CN115575424A - Metal solidification synchrotron radiation imaging device and method under action of external physical field - Google Patents
Metal solidification synchrotron radiation imaging device and method under action of external physical field Download PDFInfo
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Abstract
The invention provides a metal solidification synchrotron radiation imaging device and a method under the action of an external physical field. The device has a relatively simple structure, greatly simplifies the cost and the complexity of an experimental device, effectively reduces the volume of the device, and can realize the composite action of an ultrasonic field, an electric field and a magnetic field.
Description
Technical Field
The invention relates to the technical field of metal solidification synchrotron radiation imaging, in particular to a metal solidification synchrotron radiation imaging device and method under the action of an external physical field.
Background
The solidification process of metal alloys is a complex series of physical processes involving macro-scale heat, solute, momentum transport and micro-scale grain nucleation, dendrite growth, etc. Wherein convection plays an important role in alloy solidification, which generates forces in convection, solute, long-range transport of momentum and on dendrites, causes remelting at the dendrite roots, and exerts a significant effect on dendrite growth and thus microstructure. Due to the characteristics of non-transparency, micro-nano and high temperature in the metal solidification process, dynamic information such as convection, solute diffusion, energy transportation, dendritic crystal growth speed, nucleation mode and the like in the metal solidification process under the action of an external field is difficult to observe, so that the regulation and control rule and the influence mechanism research of the external field on the solidification microstructure are restricted.
The emergence of the in-situ imaging technology of the synchrotron radiation X-ray makes it possible to explore the mechanism of action of an external physical field on a metal solidification structure. The experimental device and the method for alloy solidification under the action of the physical field play a crucial role in imaging effect and experimental data. However, at present, most of the alloy solidification synchrotron radiation imaging uses a packaging crucible, the packaging steps and the method are complicated, an ultrasonic field and an electric field are difficult to apply, and the report of an experimental device and a method for metal solidification synchrotron radiation imaging under the composite action of the ultrasonic field, the electric field and the magnetic field is not seen at present.
Chinese patent CN110082372a discloses a portable synchrotron radiation state in-situ imaging experiment solidification device, which is characterized by better metal safety, lighter weight and better sealing effect. However, the experimental method can only carry out conventional metal solidification synchrotron radiation in-situ observation, cannot apply an external physical field, and is difficult to carry out complex synchrotron radiation in-situ experiments due to small portability, small melt amount and small components.
Therefore, it is necessary to provide a new device and method for metal solidification synchrotron radiation imaging with an additional physical field, which can satisfy the requirements of simultaneously applying a pulse current with a larger current density, a traveling wave magnetic field, an additional ultrasonic wave, and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a metal solidification synchrotron radiation imaging device and a metal solidification synchrotron radiation imaging method under the action of an external physical field, which have a simple structure and are easy to realize.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a metal solidification synchrotron radiation image device under additional physical field effect, includes heating furnace, quartz crucible, pulse electric field device, magnetic field device and ultrasonic field device, quartz crucible sets up in the heating furnace, quartz crucible can realize exerting ultrasonic field, electric field, three kinds of additional physical fields in magnetic field simultaneously.
Optionally, the pulsed electric field device comprises a high-frequency pulse power supply, a consumable electrode, an upper electrode clamp, a copper rod and a lower electrode clamp, the consumable electrode is fixed at the position of the upper adherence wall of the quartz crucible through the upper electrode clamp and is immersed into the melt, the copper rod is connected with the lower electrode clamp to serve as another electrode, one end of the upper electrode clamp is connected with the pulse power supply, the upper electrode clamp, the consumable electrode, the melt and the copper rod form a current path, and when the high-frequency pulse power supply is turned on, pulse current flows through the melt from the vertical direction.
Optionally, the magnetic field device comprises a high-frequency pulse power supply and an electromagnetic coil, a uniform pulse electromagnetic field is formed around the Cramer-type winding in the middle flat area of the quartz crucible, and the melt is subjected to electromagnetic stirring by using electromagnetic stirring force generated by electromagnetic induction.
Optionally, the ultrasonic field device comprises a high-frequency pulse power supply, an ultrasonic generator, an ultrasonic transducer, and an ultrasonic radiation rod, wherein the high-frequency pulse power supply is connected with the ultrasonic generator, the ultrasonic generator converts pulse current into ultrasonic vibration through piezoelectric ceramics or magnetostrictive coils in the ultrasonic transducer, and the ultrasonic vibration is guided into the melt through the ultrasonic radiation rod.
Optionally, the quartz crucible is a dumbbell-shaped thin-walled transparent crucible, the diameters of cylindrical parts at two ends of the quartz crucible are the same, the bottom of the quartz crucible is tightly bonded with a cylindrical copper rod, the bottom of the crucible is sealed and fixed through the copper rod, and a flat channel with the thickness of 0.2-0.5mm is arranged in the middle of the quartz crucible.
Optionally, the metal solidification synchrotron radiation imaging device further comprises a temperature measuring device, the temperature measuring device comprises a platinum-rhodium thermocouple wire and a multi-channel itinerant thermometer connected with the platinum-rhodium thermocouple wire, the platinum-rhodium thermocouple wire is used for measuring the temperature of the melt, and the diameter of the platinum-rhodium thermocouple wire is 0.1-0.2mm.
Optionally, the metal solidification synchrotron radiation imaging device still includes temperature regulating device under the effect of additional physical field, temperature regulating device is including setting up at the outside heat preservation of heating furnace and water cooling plant, water cooling plant includes the water inlet and the delivery port of heating furnace, the water-cooling export and the water-cooling entry of ultrasonic transducer, the heating furnace water inlet is parallelly connected with the water-cooling entry of ultrasonic transducer, and the delivery port of heating furnace is parallelly connected with the delivery port of ultrasonic transducer, and two water inlets all link to each other with water supply installation through resistant hot water pipe, the delivery port all leads to the water tank.
Optionally, the metal solidification synchrotron radiation imaging device under the action of the external physical field further comprises a gas protection device for preventing the melt from being oxidized in the experimental process, and the gas protection device is an argon protection device.
Furthermore, the invention also provides a metal solidification synchrotron radiation imaging method under the action of an external physical field, which comprises the following steps:
opening the ultrasonic device fixing cover, putting the sample into a quartz crucible, adjusting an upper electrode clamp to fix the consumable electrode on the quartz crucible, and covering the ultrasonic device fixing cover;
turning on a power supply of the heating furnace, and heating the placed sample until the sample is molten;
after the sample is melted and is kept warm for a period of time, opening a fixing cover of the ultrasonic device, and connecting a multi-channel itinerant temperature measuring instrument through a platinum-rhodium thermocouple wire to obtain the melting temperature of the sample;
after the display temperature of the multi-channel itinerant temperature measuring instrument reaches the ultrasonic treatment temperature, carrying out heat preservation, adjusting a system positioning platform, and extending an ultrasonic radiation rod into the heating furnace;
turning on a pulse power supply, and simultaneously starting the ultrasonic field device, the magnetic field device and the pulse electric field device to perform a multi-physical field coupling experiment;
the synchronous radiation light source is projected to a sample through the light inlet, and the emergent light carrying sample information is received by the parallel CCD detector to form a clear phase contrast image.
Optionally, the step of obtaining the melting temperature of the sample by connecting a platinum-rhodium thermocouple wire to a multi-channel cyclic thermometer specifically includes: and (3) extending a platinum-rhodium thermocouple wire probe into a specified position of the melt from the thermocouple fixing hole, fixing the thermocouple wire through a nut on the fixing cover, and connecting the other end of the thermocouple wire into the multichannel itinerant thermometer.
Compared with the prior art, the invention has the following advantages:
(1) The pulse current, the pulse magnetic field and the ultrasonic wave can use the same set of pulse power supply, so that the cost and the complexity of the experimental device are greatly simplified, and the volume of the device is effectively reduced.
(2) The current of the invention adopts the copper bar to directly extend into the melt, and compared with other inventions, the invention can realize larger current density, and the pulse current can generate stronger Lorentz force, magnetostriction force and shock wave compared with the common direct current, thereby being beneficial to further influencing the mechanism of the pulse current on the solidification process of the metal melt.
(3) The magnetic field of the invention uses a pulse electromagnetic field, different from a static magnetic field, and the electromagnetic stirring force generated by the pulse electromagnetic field can generate forced convection on a melt, promote dendrite fracture and reduce segregation.
(4) The ultrasonic field of the invention is directly led into the melt through the ultrasonic radiation rod, and the solidification process of the metal under the action of the acoustic flow effect and the acoustic cavitation effect caused by the ultrasonic action can be directly observed.
(5) The platinum-rhodium thermocouple wire is used for measuring the melt temperature, the measurement precision is high, the measurement range is wide, the diameter is thin enough, and the temperature near the synchrotron radiation observation point can be directly measured.
(6) The special quartz crucible can realize the simultaneous application of three physical fields of an ultrasonic field, an electric field and a magnetic field, and the middle flat channel can ensure higher synchronous radiation imaging quality.
(7) The two sets of water cooling systems and the gas protection device can prevent the experimental device from being overheated, can also quickly adjust the temperature rise and fall of the sample, are convenient to adjust the temperature gradient, and can prevent the sample from being oxidized in the melting process under the protection of inert gas.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural diagram of a metal solidification synchrotron radiation imaging apparatus under the action of an external physical field according to an embodiment of the present invention;
FIG. 2 is a partially enlarged front view of a quartz crucible of a metal solidification synchrotron radiation imaging apparatus under the action of an applied physical field according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pulse power supply and a temperature control system of a metal solidification synchrotron radiation imaging apparatus under the action of an applied physical field according to an embodiment of the present invention;
fig. 4 is a flow chart of a metal solidification synchrotron radiation imaging method under the action of an external physical field according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a metal solidification synchrotron radiation imaging device under the action of an external physical field according to an embodiment of the present invention, fig. 2 is a partially enlarged front view of a quartz crucible in the metal solidification synchrotron radiation imaging device under the action of the external physical field according to the embodiment of the present invention, and fig. 3 is a schematic structural diagram of a pulse power supply and a temperature control system of the metal solidification synchrotron radiation imaging device under the action of the external physical field according to the embodiment of the present invention, as shown in fig. 1, fig. 2, and fig. 3, the device includes a heating furnace, a quartz crucible, a pulse electric field device, a magnetic field device, an ultrasonic field device, a temperature measuring device, a temperature control device, a water cooling device, and a gas protection device. In the present embodiment, the gas protection device is an argon gas protection device 4, and inert gas argon gas is used for gas protection.
The upper portion of heating furnace 6 is equipped with fixed lid 13 of ultrasonic device, and the flap is the notch cuttype design, imbeds the ring packing in the middle, covers fixed lid 13 of ultrasonic device after and fixes it on the device main part through the screw and realize the sealed of heating furnace 6, 6 both ends of heating furnace are equipped with light inlet 7 and light-emitting opening 16, light inlet 7 all has temperature resistant transparency to seal with light-emitting opening 16 department, realizes the gas protection in the whole heating furnace through the argon protection device 4 on the fixed lid 13 of ultrasonic device, prevents that the fuse-element from taking place the oxidation in the experimentation.
The temperature measuring device comprises a multi-channel circulating temperature measuring instrument 31 for negative feedback regulation in the heating furnace and a platinum-rhodium thermocouple wire 23 extending into the melt. The multichannel itinerant temperature measuring instrument 31 displays the measured temperature through an LED, the temperature measuring device is connected with the temperature control device 30, and the temperature in the furnace reaches and is stabilized at the set temperature through negative feedback regulation. For the measurement of the melt temperature, the platinum-rhodium thermocouple wires can be reasonably arranged according to the position to be measured and the number of temperature measuring points, and the diameter of the platinum-rhodium thermocouple wires is 0.1-0.3mm.
The water cooling device comprises a water cooling outlet 2 of the ultrasonic transducer 1, a water cooling inlet 3 of the heating furnace 6, a water cooling water outlet 15 and a water inlet 17, wherein a surrounding water cooling channel is embedded in the heating furnace 6, the water inlet of the heating furnace 6 is connected with the water cooling inlet of the ultrasonic transducer 1 in parallel, the water outlet of the heating furnace 6 is connected with the water outlet of the ultrasonic transducer 1 in parallel, cooling water is guided into the water cooling inlet 3 of the ultrasonic transducer 1 and the water inlet 17 of the heating furnace 6 through a heat-resistant water pipe through a water pump, and the water outlet is guided out of a water tank where the water pump is located through a heat-resistant pipe to form a complete water circulation cooling system.
The heating furnace 6 outside is equipped with thicker heat preservation 5, can prevent the temperature outdiffusion, platinum rhodium thermocouple wire 23 is connected to multichannel and patrols thermoscope 31 and is used for real-time supervision fuse-element temperature, thereby temperature regulating device 30 warms up the cooling through adjusting the inside water cooling plant of heating furnace and heating device to the cavity and realize temperature control.
The special quartz crucible 21 is a dumbbell-shaped thin-wall transparent crucible, the dumbbell shape is designed to meet the requirement that enough space is arranged above the special quartz crucible for ultrasonic treatment of a melt and pulse current treatment in the vertical direction, and meanwhile, the flat area in the middle enables synchronous X-ray imaging to be clearer, so that the success rate of in-situ observation of the metal microstructure evolution process under the action of multiple physical fields is improved. A flat channel with the thickness of 0.2-0.5mm exists in the middle of the quartz crucible 21, the thickness of the flat channel is smaller than 0.2mm, accurate temperature measurement cannot be carried out on the middle flat area through a thermocouple wire, and the synchrotron radiation imaging quality is influenced when the thickness of the flat channel is larger than 0.5 mm. The diameters of the cylindrical parts at the two ends of the quartz crucible 21 are the same, and in order to ensure better ultrasonic radiation quality, the diameter of the cylindrical part is 3-5 times of that of the ultrasonic radiation rod. The bottom of the aluminum alloy is tightly adhered with the cylindrical copper bar 8, so that the aluminum liquid is prevented from leaking from the bottom when heated to 850 ℃ in the experiment. The bottom of the copper rod 8 is connected with the sample table 9, and the bottom is sealed and fixed through the copper rod 8. The sample stage 9 is connected with a height adjusting device 11 and a base 12 through a screw rod 10, and the up-and-down movement of the sample stage can be realized. In addition, the copper bar 8 also serves as a lower electrode in the pulse electric field, and the copper bar 8 is connected to one end of a high-frequency pulse power supply 28 by using a lead. An upper electrode clamp 20 is bonded on the upper part of the quartz crucible 21, the upper electrode clamp 20 is bonded on the upper part of the quartz crucible 21, so that the consumable electrode 19 can be attached to the wall and vertically fixed, and the platinum-rhodium thermocouple wire 23 and the ultrasonic radiation rod 18 are arranged in a space as much as possible. The consumable electrode 19 is held by the upper electrode holder 20 to be submerged in the melt 22 by about 10mm, ensuring that the consumable electrode 19 is in good contact with the melt. The tail end of the upper electrode clamp 20 is connected with the other end of the pulse power supply 28, the upper electrode clamp 20, the consumable electrode 19, the melt 22 and the copper bar 8 form a passage, a direct current electric field and a pulse electric field of current density can be realized, and meanwhile, the influence of dendrite movement caused by gravity factors on electrode contact in the solidification process can be prevented by adjusting the depth of the consumable electrode 19.
The pulse electric field device comprises a high-frequency pulse power supply 28, a transformer 27, a consumable electrode 19, an upper electrode clamp 20 and a lower electrode clamp 25, wherein the consumable electrode 19 is fixed at the position of the upper wall of a quartz crucible 21 by the upper electrode clamp 20 and is immersed into a melt by about 10mm, and a lower copper rod 8 plays a role in sealing and is connected with the lower electrode clamp 25 to serve as the other electrode. When the high-frequency pulse power supply is started, pulse current flows through the melt from the vertical direction, and a stable pulse electric field is generated in an observation area in the middle of the crucible.
The magnetic field device comprises a high-frequency pulse power supply 28 and an electromagnetic coil 24, and a uniform traveling-wave magnetic field is formed around a Cramer type winding in the middle flat area of the quartz crucible 21. Because of the flat region surrounding the center, the Cramer winding is elliptically wound, keeping its distance from the quartz crucible wall as close as possible. The winding is arranged to avoid the light inlet and the light outlet, and the thread pitch is larger than the diameter of the synchronous radiation light spot, so that the synchronous radiation light is prevented from being blocked.
The ultrasonic field device comprises a high-frequency pulse power supply 28, an ultrasonic transducer 1 and an ultrasonic radiation rod 18. The flange of the ultrasonic transducer 1 is fixed on the ultrasonic device fixing cover 13 through screws, the pulse power supply 28 and the ultrasonic transducer 1 are turned on, the ultrasonic generator converts pulse current into ultrasonic vibration through piezoelectric ceramics or magnetostrictive coils in the ultrasonic transducer 1, and the ultrasonic vibration is introduced into the melt through the ultrasonic radiation rod 18.
Fig. 4 is a flow chart of a metal solidification synchrotron radiation method under the action of an external physical field according to an embodiment of the present invention, as shown in fig. 4, the method includes the following steps:
s1: opening the fixing cover of the ultrasonic device, putting the sample into the quartz crucible, adjusting the upper electrode clamp to fix the consumable electrode in the quartz crucible, and covering the fixing cover of the ultrasonic device;
s2: turning on a power supply of the heating furnace, and heating the placed sample until the sample is molten;
s3: opening a fixing cover of an ultrasonic device after a sample is melted and is kept warm for a period of time, and connecting a multi-channel itinerant temperature measuring instrument through a platinum-rhodium thermocouple wire to obtain the melting temperature of the sample;
specifically, a platinum-rhodium thermocouple wire probe extends into a specified position in the melt 22 from the thermocouple fixing hole 14, then the thermocouple wire is fixed through a nut on a fixing cover, and the other end of the thermocouple wire is connected into the multi-channel itinerant thermometer 31.
S4: after the temperature displayed by the multi-channel itinerant temperature measuring instrument reaches the ultrasonic treatment temperature, carrying out heat preservation, adjusting a system positioning platform, and extending an ultrasonic radiation rod into the heating furnace;
s5: turning on a pulse power supply, and simultaneously starting the ultrasonic field device, the magnetic field device and the pulse electric field device to perform a multi-physical field coupling experiment;
s6: the synchronous radiation light source is projected to a sample through the light inlet, and the emergent light carrying sample information is received by the parallel CCD detector to form a clear phase contrast image.
Compared with the prior art, the invention realizes the multi-physical field coupling metal solidification synchronous radiation imaging of the pulse electric field, the magnetic field and the ultrasonic field, and effectively solves the current situation that the metal solidification synchronous radiation imaging device and the method are blank under the coupling of the multi-field coupling, particularly the coupling of the ultrasonic field and other physical fields.
The invention has the following advantages:
(1) The pulse current, the pulse magnetic field and the ultrasonic wave can use the same set of pulse power supply, so that the cost and the complexity of the experimental device are greatly simplified, and the volume of the device is effectively reduced.
(2) The current of the invention adopts the copper bar to directly extend into the melt, and compared with other inventions, the invention can realize larger current density, and the pulse current can generate stronger Lorentz force, magnetostriction force and shock wave compared with the common direct current, thereby being beneficial to further influencing the mechanism of the pulse current on the solidification process of the metal melt.
(3) The magnetic field of the invention uses a pulse electromagnetic field, different from a static magnetic field, and the electromagnetic stirring force generated by the pulse electromagnetic field can generate forced convection on a melt, promote dendrite fracture and reduce segregation.
(4) The ultrasonic field of the invention is directly led into the melt through the ultrasonic radiation rod, and the solidification process of the metal under the action of the acoustic flow effect and the acoustic cavitation effect caused by the ultrasonic action can be directly observed.
(5) The platinum-rhodium thermocouple wire is used for measuring the melt temperature, the measurement precision is high, the measurement range is wide, the diameter is thin enough, and the temperature near the synchrotron radiation observation point can be directly measured.
(6) The special quartz crucible can realize the simultaneous application of three physical fields of an ultrasonic field, an electric field and a magnetic field, and the middle flat channel can ensure higher synchronous radiation imaging quality.
(7) The two sets of water cooling systems and the gas protection device can prevent the experiment device from being overheated, can quickly adjust the temperature rise and fall of the sample, are convenient to adjust the temperature gradient, and can prevent the sample from being oxidized in the melting process under the protection of inert gas.
The foregoing description has described specific embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The utility model provides a metal solidifies synchrotron radiation image device under external physical field effect which characterized in that, the device includes heating furnace, quartz crucible, pulse electric field device, magnetic field device and ultrasonic field device, quartz crucible sets up in the heating furnace, quartz crucible can realize exerting ultrasonic field, electric field, three kinds of external physical fields in magnetic field simultaneously.
2. The device of claim 1, wherein the pulsed electric field device comprises a high-frequency pulse power supply, a consumable electrode, an upper electrode holder, a copper rod, and a lower electrode holder, the consumable electrode is fixed at the position of the upper adherence wall of the quartz crucible by the upper electrode holder and submerged into the melt, the copper rod is connected with the lower electrode holder as another electrode, one end of the upper electrode holder is connected with the pulse power supply, the upper electrode holder, the consumable electrode, the melt, and the copper rod form a current path, and when the high-frequency pulse power supply is turned on, the pulse current flows through the melt from the vertical direction.
3. The device for synchronously radiating and imaging metal solidification under the action of the external physical field as claimed in claim 1, wherein the magnetic field device comprises a high-frequency pulse power supply and an electromagnetic coil, a uniform pulse electromagnetic field is formed around a Cramer type winding in a middle flat area of a quartz crucible, and the melt is electromagnetically stirred by using the electromagnetic stirring force generated by the electromagnetic induction.
4. The imaging device of claim 1, wherein the ultrasonic field device comprises a high-frequency pulse power supply, an ultrasonic generator, an ultrasonic transducer, and an ultrasonic radiation rod, the high-frequency pulse power supply is connected to the ultrasonic generator, the ultrasonic generator converts pulse current into ultrasonic vibration through a piezoelectric ceramic or a magnetostrictive coil in the ultrasonic transducer, and the ultrasonic vibration is introduced into the melt through the ultrasonic radiation rod.
5. The device as claimed in claim 1, wherein the quartz crucible is a dumbbell-shaped thin-walled transparent crucible, the diameter of the cylindrical parts at both ends of the quartz crucible is the same, the bottom of the quartz crucible is tightly adhered to a cylindrical copper bar, the bottom of the crucible is sealed and fixed by the copper bar, and a flat passage with a thickness of 0.2-0.5mm is arranged in the middle of the quartz crucible.
6. The device for imaging the metal solidification synchronous radiation under the action of the external physical field according to claim 1, wherein the device for imaging the metal solidification synchronous radiation under the action of the external physical field further comprises a temperature measuring device, the temperature measuring device comprises a platinum-rhodium thermocouple wire and a multi-channel itinerant thermometer connected with the platinum-rhodium thermocouple wire, the platinum-rhodium thermocouple wire is used for measuring the temperature of a melt, and the diameter of the platinum-rhodium thermocouple wire is 0.1-0.2mm.
7. The imaging device according to claim 1, further comprising a temperature control device, wherein the temperature control device comprises a thermal insulation layer and a water cooling device arranged outside the heating furnace, the water cooling device comprises a water inlet and a water outlet of the heating furnace, a water cooling outlet and a water cooling inlet of the ultrasonic transducer, the water inlet of the heating furnace is connected in parallel with the water cooling inlet of the ultrasonic transducer, the water outlet of the heating furnace is connected in parallel with the water outlet of the ultrasonic transducer, both water inlets are connected with the water supply device through a heat-resistant water pipe, and the water outlet is communicated with the water tank.
8. The apparatus according to claim 1, further comprising a gas protection device for preventing oxidation of the melt during the experiment, wherein the gas protection device is an argon gas protection device.
9. A metal solidification synchrotron radiation imaging method under the action of an external physical field is characterized by comprising the following steps:
opening the fixing cover of the ultrasonic device, putting the sample into the quartz crucible, adjusting the upper electrode clamp to fix the consumable electrode on the quartz crucible, and covering the fixing cover of the ultrasonic device;
turning on a power supply of the heating furnace, and heating the placed sample until the sample is molten;
opening a fixing cover of an ultrasonic device after a sample is melted and is kept warm for a period of time, and connecting a multi-channel itinerant temperature measuring instrument through a platinum-rhodium thermocouple wire to obtain the melting temperature of the sample;
after the display temperature of the multi-channel itinerant temperature measuring instrument reaches the ultrasonic treatment temperature, carrying out heat preservation, adjusting a system positioning platform, and extending an ultrasonic radiation rod into the heating furnace;
turning on a pulse power supply, and simultaneously starting the ultrasonic field device, the magnetic field device and the pulse electric field device to perform a multi-physical field coupling experiment;
the synchronous radiation light source is projected to a sample through the light inlet, and the emergent light carrying sample information is received by the parallel CCD detector to form a clear phase contrast image.
10. The method for metal solidification synchrotron radiation imaging under the action of an applied physical field according to claim 9, wherein the step of obtaining the melting temperature of the sample by connecting a platinum-rhodium thermocouple wire with a multi-channel cyclic thermometer specifically comprises: and (3) extending a platinum-rhodium thermocouple wire probe into a specified position of the melt from the thermocouple fixing hole, fixing the thermocouple wire through a nut on the fixing cover, and connecting the other end of the thermocouple wire into the multichannel itinerant thermodetector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211187171.0A CN115575424A (en) | 2022-09-28 | 2022-09-28 | Metal solidification synchrotron radiation imaging device and method under action of external physical field |
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| CN202211187171.0A CN115575424A (en) | 2022-09-28 | 2022-09-28 | Metal solidification synchrotron radiation imaging device and method under action of external physical field |
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| CN (1) | CN115575424A (en) |
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2022
- 2022-09-28 CN CN202211187171.0A patent/CN115575424A/en active Pending
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