CN106311997A - Technology method for increasing thickness of amorphous alloy strip - Google Patents
Technology method for increasing thickness of amorphous alloy strip Download PDFInfo
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- CN106311997A CN106311997A CN201610872616.7A CN201610872616A CN106311997A CN 106311997 A CN106311997 A CN 106311997A CN 201610872616 A CN201610872616 A CN 201610872616A CN 106311997 A CN106311997 A CN 106311997A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
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Abstract
The invention relates to a technology method for increasing the thickness of an amorphous alloy strip. The technology method is characterized by specifically comprising the steps that firstly, an incidence relation of overheat circulation treatment and alloy melt viscosity reduction is established; secondly, the overheat circulation treatment temperature capable of reducing the alloy melt viscosity to the maximum degree is selected, and heat treatment is conducted; and thirdly, the temperature of the alloy melt obtained after overheat treatment is reduced to the set casting temperature, and the amorphous solid alloy thin strip is obtained through rapid solidification. According to the technology method, under the situation that the alloy components and the rapid solidification technology conditions are not changed, the thickness of the amorphous alloy strip is increased through the technology method for reducing the alloy melt viscosity through overheat treatment, and the preparing difficulty for the amorphous alloy thick strip is lowered. The technology method has the beneficial effects that the implementation cost is low, efficiency is high, operability and repeatability are high, and the technology reliability is high, and the technology method is suitable for being widely applied to the technical field of metal functional material preparing.
Description
Technical field
The invention belongs to Metallic Functional Materials preparing technical field, particularly relate to a kind of increase amorphous alloy strips thickness
Process.
Background technology
Alloy melt viscosity is the important physical amount characterizing alloy melt physical property, directly reflection atom and atom
Cluster in the melt transport situation, be the basic parameter of fluid governing equation.Temperature is affect alloy melt viscosity main
Factor, alloy melt viscosity is that temperature rises along with the universal law of variations in temperature, and viscosity reduces；Temperature declines, and viscosity increases.
Owing to alloy melt viscosity is inversely proportional to temperature, in alloy melt process of setting, melt temperature decline causes alloy melt viscosity
Increase, make melt lose flowability, be transformed into solid.The structure of solid alloy is determined by process of setting, at process of setting
Middle the structure of alloy melt can be remained into solid alloy, just obtain solid amorphous alloy.Alloy melt to be realized is non-to solid
The transformation of peritectic alloy, process of setting must be the most supercool solidification, does not occur the forming core growth of crystal in supercool solidification.
Supercool solidification requires that alloy melt must have certain degree of supercooling, and the degree of supercooling of alloy melt is the biggest, the amorphous of alloy melt
Forming ability is the strongest, is more readily available solid amorphous alloy.Owing to the degree of supercooling of alloy melt is the least, artificial increase can only be used
The mode of gold melt undercooling degree makes alloy melt meet supercool solidification to the transformation of solid alloy, and melt structure is remained into solid
In alloy.Fast Cooling solidification is a kind of mode being effectively increased alloy melt degree of supercooling, is the master preparing solid amorphous alloy
Wanting one of method, because in Fast Cooling process of setting, the amplitude that alloy melt viscosity increases, less than cooling extent, is formed viscous
Degree hysteresis, rate of temperature fall is the fastest, and viscosity is delayed the most serious, when viscosity is delayed reach to a certain degree time, can realize alloy melt
The supercool solidification of body, obtains solid amorphous alloy.
By Fast Cooling clotting method, although alloy melt can be prepared as solid amorphous alloy, but solid amorphous
The size of alloy is but limited by amorphous formation ability and the equipment cooling capacity of alloy melt itself.Solid amorphous alloy
Size is for the application of solid amorphous alloy, and particularly particularly significant to the product utilizing non-crystaline amorphous metal to manufacture, such as, soft magnetism is non-
Peritectic alloy thickness of strip is to determine energy-economic transformer and the key factor of amorphous electric machine iron core lamination coefficient, increases amorphous alloy strip
The thickness of material is conducive to promoting iron core preparation efficiency and performance.The thickness of amorphous alloy strips to be increased and acquisition are larger sized
Solid amorphous alloy, is necessary for increasing further the degree of supercooling of alloy melt in Fast Cooling process of setting, will realize this mesh
, it is necessary for the cooling capacity of enhancing equipment or the amorphous formation ability of alloy melt.The amorphous formation of alloy melt itself
Ability depends primarily on the proportioning components of alloy, therefore can improve the amorphous of alloy melt by adjusting alloy composition proportioning
Forming ability.United States Patent (USP) US5958153A discloses a kind of P that adds in Fe-based amorphous alloy to prepare thickness in 40-90 μm
The method of amorphous alloy strips, this proportioning components containing P amorphous alloy strips is (FeSiBC) 100-xPx, the wherein change of x
Change scope is 2～6at.%, owing to adding P element in the alloy, causes the reduction of Fe content, and therefore the method existence is main
Weak point is: the saturation induction density of non-crystaline amorphous metal is low.Report it is recognized that while alloy becomes with document from published patent
Part change can improve the amorphous formation ability of alloy melt, but to change solid equally non-in the change of alloy composition proportioning
The macro property of peritectic alloy.From the point of view of amorphous alloy material, the decline of macro property will necessarily significantly affect non-crystaline amorphous metal material
Material and the performance of goods.Have fixing in order to ensure the macro property of solid amorphous alloy, the generally solid amorphous alloy of preparation
Proportioning components, it is impossible to arbitrarily change.When alloy composition proportioning makes the amorphous formation ability deficiency of alloy melt itself, can
With the cooling capacity by improving equipment, the rate of temperature fall increased in rapid solidification makes up.But raising equipment
Cooling capacity relate to all many problems such as equipment Design and preparation, be a complicated systemic engineering.
The change of alloy melt viscosity reflects the essence of melt structure change, when temperature rises, and poor stability in melt
Large scale elementide resolve into the smaller but more preferable little cluster of stability, the cluster that size is little is conducive to increasing
The mobility of melt, so viscosity reduces；When temperature declines, the size of melt Atom cluster increases, the atomic group that size is big
Bunch be not conducive to the mobility of melt, so viscosity increases.The pace of change of melt Structure of Atomic Clusters during heating-cooling
Always lag behind the change of temperature, alloy melt macroscopic property is presented as viscosity hysteresis.In temperature-fall period, steady at height
The potential barrier that above small size elementide, increase atom need to overcome qualitatively is decomposed than the large scale elementide of poor stability to be needed
The potential barrier overcome is big, so melt sticking phenomenon becomes apparent from than melt sticking phenomenon in temperature-rise period in temperature-fall period.Alloy melts
The delayed degree of supercooling adding melt of body viscosity, is favorably improved the amorphous formation ability of alloy melt.
In sum, although increasing amorphous alloy strips thickness, the application of amorphous band is played an important role, but at present
Still lacking the effective technology method improving amorphous alloy strips thickness, main cause is: lacks and improves alloy melt amorphism
The technical method of one-tenth ability.It is the most non-by improve the amorphous formation ability of alloy melt increasing amorphous alloy strips thickness
One of the unsolved key of peritectic alloy Material Field and On Key Scientific.Therefore, alloy melt amorphism is being improved
On the basis of one-tenth ability, the process setting up increase amorphous alloy strips thickness is to meet important non-crystalline solids alloy material
The guardian technique that material research and through engineering approaches produce, but also be to research and develop the weight that the solid amorphous alloy material of novel high-performance is badly in need of
Want technology.
Summary of the invention
The present invention seeks to for overcome existing for prior art deficiency and provide a kind of increase amorphous alloy strips
The process of thickness, the present invention can be effectively increased amorphous alloy strips thickness, utilizes non-crystalline solids to close to significantly improve
Gold ribbon material manufactures the lamination coefficient of iron core, improves the efficiency of non-crystalline solids alloy strip steel rolled stock iron core.
According to the present invention propose a kind of process increasing amorphous alloy strips thickness, it is characterised in that include as
Lower concrete steps:
Step 1, sets up overheated circular treatment and the relation reducing alloy melt viscosity: (1) sets Fe79Si13B8 alloy
The overtemperature of melt is 1700 DEG C, and the temperature range that thermal cycle processes is 1240-1700 DEG C；(2) high temperature viscosity is used to measure
The viscosity of alloy melt measured by instrument, and the liter gentleness cooling rate of Fe79Si13B8 alloy melt is all set as 10 DEG C/min, is surveying
Before the viscosity of the alloy melt measuring each temperature, first insulation 1 hour, measures, obtains Fe79Si13B8 alloy
The feature of the viscosity with temperature change of melt；
Step 2, selects the overheated circular treatment temperature of alloy melt viscosity to be greatly lowered in pouring temperature and carry out
Heat treatment: the viscosity number of the Fe79Si13B8 alloy melt that (1) is measured based on reality, obtains after 1700 DEG C of Overheating Treatment, then
When being cooled to 1240 DEG C, the viscosity number of Fe79Si13B8 alloy melt have dropped 13.5%, thus selects Fe79Si13B8 alloy
The Overheating Treatment temperature of melt is 1700 DEG C；(2) by Fe78Si9B13 alloy melt with the ramp of 10 DEG C/min to 1700
DEG C and under this temperature conditions be incubated 1 hour；
Step 3, pouring temperature rapid solidification that the alloy melt temperature after Overheating Treatment is down to setting obtain amorphous
State solid alloy strip: the Fe79Si13B8 alloy melt after 1700 DEG C of Overheating Treatment is lowered the temperature with the speed of 60 DEG C/min
To 1240 DEG C, then Fe79Si13B8 alloy melt is poured into a mould on the quickly cooling copper roller of high speed rotating by nozzle continuously, should
The linear velocity on copper roller surface is 25 meter per seconds, the non-crystalline solids alloy thin band being become thickness to be 32 microns by quick solidification.
The principle that realizes of the present invention is: the step 1 of the present invention is to measure the viscous feature of overheated circular treatment alloy melt:
Owing to the change of alloy melt viscosity with temperature has hysteresis quality, alloy melt was carried out at thermal cycle in the temperature range set
During reason, in temperature-rise period and temperature-fall period, alloy melt has different viscosities so that melt viscosity is no longer the list of temperature
Value function, but the multivalued function of temperature；Utilize high temperature viscosity measuring instrument to alloy melt in overheated circulating treatment procedure
Viscosity measure, obtain the viscous feature of overheated circular treatment alloy melt；Step 2 can be significantly in pouring temperature for selection
Reduce the overheated circular treatment temperature of alloy melt viscosity and carry out heat treatment: along with alloy melt overheated circular treatment temperature
Difference, different Overheating Treatment temperature causes alloy melt to have different viscosity numbers in pouring temperature, by setting up melt viscosity
With the select permeability that the incidence relation of Overheating Treatment temperature can solve optimal overheated circular treatment temperature；Glue according to known melt
Stagnant feature and the interrelated relation of alloy melt overheated circular treatment temperature, select alloy to be greatly reduced in pouring temperature and melt
The Overheating Treatment temperature of body viscosity is also circulated heat treatment in corresponding temperature range；Step 3 is by the alloy of Overheating Treatment
Melt cool to set melt cast temperature and rapid solidification obtain non-crystalline solids alloy thin band: after overheated circular treatment
Alloy melt cool to rapidly fast solidification technology set normal alloy melt temperature, carry out rapid solidification simultaneously, obtain
Non-crystalline solids alloy, to realize the raising of solid amorphous alloy strip steel rolled stock thickness.
The present invention compared with prior art its remarkable advantage is:
One is a kind of process increasing amorphous alloy strips thickness that the present invention proposes, and has started this area preparation big
The new concept of the solid amorphous alloy strip steel rolled stock of thickness and new departure.
Two is that the present invention is applicable to all of alloy melt, particularly can have the feelings of larger fluctuation at alloy melt composition
The thickness of solid amorphous alloy strip steel rolled stock is increased under condition.
Three be the present invention have be easy to implement, efficiency height, low cost, controllable property and repeatability is strong, engineering reliability is high
Etc. feature, it is suitable for the extensive application at Metallic Functional Materials preparing technical field.
Accompanying drawing explanation
Fig. 1 is the process blocks schematic diagram of a kind of process increasing amorphous alloy strips thickness that the present invention proposes.
Fig. 2 be the embodiment of the present invention 1 to Fe79Si13B8 alloy melt temperature at the overheated place of temperature range 1240-1700 DEG C
The schematic diagram of viscosity is measured during reason.
Fig. 3 is the high resolution picture of the solid amorphous alloy of Fe79Si13B8 that the embodiment of the present invention 1 utilizes transmission electron microscope to shoot,
Alloy melt, after 1700 DEG C of Overheating Treatment, is cooled to 1240 DEG C and uses high-speed plane stream caster technology to be closed by Fe79Si13B8
Gold melt is rapidly solidificated into the schematic diagram of non-crystalline solids alloy thin band；In Fig. 3, the only amorphous structure of display, can't see crystalline substance
State region.
Fig. 4 is the high-resolution of the Fe79Si13B8 non-crystalline solids alloy that the embodiment of the present invention 1 utilizes transmission electron microscope to shoot
Picture, uses high-speed plane stream caster technology by 1240 DEG C of direct rapid solidifications of Fe79Si13B8 alloy melt without heat treatment
Become the schematic diagram of non-crystalline solids alloy thin band；The nanoscale that the region shown in circle is some scattered distributions in Fig. 4 is brilliant
State region.
Detailed description of the invention
With embodiment, the detailed description of the invention of the present invention is described in further detail below in conjunction with the accompanying drawings.
In conjunction with Fig. 1, a kind of process increasing amorphous alloy strips thickness that the present invention proposes, including following concrete step
Rapid:
Step 1, sets up overheated circular treatment and the incidence relation reducing alloy melt viscosity: (1) sets Fe79Si13B8
The overtemperature of alloy melt is 1700 DEG C, and the temperature range that thermal cycle processes is 1240-1700 DEG C；(2) high temperature viscosity is used
The viscosity of alloy melt measured by measuring instrument, and the liter gentleness cooling rate of Fe79Si13B8 alloy melt is all set as 10 DEG C/min,
Before measuring the viscosity of alloy melt of each temperature, first insulation 1 hour, measures, obtains Fe79Si13B8
The feature of the viscosity with temperature change of alloy melt；
Step 2, selects the overheated circular treatment temperature of alloy melt viscosity to be greatly lowered in pouring temperature and carry out
Heat treatment: the viscosity number of the Fe79Si13B8 alloy melt that (1) is measured based on reality, obtains after 1700 DEG C of Overheating Treatment, then
When being cooled to 1240 DEG C, the viscosity number of Fe79Si13B8 alloy melt declines 13.5%, thus selects Fe79Si13B8 alloy to melt
The Overheating Treatment temperature of body is 1700 DEG C；(2) by Fe79Si13B8 alloy melt with the ramp of 10 DEG C/min to 1700 DEG C
And it is incubated 1 hour under this temperature conditions；
Step 3, pouring temperature rapid solidification that the alloy melt temperature after Overheating Treatment is down to setting obtain amorphous
State solid alloy strip: the Fe79Si13B8 alloy melt after 1700 DEG C of Overheating Treatment is lowered the temperature with the speed of 60 DEG C/min
To 1240 DEG C, then Fe79Si13B8 alloy melt is poured into a mould on the quickly cooling copper roller of high speed rotating by nozzle continuously, should
The linear velocity on copper roller surface is 25 meter per seconds, the non-crystalline solids alloy thin band being become thickness to be 32 microns by quick solidification.
The further preferred version of a kind of process increasing amorphous alloy strips thickness that the present invention proposes is:
The Overheating Treatment temperature of Fe78Si9B13 alloy melt of the present invention is higher than alloy melt pouring temperature 460 DEG C；
The range of accommodation of described alloy melt Overheating Treatment temperature is 1240-1700 DEG C；The shape of described non-crystalline solids alloy includes
Thin ribbon shaped, bar-shaped, lamellar, thread or powder；The material of described amorphous solid alloy strip is the Fe in non-crystaline amorphous metal system
Base, FeNi base, FeCo base；The size of described non-crystalline solids alloy thin band is tape thickness 32 microns, bandwidth 50-280 millimeter.
The specific embodiment of a kind of process increasing amorphous alloy strips thickness that the present invention proposes is as follows:
Embodiment 1: as a example by using Fe79Si13B8 non-crystalline solids alloy thin band, the index number in described chemical formula
For at%, this non-crystalline solids alloy thin band is to use high-speed plane stream caster method commonly used in the art to prepare.Use
The concrete operation step of a kind of process increasing amorphous alloy strips thickness that the present invention proposes is as follows:
Step 1:(1) select Fe79Si13B8 alloy melt overtemperature be 1700 DEG C, thermal cycle process humidity province
Between be 1240-1700 DEG C；(2) use high temperature viscosity measuring instrument (GBX Products, model: Viscodrop 2000) to measure to close
The viscosity of gold melt, the liter gentleness cooling rate of alloy melt is all 10 DEG C/min, in order to ensure the accuracy of viscosity measurement,
First be incubated 1 hour in each measurement temperature, measure the most again, the feature of the viscosity with temperature that obtains change as in figure 2 it is shown,
Demonstrate the sticking phenomenon after alloy melt Overheating Treatment；
Step 2: viscosity number based on reality measurement is as shown in Figure 2, it is known that after 1700 DEG C of Overheating Treatment, then cool to
When 1240 DEG C, the viscosity number of melt have dropped about 13.5%, thus selects the Overheating Treatment temperature of Fe79Si13B8 alloy melt
Be 1700 DEG C, and by Fe79Si13B8 alloy melt with the ramp of 10 DEG C/min to 1700 DEG C, then in this temperature conditions
Lower insulation 1 hour；
Step 3: the Fe79Si13B8 alloy melt after 1700 DEG C of Overheating Treatment is cooled to the speed of 60 DEG C/min
1240 DEG C, then alloy melt is poured into a mould on the quickly cooling copper roller of high speed rotating by nozzle continuously, the line on this copper roller surface
Speed is 25 meter per seconds, is become, by quick solidification, the non-crystalline solids alloy thin band that thickness is about 32 microns.So that it is prepared
Non-crystalline solids alloy thin band has uniform thickness, needs to accomplish alloy melt temperature essence during high-speed plane stream caster
Really detect and real-time control, the monitoring of high precision roller mouth spacing, cooling copper roller rotating speed high precision closed loop control, copper roller cooling efficiency tune
Control and spray tape speed control.
By the high resolution picture schematic diagram of the non-crystalline solids alloy Fe79Si13B8 strip micro structure that above-mentioned steps obtains
As it is shown on figure 3, the architectural feature wherein shown is amorphous state disordered structure, there is no crystalline structure feature.As a comparison, phase is utilized
1240 DEG C of Fe79Si13B8 alloy melts without heat treatment are directly poured into a mould continuously by same rapid solidification condition by nozzle
On the quickly cooling copper roller of high speed rotating, the linear velocity on this copper roller surface is 25 meter per seconds, is prepared for the strip of thickness 30 microns,
The high resolution picture schematic diagram of this strip micro structure as shown in Figure 4, wherein it can be seen that in noncrystal substrate the nanoscale of scattered distribution
Texture area.Illustrate that the present invention can increase the thickness of non-crystalline solids alloy thin band.
In sum, a kind of process increasing amorphous alloy strips thickness that the present invention proposes, it is possible to non-in guarantee
On the premise of crystalline solid alloy thin band quality, increase the thickness of solid amorphous alloy strip steel rolled stock, it is thus achieved that high-quality solid amorphous
Alloy thicker strip, it is adaptable to different solid amorphous alloy material systems.
The present invention, through validation trial, achieves satisfied trial effect.
Claims (4)
1. the process increasing amorphous alloy strips thickness, it is characterised in that comprise the following specific steps that:
Step 1, sets up overheated circular treatment and the incidence relation reducing alloy melt viscosity: (1) sets Fe79Si13B8 alloy
The overtemperature of melt is 1700 DEG C, and the temperature range that thermal cycle processes is 1240-1700 DEG C；(2) high temperature viscosity is used to measure
The viscosity of alloy melt measured by instrument, and the liter gentleness cooling rate of Fe79Si13B8 alloy melt is all set as 10 DEG C/min, is surveying
Before the viscosity of the alloy melt measuring each temperature, first insulation 1 hour, measures, obtains Fe79Si13B8 alloy
The feature of the viscosity with temperature change of melt；
Step 2, selects the overheated circular treatment temperature of alloy melt viscosity to be greatly lowered in pouring temperature and carry out at heat
Reason: the viscosity number of the Fe79Si13B8 alloy melt that (1) is measured based on reality, obtains after 1700 DEG C of Overheating Treatment, then lowers the temperature
During to 1240 DEG C, the viscosity number of Fe79Si13B8 alloy melt declines 13.5%, thus selects Fe79Si13B8 alloy melt
Overheating Treatment temperature is 1700 DEG C；(2) by Fe79Si13B8 alloy melt with the ramp of 10 DEG C/min to 1700 DEG C and
It is incubated 1 hour under this temperature conditions；
Step 3, pouring temperature rapid solidification that the alloy melt temperature after Overheating Treatment is down to setting obtain amorphous state admittedly
Body alloy thin band: the Fe79Si13B8 alloy melt after 1700 DEG C of Overheating Treatment is cooled to the speed of 60 DEG C/min
1240 DEG C, then Fe79Si13B8 alloy melt is poured into a mould on the quickly cooling copper roller of high speed rotating by nozzle continuously, this copper
The linear velocity on roller surface is 25 meter per seconds, the non-crystalline solids alloy thin band being become thickness to be 32 microns by quick solidification.
A kind of process increasing amorphous alloy strips thickness the most according to claim 1, it is characterised in that described non-
The shape of crystalline solid alloy includes thin ribbon shaped, bar-shaped, lamellar, thread or powder.
A kind of process increasing amorphous alloy strips thickness the most according to claim 2, it is characterised in that described non-
The material of brilliant solid alloy strip be the Fe base in non-crystaline amorphous metal system, Co base, FeNi base, FeCo base, Ni base, Al base, Cu base,
Zr base, Mg base, Pd base, rare earth base, La base, Nd base, Pr base, Ce base, Ti base, Ag base, Au base, Ca base, Y base, Hf base or Gd base.
A kind of process increasing amorphous alloy strips thickness the most according to claim 3, it is characterised in that described non-
The size of crystalline solid alloy thin band is tape thickness 32 microns, bandwidth 50-280 millimeter.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109797352A (en) * | 2019-02-28 | 2019-05-24 | 江苏集萃安泰创明先进能源材料研究院有限公司 | A kind of regulation method of amorphous alloy average atom cluster size |
| CN110181007A (en) * | 2019-06-11 | 2019-08-30 | 江苏中科启航新材料工业研究院有限公司 | A kind of process of regulation iron-based amorphous alloy ribbon material thickness |
| CN110976796A (en) * | 2019-12-24 | 2020-04-10 | 江苏集萃安泰创明先进能源材料研究院有限公司 | Preparation method of amorphous alloy thin strip capable of reducing residual thermal stress |
| CN110976794A (en) * | 2019-12-24 | 2020-04-10 | 江苏集萃安泰创明先进能源材料研究院有限公司 | Process method for increasing thickness of amorphous alloy strip |
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| CN109797352A (en) * | 2019-02-28 | 2019-05-24 | 江苏集萃安泰创明先进能源材料研究院有限公司 | A kind of regulation method of amorphous alloy average atom cluster size |
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| CN110976794B (en) * | 2019-12-24 | 2021-03-16 | 江苏集萃安泰创明先进能源材料研究院有限公司 | Process method for increasing thickness of amorphous alloy strip |
| CN110976796B (en) * | 2019-12-24 | 2021-03-16 | 江苏集萃安泰创明先进能源材料研究院有限公司 | Preparation method of amorphous alloy thin strip capable of reducing residual thermal stress |
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Application publication date: 20170111 |