced aluminium alloy sample composition phase
With heat treatment can reinforced aluminium alloy product carry out Ageing Treatment, Ageing Treatment T0After time, measurement heat treatment can reinforced aluminum conjunction
The electricalresistivityρ of golden product0；
S5, the electricalresistivityρ that will be measured in step S40It is compared with the standard database established in step S3, estimates predetermined heating
Under system, Ageing Treatment T0During the time, acquisition heat treatment can reinforced aluminium alloy product corresponding mechanical property parameters.
2. on-line monitoring method according to claim 1, it is characterised in that the measurement process of the resistivity includes as follows
Step：
（1）T is measured using DC four point probe methodnUnder time, heat treatment can reinforced aluminium alloy sample it is multiple measurement length under the conditions of
Resistance value, obtain measured value RL1、RL2、……、RLm；
（2）According to formula RLm=ρnLm/S+Rs, linear fit is carried out, obtains TnHeat treatment can reinforced aluminium alloy sample under time
Electricalresistivityρn；
Wherein, LmTo measure length, RsFor system resistance, S is the cross-sectional area of sample, and m is the integer not less than 2.
3. on-line monitoring method according to claim 2, it is characterised in that step（1）In, measure a certain length areas bar
During resistance under part, four electrodes are set gradually along the zone length direction, 80- is inputted on outermost two electrodes
The electric current of 120mA sizes, measures two interelectrode voltages of inner side, and conversion obtains measurement resistance value RLm。
4. on-line monitoring method according to claim 3, it is characterised in that the electrode is by aluminium, copper or its alloy material
It is made.
5. heat treatment can reinforced aluminium alloy ag(e)ing process on-line monitoring method, it is characterised in that comprise the following steps：
S1, take treat Ageing Treatment heat treatment can reinforced aluminium alloy product, be placed in aging furnace, by predetermined temperature increasing schedule heat up,
Ageing Treatment T1After time, measurement heat treatment can a certain length areas of reinforced aluminium alloy product resistance R1, will after measurement
The heat treatment can reinforced aluminium alloy product taken out out of aging furnace, be cooled to room temperature, measurement heat treatment can reinforced aluminium alloy product
Mechanical property, obtain T1Under time, heat treatment can a certain length areas of reinforced aluminium alloy gold product resistance R1With corresponding resistor R1
Lower mechanical property parameters；
Wherein, mechanical property parameters include microhardness, tensile strength, yield strength and one kind or more in rate elongation of having no progeny
Kind；
S2, only change aging time in the case of, repeat step S1 process, obtain T2Under time, heat treatment can be strengthened
The resistance R of the same length areas of alloy product2With corresponding resistor R2Lower mechanical property parameters；Change aging time, repeat
Step S1 process, obtain T3Under time, heat treatment can the same length areas of reinforced aluminium alloy product resistance R3And corresponding resistor
R3Lower mechanical property parameters；……；Change aging time, repeat step S1 process, obtain TnUnder time, heat treatment can
The resistance R of the same length areas of reinforced aluminium alloy productnWith corresponding resistor RnUnder mechanical property parameters；Wherein, n be not less than
2 integer, T1、T2、T3、……、TnIncrease successively；
S3, establish on treat Ageing Treatment heat treatment can the reinforced aluminium alloy product length areas resistance and corresponding mechanical property
The standard database of corresponding relation between energy parameter；
S4, heat up by the predetermined temperature increasing schedule in step S1, pair can reinforced aluminium alloy product with heat treatment same in step S1
Carry out Ageing Treatment, Ageing Treatment T0After time, measurement heat treatment can reinforced aluminium alloy product above-mentioned length areas resistance
R0；
S5, the resistance R that will be measured in step S40It is compared with the standard database established in step S3, estimates predetermined heating system
Under degree, Ageing Treatment T0Time, acquisition heat treatment can reinforced aluminium alloy product corresponding mechanical property parameters.
6. on-line monitoring method according to claim 1 or 5, it is characterised in that the heat treatment can reinforced aluminium alloy production
Product are that heat treatment can reinforced aluminium alloy section bar.
7. on-line monitoring method according to claim 1 or 5, it is characterised in that the predetermined temperature increasing schedule is first in 0-
170-180 DEG C is warming up in 1.5h, is then incubated 2-40h.
8. according to the on-line monitoring method described in claim any one of 1-5, it is characterised in that the heat treatment can reinforced aluminum conjunction
Gold includes made of Al-Cu alloy, Al-Mg-Si alloy, Al-Zn-Mg alloy.
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| CN112831651A (en) * | 2019-11-22 | 2021-05-25 | 中南大学 | Method for regulating and controlling heat treatment based on in-situ acquisition information and application |
| CN113528991A (en) * | 2021-08-02 | 2021-10-22 | 重庆大学 | Quick aging process method of aluminum alloy plate and intelligent control system thereof |
| CN114250377A (en) * | 2021-12-24 | 2022-03-29 | 四川久达新材料科技有限公司 | Method for prejudging aging strength of high-strength aluminum alloy |
| CN115572923A (en) * | 2022-09-09 | 2023-01-06 | 北京航空航天大学 | Method for obtaining non-isothermal aging system of aluminum alloy based on in-situ resistance measurement |
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