CN106404656A - Method for determining stress-induced martensitic transformation critical point of shape memory alloy composite damping material - Google Patents
Method for determining stress-induced martensitic transformation critical point of shape memory alloy composite damping material Download PDFInfo
- Publication number
- CN106404656A CN106404656A CN201610831405.9A CN201610831405A CN106404656A CN 106404656 A CN106404656 A CN 106404656A CN 201610831405 A CN201610831405 A CN 201610831405A CN 106404656 A CN106404656 A CN 106404656A
- Authority
- CN
- China
- Prior art keywords
- critical point
- strain
- stress
- damping material
- sample
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a method for determining a stress-induced martensitic transformation critical point of a shape memory alloy composite damping material. A reverse martensitic phase transformation finish temperature Af of a sample is determined through a differential thermal scanning thermal analysis method; the internal friction-strain spectrum of the sample is measured at the temperature higher than the reverse martensitic phase transformation finish temperature Af by means of a dynamic mechanical analyzer; finally, the critical point with the remarkably increasing inner friction in the internal friction-strain spectrum is analyzed through the tangent method, the critical point is the stress-induced martensitic transformation critical point of the shape memory alloy composite damping material, and corresponding strain is stress-induced martensitic transformation critical strain. The method is reliable, quick, high in precision and low in cost. Subtle structure changes of the shape memory alloy composite damping material can be visually reflected, and the transformation critical point is precisely measured. The method is applicable to compact shape memory alloy, porous shape memory alloy and shape memory alloy composite materials.
Description
Technical field
The present invention relates to shape memory alloy field, more particularly to a kind of fine and close and porous shape memory conjunction
The determination method of metal/composite material stress-induced martensitic phase transformation critical point.
Background technology
Noise and vibration, impact failure in a lot of fields, such as Aero-Space, military affairs, communications and transportation, building etc., generally existing,
And inevitable, this brings numerous baneful influences to all trades and professions, or even causes serious consequence.On the one hand affect equipment
Precision, life and reliability, serious caused expensive equipment loss of function；Another aspect aggravating working environment, harm people's
Health and lives.Noise and vibration and impact failure prevent the industry development in field rapid at present, since recent decades, have increasingly been subject to
To extensive concern, and the market demand is all to be incremented by a high speed year by year.And the main method solving at present is exactly to adopt high-damping material
Damping energy-absorbing realized by material.Particularly in communications and transportation such as some bullet trains, highway, urban construction, tank armor, submarines
With the severe use environment of national defence it is desirable to damping material have high intensity, higher toughness and plasticity, wide using interval (-
100～200 DEG C), the characteristic such as corrosion resistance and long-life, organic viscoelastic material is due to its low melting point, low-intensity and can not
The shortcomings of reuse, it has been no longer appropriate for using in these occasions.Be currently mainly used is high damping alloy material, mainly
There are four big class：Magnesium alloy high-strength light, but corrosion resistance is poor, not reproducible use；The cheap intensity of alloy of ferromagnetic type
Height, but affected by magnetic fields serious, and application scenario is greatly limited；The casting pig of complex phase type and allumen damping performance are poor,
Low intensity, is not suitable for applied at elevated temperature.Marmem (main inclusion NiTi base, Cu base etc.) relies on its abundant interface (horse
Family name's body variant and twin-plane boundary) the viscosity energy-absorbing that moves, high-damping height is tough, and deforms and can recover, and reusable.Separately
Outward, will be mutually single to hole and second or be simultaneously introduced marmem, can significantly lift its damping capacity further, this master
Owing to the bending of hole wall and the substantial amounts of energy that also can dissipate that caves in, or adds additional the second phase and marmem
Interface also energy-absorbing.Therefore, the shape memory alloy of this high-strength and high damping is led in damping anti-noise, shock resistance
There is huge application prospect in domain.
However, the high damping characteristic of this marmem damping material and long-life temperature influence are huge, this master
Will because of high temperature when, such as NiTi marmem is higher than martensite reverse transformation end temp Af(it is usually no more than 100
DEG C), marmem is in parent phase state, loses abundant interfacial structure in low-temperature martensite state, thus damping capacity
Become excessively poor, or even become a kind of common material.Marmem is higher than martensite reverse transformation end temp AfWhen,
Martensitic phase being changed into by necessarily stress-induced parent phase, thus recovering its high damping characteristic, after unloading stress, can achieve weight
Multiple use.In order to realize the use at high temperature of marmem damping material it is thus necessary to determine that going out stress-induced martensite
Critical point.
Limit stress for the stress-induced martensite of fine and close marmem or strain, survey generally by material
Test system is stretched or compression experiment, obtains obvious stress-induced martensite platform area occurs on load-deformation curve,
From elastic deformation stage to platform area, have an obvious flex point, the as limit stress of stress-induced martensite, corresponding should
Variate is the critical strain of stress-induced martensite.However, for porous marmem or composite material of shape memory,
The load-deformation curve of test does not have obvious stress-induced martensite platform area, therefore it is difficult with this method and determines
The critical point of stress-induced martensite.Therefore, have been reported that loading procedure using sigmatron in-situ test stress it is also possible to
Analysis draws the critical point of stress-induced martensite.But, this method testing expense is expensive, needs to use sigmatron source,
And equipment is rare, complex operation.Other conventional equipments can be adopted, simple and easy method determines porous marmem or shape
The critical point of memory alloy composite material, this will have important using value.
Content of the invention
In order to overcome shortcoming and the deficiency of existing method, it is an object of the invention to provide a kind of method is reliable, quick, essence
Exactness is high, and low cost shapes the method for shape memory alloys composite damping material stress-induced martensitic phase transformation critical point really.
The present invention can intuitively reflect the trickle changes in microstructure of marmem composite damping material, accurately
Measure critical transformation temperature；For fine and close marmem, porous marmem, shape memory alloy is all
It is suitable for.
The purpose of the present invention is achieved through the following technical solutions：
The method determining marmem composite damping material stress-induced martensitic phase transformation critical point, walks including following
Suddenly：
(1) adopt differential thermal formula scanning heat analysis method (DSC, differential scanning calorimeter) really
The martensite reverse transformation end temp A of random sample productf；
(2) adopt Dynamic Mechanical Analyzer (DMA, Dynamic Mechanical Analysis) inverse higher than martensite
Phase transformation end temp AfMeasure the in-fighting-strain spectrum of sample；
(3) step (2) is analyzed using tangential method and obtain the critical point that in in-fighting-strain spectrum, in-fighting dramatically increases, as
The stress-induced martensitic phase transformation critical point of marmem composite damping material, corresponding strain is stress-induced geneva
The critical strain that body phase becomes.
Realize the object of the invention further it is preferable that step (1) described differential thermal formula scanning heat analysis method is adopted
Heating rate is 1～20 DEG C/min, determines martensite reverse transformation end temp AfMethod be tangential method.
Preferably, the test pattern that the described Dynamic Mechanical Analyzer of step (2) adopts is multiple strain sweep pattern
(Strain-sweep), the fixture of employing is double cantilever beam or single cantilever beam.
Preferably, the maximum strain amplitude set by the described Dynamic Mechanical Analyzer of step (2) is 1.5～2.2%, sets
Frequency be 0.1～200Hz.
Preferably, step (2) is described is higher than martensite reverse transformation end temp AfFor martensite reverse transformation end temp AfWith
Upper 5～50 DEG C.
Preferably, the described sample of step (2) adopt wire cutting be obtained, thickness be 1～2mm, successively use 800#, 1500#,
3000#, 5000# sand paper, clean for the polishing of each surface of sample, then adopt absolute ethyl alcohol ultrasonic wave to clean 5～15 minutes, blows
It is placed on drying 24～48h in drying box after dry.
The principle of the present invention is：Present invention discover that sample is stablized in austenitic state, DMA is gradually increased to sample
Strain, can obtain in-fighting-strain spectrum, by analyzing the part of Internal friction significant changes, may thereby determine that out induction geneva
The critical strain that body phase becomes.Wherein, dynamic thermomechanical analysis apparatus (DMA) be measurement sample under periodic vibration stress, with temperature,
The mechanical property of frequency or strain variation and the instrument of viscoelastic property.DMA tests mainly for solid sample, the mode of applying power
Based on stretching and bending.Testing sample is placed on fixture, and instrument measures corresponding power and amplitude in dynamic process after running, and leads to
Cross certain mathematical relationship and parameter computing can obtain real-time stress in dynamic changing process, strain, modulus, phase angle and
The data such as in-fighting, such that it is able to analyze the response with external condition for the properties of sample.Not lesioned sample, the no dirt of DMA method of testing
Dye, quick, accuracy is high, the bulk information that can obtain about sample integrity the advantages of.
In-fighting refers to that material causes mechanical energy gradually to turn in elastic range due to due to its internal various microcosmic influence factors
It is melted into the phenomenon for material interior energy, be a heterogeneous microstructure to material, the such as very sensitive physics such as interface, dislocation
Parameter.Marmem only has some dislocations and crystal boundary in parent phase state, and its Internal friction is very little；Work as stress-induced martensite
During formation, produce interface etc. between substantial amounts of twin boundary or martensite variants, thus leading to in-fighting to dramatically increase.Can be by dividing
The significant change of Internal friction and then reflect the slight change of internal structure in analysis strain path, thus Accurate Calibration critical reaction
Point.
Present invention process is simple, reliability, success rate are high.The invention has the beneficial effects as follows：
(1) the inventive method Non-Destructive Testing, fast, accuracy is high, low cost；
(2) the inventive method can intuitively reflect the trickle institutional framework of marmem composite damping material and become
Change, accurately obtain critical transformation temperature；For fine and close marmem, porous marmem, marmem is combined
Material is all suitable for.
Brief description
Fig. 1 is the fine and close Ni of embodiment 150Ti50The stereoscan photograph of marmem damping material；
Fig. 2 is the fine and close Ni of embodiment 150Ti50The DSC curve of sample；
Fig. 3 is the fine and close Ni of embodiment 150Ti50In-fighting-strain spectrum at 150 DEG C, under austenitic state for the sample；
Fig. 4 is the fine and close Ni of embodiment 246Ti54The stereoscan photograph of marmem composite damping material；
Fig. 5 is the fine and close Ni of embodiment 246Ti54The DSC curve of sample；
Fig. 6 is the fine and close Ni of embodiment 246Ti54In-fighting-strain spectrum under austenite (130 DEG C) state for the sample；
Fig. 7 a is embodiment 3 porous Ni46Ti54The metallograph of marmem composite damping material；
Fig. 7 b is embodiment 3 porous Ni46Ti54The stereoscan photograph of marmem composite damping material；
Fig. 8 is embodiment 3 porous Ni46Ti54The DSC curve of sample；
Fig. 9 is embodiment 3 porous Ni46Ti54In-fighting-strain spectrum under austenite (120 DEG C) state for the sample.
Specific embodiment
For more fully understanding the present invention, with reference to embodiment and accompanying drawing, the invention will be further described, but this
Bright embodiment not limited to this.
Embodiment 1
With composition as Ni50Ti50Fine and close marmem damping material as a example, that is, this alloy contains atomic ratio and is
50% Ni element, 50% Ti element, Sample Scan electromicroscopic photograph as shown in figure 1, surfacing, by single NiTi phase group
Become.
The method determining marmem composite damping material stress-induced martensitic phase transformation critical point, walks including following
Suddenly：
(1) this fine and close Ni is measured using differential thermal formula scanning heat analysis method50Ti50The DSC of shape memory alloy specimen is bent
Line, as shown in Fig. 2 the intensification being adopted or rate of temperature fall are 5 DEG C/min, Range of measuring temp is -60～200 DEG C, first by sample
Product are heated to 200 DEG C and stop 2 minutes, are then cooled to -60 DEG C with 5 DEG C/min speed, obtain cooling curve, i.e. Fig. 2 middle and upper part
Curve, then stop 2 minutes, be then warmed up to 200 DEG C with 5 DEG C/min speed, obtain heating curves, i.e. Fig. 2 middle and lower part
Curve.An obvious exothermic peak in cooling curve, and an obvious endothermic peak in heating curves, shows sample with temperature
Change shows obvious martensitic traoformation, and cooling curve shows that sample is completely converted into martensitic phase by parent phase (B2 phase)
(B19' phase), heating curves shows that sample changes parent phase completely by martensitic phase, therefore can determine martensite using tangential method
Reverse transformation end temp AfFor 100 DEG C；
(2) sample is obtained using wire cutting, thickness is 1mm, width is 4mm, length is the thin slice of 30mm, uses successively
The polishing of each surface of sample totally, thickness is changed into 0.6mm to 800#, 1500#, 3000#, 5000# sand paper, then adopts anhydrous second
Alcohol ultrasonic wave cleans 10 minutes, is placed on drying 24h in drying box after drying up.Using Dynamic Mechanical Analyzer in 150 DEG C of (AfTemperature
Above 50 DEG C) measure the in-fighting-strain spectrum of this sample, as shown in figure 3, the test pattern adopting is multiple strain sweep pattern
(Strain-sweep), the fixture of employing is double cantilever beam, and set maximum strain amplitude is 2.1%, and test frequency is
1Hz；Fig. 3 embodies sample Internal friction and undergos mutation process with strain, and this mutation is because its microstructure changes.
(3) critical point that in in-fighting-strain spectrum in Fig. 3, in-fighting dramatically increases is analyzed using tangential method, arrow indication strains
For 1.26%, the stress-induced martensitic phase transformation critical point of as fine and close NiTi marmem, corresponding strain is should
The critical strain of power strain induced martensite phase transformation.The damped coefficient recording this sample when 150 DEG C (completely austenitic state) is with strain
Response song body state (when test temperature maintains 150 DEG C) being gradually increased, with being gradually increased of strain, damped coefficient was before this
Reach a stable value (about 0.008 about) and maintain a period of time.After then reaching a critical point, damped coefficient can be dashed forward
So increase, and being gradually increased and increase with strain.According to the phase-change characteristic of marmem, increasing in austenitic state should
Power is it may occur that stress-induced martensitic phase transformation, and movement at interface etc. between martensitic twin interface and different variants, can show
Write and increase damped coefficient.So, from strain-in-fighting spectrum can accurate identified sign strain induced martensite phase transformation limit stress
(1.26%).
The present embodiment determines method with respect to sigmatron in-situ test stress, has reliability, accuracy height, and success rate is high
Feature, be primarily due to DMA method of testing, the strain of its measurement and in-fighting high precision, the precision of measuring strain can reach 10-9, the precision of Internal friction can reach 0.00001, and strain variation is by computer program control, reliable and stable, as long as sample can
There is deformation martensite, just can DMA method measure.However, sigmatron in-situ test stress determines method, need height
Can X-ray be introduced in material testing system, X-ray centering sample needs to be operated by people, and stability is bad, and material testing system
In, the precision of strain only has 0.0005, needs to analyze phase structure, could obtain the critical point of stress-induced martensite, artificial because
Element is more.
Embodiment 2
With composition as Ni46Ti54Fine and close marmem composite damping material as a example, that is, this alloy contains atomic ratio
Ni element for 46%, 54% Ti element, the microstructure of this sample is two phase compositions, half netted and granular Ti2Ni
Phase, is distributed in NiTi matrix phase, as shown in figure 4, dark color is mutually Ti2Ni phase, light color is NiTi phase.
The method determining marmem composite damping material stress-induced martensitic phase transformation critical point, walks including following
Suddenly：
(1) DSC curve that heat analysis method measures this fine and close NiTi shape memory alloy specimen is scanned using differential thermal formula, such as
Shown in Fig. 5, the intensification being adopted or rate of temperature fall are 10 DEG C/min, and Range of measuring temp is -60～200 DEG C, first by sample plus
Heat to 200 DEG C stops 2 minutes, is then cooled to -60 DEG C with 10 DEG C/min speed, obtains cooling curve, the i.e. song of Fig. 5 middle and upper part
Line, then stops 2 minutes, is then warmed up to 200 DEG C with 10 DEG C/min speed, obtains heating curves, the i.e. song of Fig. 5 middle and lower part
Line.An obvious exothermic peak in cooling curve, and an obvious endothermic peak in heating curves, shows that sample becomes with temperature
Change and show obvious martensitic traoformation, cooling curve shows that sample is completely converted into martensitic phase (B19' by parent phase (B2 phase)
Phase), heating curves shows that sample changes parent phase completely by martensitic phase, therefore determines that martensite reverse transformation terminates using tangential method
Temperature AfFor 103 DEG C.
(2) sample is obtained using wire cutting, thickness is 1mm, width is 4mm, length is the thin slice of 30mm, uses successively
The polishing of each surface of sample totally, thickness is changed into 0.6mm to 800#, 1500#, 3000#, 5000# sand paper, then adopts anhydrous second
Alcohol ultrasonic wave cleans 15 minutes, is placed on drying 30h in drying box after drying up.Using Dynamic Mechanical Analyzer in 130 DEG C of (martensites
Reverse transformation end temp AfMore than temperature 27 DEG C) measure the in-fighting-strain spectrum of this sample, as shown in fig. 6, the test mould adopting
Formula is multiple strain sweep pattern (Strain-sweep), and the fixture of employing is double cantilever beam, set maximum strain amplitude
For 2.1%, test frequency is 10Hz；
(3) critical point that in in-fighting-strain spectrum in Fig. 6, in-fighting dramatically increases is analyzed using tangential method, arrow indication strains
For 1.12%, the stress-induced martensitic phase transformation critical point of as fine and close NiTi marmem composite damping material, institute is right
The strain answered is the critical strain of stress-induced martensitic phase transformation.Fig. 6 embodies sample Internal friction and undergos mutation process with strain, this
Individual mutation is due to its microstructure (stress-induced martensitic phase transformation leads to interface and twin-plane boundary between martensite variants to increase)
Caused by changing.This sample does not have obvious stress plateau area using general material testing system, and also cannot determine should
Power strain induced martensite critical point.
Austenitic state (when test temperature maintains 130 DEG C), with being gradually increased of strain, damped coefficient reached before this
Maintain a period of time to a stable value (about 0.01 about).After then reaching a critical point, damped coefficient can be suddenly
Increase, and being gradually increased and increase with strain.According to the phase-change characteristic of marmem, increasing in austenitic state should
Power is it may occur that stress-induced martensitic phase transformation.And due to Ti2The difference of elastic modelling quantity between Ni phase and NiTi phase, leads to multiple
Condensation material, can be in Ti when meeting with stresses2Produce an additional stress field around Ni phase, lead to the NiTi phase of surrounding to be sent out in advance
Give birth to stress-induced martensitic phase transformation, that is, limit stress point diminishes, the critical strain of this sample is 1.12%, ratio Fig. 3 compact single-phase
NiTi marmem reduces 0.14%, and this small change can be measured by the inventive method.
Embodiment 3
With composition as Ni46Ti54Porous marmem composite damping material as a example, that is, this alloy contains atomic ratio
Ni element for 46%, 54% Ti element, this sample is porous material, and porosity is 37%, and pore size is 200 μm of left sides
The right side, Fig. 7 a is the present embodiment porous Ni46Ti54The metallograph of marmem composite damping material；Fig. 7 b is the present embodiment
Porous Ni46Ti54The stereoscan photograph of marmem composite damping material；As shown in Figure 7a, its microstructure is two-phase
Composition, granular Ti2Ni phase, is distributed in NiTi matrix phase, and as shown in Figure 7b, dark color is mutually Ti2Ni phase, light color is NiTi
Phase, shows existing many pore surfaces in this sample, also increases the interface of second and matrix, this both contributes to increase memory
The damping capacity of alloy composite materials.
The method determining marmem composite damping material stress-induced martensitic phase transformation critical point, walks including following
Suddenly：
(1) DSC curve that heat analysis method measures this fine and close NiTi shape memory alloy specimen is scanned using differential thermal formula, such as
Shown in Fig. 8, the heating rate being adopted is 5 DEG C/min, and Range of measuring temp is -60～200 DEG C, first sample is heated to 200
DEG C stop 2 minutes, be then cooled to -60 DEG C with 5 DEG C/min speed, obtain cooling curve, i.e. the curve of Fig. 8 middle and upper part, then
Stop 2 minutes, be then warmed up to 200 DEG C with 10 DEG C/min speed, obtain heating curves, the i.e. curve of Fig. 8 middle and lower part.Cooling is bent
An obvious exothermic peak in line, and an obvious endothermic peak in heating curves, shows that sample varies with temperature and shows
Significantly martensitic traoformation, cooling curve shows that sample is completely converted into martensitic phase (B19' phase) by parent phase (B2 phase), heating
Curve shows that sample changes parent phase completely by martensitic phase, therefore determines martensite reverse transformation end temp A using tangential methodfFor
103℃.
(2) sample to be tested is obtained using wire cutting, thickness is 2mm, width is 4mm, length is the thin slice of 20mm, according to
The polishing of each surface of sample totally, thickness is changed into 1.5mm for secondary use 800#, 1500#, 3000#, 5000# sand paper, then adopts no
Water-ethanol ultrasonic wave cleans 5 minutes, is placed on drying 48h in drying box after drying up.Using Dynamic Mechanical Analyzer in 120 DEG C of (horses
Family name body reverse transformation end temp AfAbove 17 DEG C) measure the in-fighting-strain spectrum of this sample, as shown in figure 9, the test mould adopting
Formula is multiple strain sweep pattern (Strain-sweep), and the fixture of employing is single cantilever beam, set maximum strain amplitude
For 1.9%, test frequency is 5Hz.
(3) critical point that in in-fighting-strain spectrum in Fig. 9, in-fighting dramatically increases is analyzed using tangential method, arrow indication strains
For 0.6%, the as stress-induced martensitic phase transformation critical point of porous NiTi shape memory alloy composite damping material, corresponding
Strain be stress-induced martensitic phase transformation critical strain.Fig. 9 embodies sample Internal friction and undergos mutation process with strain, this
Mutation is because its microstructure (stress-induced martensitic phase transformation leads to interface and twin-plane boundary between martensite variants to increase) is sent out
Caused by changing.This sample does not have obvious stress plateau area using general material testing system, cannot determine stress yet
Strain induced martensite critical point.
Austenitic state (when test temperature maintains 150 DEG C), with being gradually increased of strain, damped coefficient reached before this
Maintain a period of time to a stable value (about 0.015 about).After then reaching a critical point, damped coefficient can be suddenly
Increase, and being gradually increased and increase with strain.According to the phase-change characteristic of memorial alloy, in austenitic state increasing stress, meeting
There is stress-induced martensitic phase transformation.And due to Ti2Elastic modelling quantity between Ni phase and NiTi phase, and hole and NiTi phase it
Between elastic modelling quantity significant difference, lead to composite porous when meeting with stresses, can in Ti2Produce around Ni phase and hole
One additional huge stress field, leads to the NiTi phase of surrounding that stress-induced martensitic phase transformation occurs in advance, i.e. limit stress point
Significantly diminish, the critical strain of this sample is 0.6%, than Fig. 3 compact single-phase NiTi marmem and Fig. 6 dense dual phase
NiTi shape memory alloy will be much smaller, and this change can be measured by the method for the present invention.
Embodiments of the present invention are simultaneously not restricted by the embodiments, and other any spirit without departing from the present invention are real
Matter and the change made under principle, modification, replacement, combine, simplify, all should be equivalent substitute mode, be included in the present invention
Protection domain within.
Claims (6)
1. determine the method for marmem composite damping material stress-induced martensitic phase transformation critical point it is characterised in that wrapping
Include following steps：
(1) the martensite reverse transformation end temp A that heat analysis method determines sample is scanned using differential thermal formulaf；
(2) adopt Dynamic Mechanical Analyzer higher than martensite reverse transformation end temp AfMeasure the in-fighting-strain spectrum of sample；
(3) step (2) is analyzed using tangential method and obtain the critical point that in in-fighting-strain spectrum, in-fighting dramatically increases, as shape
The stress-induced martensitic phase transformation critical point of memorial alloy composite damping material, corresponding strain is stress-induced martensite phase
The critical strain becoming.
2. determination marmem composite damping material stress-induced martensitic phase transformation critical point according to claim 1
Method it is characterised in that：The described differential thermal formula of step (1) scan the heating rate that adopted of heat analysis method be 1～20 DEG C/
Min, determines martensite reverse transformation end temp AfMethod be tangential method.
3. determination marmem composite damping material stress-induced martensitic phase transformation critical point according to claim 1
Method it is characterised in that：The test pattern that the described Dynamic Mechanical Analyzer of step (2) adopts is multiple strain sweep pattern,
Using fixture be double cantilever beam or single cantilever beam.
4. determination marmem composite damping material stress-induced martensitic phase transformation critical point according to claim 1
Method it is characterised in that：Maximum strain amplitude set by the described Dynamic Mechanical Analyzer of step (2) is 1.5～2.2%,
The frequency setting is as 0.1～200Hz.
5. determination marmem composite damping material stress-induced martensitic phase transformation critical point according to claim 1
Method it is characterised in that：Step (2) is described to be higher than martensite reverse transformation end temp AfFor martensite reverse transformation end temp
AfAbove 5～50 DEG C.
6. determination marmem composite damping material stress-induced martensitic phase transformation critical point according to claim 1
Method it is characterised in that：The described sample of step (2) adopt wire cutting be obtained, thickness be 1～2mm, successively use 800#,
1500#, 3000#, 5000# sand paper, clean for the polishing of each surface of sample, then adopts absolute ethyl alcohol ultrasonic wave to clean 5～15 points
Clock, is placed on drying 24～48h in drying box after drying up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610831405.9A CN106404656A (en) | 2016-09-18 | 2016-09-18 | Method for determining stress-induced martensitic transformation critical point of shape memory alloy composite damping material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610831405.9A CN106404656A (en) | 2016-09-18 | 2016-09-18 | Method for determining stress-induced martensitic transformation critical point of shape memory alloy composite damping material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106404656A true CN106404656A (en) | 2017-02-15 |
Family
ID=57996788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610831405.9A Pending CN106404656A (en) | 2016-09-18 | 2016-09-18 | Method for determining stress-induced martensitic transformation critical point of shape memory alloy composite damping material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106404656A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991179A (en) * | 2017-11-03 | 2018-05-04 | 合肥通用机械研究院 | A kind of method for measuring strain inducing martensitic traoformation kinetic curve |
| CN113484469A (en) * | 2021-06-30 | 2021-10-08 | 中国科学院青海盐湖研究所 | In-situ characterization method for nano-scale phase separation of phase change energy storage material of hydrated salt system |
| CN114352239A (en) * | 2021-12-17 | 2022-04-15 | 华南理工大学 | Ultrahigh strain recovery shape memory alloy sieve tube material, preparation method and application |
| CN114734207A (en) * | 2022-04-14 | 2022-07-12 | 山东大学 | NiTi alloy surface cutting process and roughness adjusting method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356747A (en) * | 2001-03-28 | 2002-12-13 | Kobe Steel Ltd | Steel product with excellent toughness |
| CN1766593A (en) * | 2005-10-14 | 2006-05-03 | 沈阳理工大学 | Method for determining thermal impact temperature of Ti-Ni base shape memory alloy |
| US20060257773A1 (en) * | 2005-05-11 | 2006-11-16 | Xerox Corporation | Polyalkylene materials |
| CN103163172A (en) * | 2011-12-19 | 2013-06-19 | 中国科学院金属研究所 | Testing method of shape memory alloy transient damping |
-
2016
- 2016-09-18 CN CN201610831405.9A patent/CN106404656A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356747A (en) * | 2001-03-28 | 2002-12-13 | Kobe Steel Ltd | Steel product with excellent toughness |
| US20060257773A1 (en) * | 2005-05-11 | 2006-11-16 | Xerox Corporation | Polyalkylene materials |
| CN1766593A (en) * | 2005-10-14 | 2006-05-03 | 沈阳理工大学 | Method for determining thermal impact temperature of Ti-Ni base shape memory alloy |
| CN103163172A (en) * | 2011-12-19 | 2013-06-19 | 中国科学院金属研究所 | Testing method of shape memory alloy transient damping |
Non-Patent Citations (2)
| Title |
|---|
| CHEN CHIEN ET AL.: "Damping Capacities of Ti50Ni50-xCux Shape Memory Alloys Measured under Temperature, Strain, and Frequency Sweeps", 《MATERIALS TRANSACTIONS》 * |
| SHIH-HANG CHANGE ET AL.: "Damping Characteristics of the Inherent and Intrinsic Internal Friction of Ti50Ni50-xFex (x=2, 3, and 4) Shape Memory Alloys", 《MATERIALS TRANSACTIONS》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991179A (en) * | 2017-11-03 | 2018-05-04 | 合肥通用机械研究院 | A kind of method for measuring strain inducing martensitic traoformation kinetic curve |
| CN113484469A (en) * | 2021-06-30 | 2021-10-08 | 中国科学院青海盐湖研究所 | In-situ characterization method for nano-scale phase separation of phase change energy storage material of hydrated salt system |
| CN114352239A (en) * | 2021-12-17 | 2022-04-15 | 华南理工大学 | Ultrahigh strain recovery shape memory alloy sieve tube material, preparation method and application |
| CN114734207A (en) * | 2022-04-14 | 2022-07-12 | 山东大学 | NiTi alloy surface cutting process and roughness adjusting method |
| US11964337B2 (en) | 2022-04-14 | 2024-04-23 | Shandong University | NiTi alloy surface cutting process and roughness adjustment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106404656A (en) | Method for determining stress-induced martensitic transformation critical point of shape memory alloy composite damping material | |
| Vogler et al. | Hugoniot and strength behavior of silicon carbide | |
| Song et al. | Dynamic tensile characterization of a 4330-V steel with Kolsky bar techniques | |
| CN103411833A (en) | Instrumentation indentation test method for elastic-plastic parameters of material based on single Vickers pressure head | |
| CN107014705A (en) | A kind of method and system based on sound characteristic information prediction magnesium alloy sample fatigue limit | |
| CN106197342A (en) | Fracture width change dynamic monitor based on strain sensing | |
| CN104655505A (en) | Instrumented-ball-pressing-technology-based residual stress detection method | |
| Böhning et al. | Influence of biodiesel sorption on temperature-dependent impact properties of polyethylene | |
| Tan et al. | Effect of temperature on the fatigue performance and failure mechanism of a flexible adhesive butt joint | |
| Ribeiro et al. | Evaluation of mode II fatigue disbonding using Central Cut Plies specimen and distributed strain sensing technology | |
| JP6308171B2 (en) | Evaluation method of brittle fracture propagation stop performance of thick steel plate | |
| CN109142525A (en) | A kind of detection method of steel-casting | |
| Ganesh Kumar et al. | Influence of some test parameters on automated ball indentation test results | |
| El-Hadek et al. | Dynamic fracture behavior of syntactic epoxy foams: optical measurements using coherent gradient sensing | |
| Skelton | Hysteresis, yield, and energy dissipation during thermo-mechanical fatigue of a ferritic steel | |
| CN206037977U (en) | Fracture width changes dynamic monitoring device based on response of meeting an emergency | |
| CN100498312C (en) | In site precision measuring method for material temperature and application in researching of material deformation | |
| Tao et al. | Multiaxial notch fatigue life prediction based on the dominated loading control mode under variable amplitude loading | |
| Oldyrev | Determination of the fatigue life of plastics from the self-heating temperature | |
| KR101113950B1 (en) | Fatigue life prediction method by measuring the surface temperature | |
| Lipski | Thermographic method based accelerated fatigue limit calculation for steel x5crni18-10 subjected to rotating bending | |
| Hackett et al. | Measurement of dynamic fracture toughness of ductile materials | |
| Mathias | Material Characterization with Digital Image Correlation: Understanding the properties and behavior of materials through various testing methods, such as tensile, hardness, and impact testing, to determine their mechanical, thermal, and chemical characteristics | |
| Rempe et al. | High temperature thermal and structural material properties for metals used in LWR vessels | |
| Henschel et al. | Deflection measurement in low-blow Charpy impact tests |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |
|
| RJ01 | Rejection of invention patent application after publication |