CN112834307A - High-temperature alloy tensile property sample and preparation method thereof - Google Patents
High-temperature alloy tensile property sample and preparation method thereof Download PDFInfo
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- CN112834307A CN112834307A CN202110271903.3A CN202110271903A CN112834307A CN 112834307 A CN112834307 A CN 112834307A CN 202110271903 A CN202110271903 A CN 202110271903A CN 112834307 A CN112834307 A CN 112834307A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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Abstract
A high-temperature alloy tensile property test sample and a preparation method thereof belong to the technical field of metal test samples. The device comprises a high-temperature alloy sample (1) to be detected, wherein two ends of the high-temperature alloy sample (1) to be detected are clamping ends (2), and a working section (3) is arranged between the clamping ends (2); a patch is attached to the surface of at least the same side of the clamping end (2); the paster is a high-temperature alloy sheet with the thickness of 0.5-0.8mm, and the paster is quadrilateral; the patch is connected to a high-temperature alloy sample to be tested through welding; the center of the patch is provided with a positioning (8). Argon tungsten-arc welding is adopted, the welding current is 60-80A, the inner diameter of an argon pipeline is 1-10mm, and the air pressure is 1-2 atmospheric pressures. The advantage lies in, installs the paster additional through the welded mode to improve the load limit of tensile sample exposed core, not break off with the exposed core in the assurance test process, thereby accomplish high temperature tensile test smoothly.
Description
Technical Field
The invention belongs to the technical field of metal test samples, and particularly relates to a high-temperature alloy tensile property test sample and a preparation method thereof, which are suitable for a foil strip tensile test.
Background
The high-temperature alloy is a metal material with high-temperature strength and good corrosion resistance, a high-temperature alloy finished product generally needs to be tested for tensile property at a specific temperature, and the existing high-temperature tensile property test method refers to GB/T228.2-2015 (a metal material high-temperature tensile property test method).
High temperature alloy cold rolling takes foil product because its thickness is below 1.0mm usually, and higher temperature makes the sample exposed core lose original intensity, and the sample exposed core can lead to the working segment fracture usually when carrying out high temperature tensile test to can't accomplish whole test process.
Disclosure of Invention
The invention provides a high-temperature alloy tensile property sample and a preparation method thereof. The problem of the sample clamping end can be earlier than the working segment fracture, can't accomplish whole test process etc is solved.
The device comprises a high-temperature alloy sample 1 to be detected, wherein two ends of the high-temperature alloy sample 1 to be detected are clamping ends 2, a working section 3 is arranged between the clamping ends 2, and patches are attached to the surfaces of the clamping ends 2 on the same side.
Preferably, the patch is a superalloy sheet with a thickness of 0.5-0.8mm, and the patch is a quadrilateral patch.
Preferably, the patch is connected to the superalloy sample to be tested by welding.
Preferably, the solder joints are located at the four corners of the patch and at the middle of the two sides of the patch.
Preferably, the patches are attached to both faces of each holding end.
Preferably, the patch is the same shape as the grip end.
Preferably, the patch is provided with a positioning hole in the center, and the size of the positioning hole is the same as that of the positioning hole of the clamping end.
Preferably, the size of the superalloy sample to be tested is selected from GB/T228.2-2015.
Preferably, the patch and the superalloy sample to be detected are one of three types of superalloy materials, namely cobalt-based superalloy material, nickel-based superalloy material and iron-based superalloy material.
Preferably, the welding is fusion welding or pressure welding.
Preferably, the welding is gas welding, arc welding, plasma welding, electron beam welding or vacuum diffusion welding.
Preferably, the electric arc welding is argon tungsten-arc welding, a welding gun used in the argon tungsten-arc welding is in a slender taper shape, and the welding is performed by direct current positive polarity.
Preferably, the welding current is 60-80A, the inner diameter of the argon pipeline is 1-10mm, the air pressure is 1-2 atmospheric pressures, the welding time of each welding point is 0.2-1.5 seconds, the distance between a nozzle and a workpiece is not more than 1mm, the radius of a welding pool is less than 2mm, and the radius of a heat affected zone which is visible visually is 1.5-4 mm.
The invention has the following beneficial effects:
the patches are additionally arranged on the two clamping ends of the original sample in a welding mode, so that the bearing limit of the clamping ends of the tensile sample is improved, the clamping ends are prevented from being broken in the test process, and the high-temperature tensile test is smoothly completed. The paster and the high-temperature alloy to be measured are the same base material, welding combination is easy to achieve, the high-temperature strength of the same base material is close, and the paster and the base body can bear tension at the same time to guarantee that the working section is broken preferentially. The invention can adopt argon tungsten-arc welding for welding, has simple operation, high efficiency, good shielding gas isolation effect, stable electric arc and can use small current for welding, can ensure that the patch and the clamping end realize stable metallurgical bonding, and is not easy to generate penetration welding and sample deformation.
Drawings
FIG. 1 shows the sizes of the superalloy samples to be measured.
FIG. 2 is a front view of samples of tensile properties of the superalloy in the first and second embodiments.
FIG. 3 is a side view of a superalloy tensile property specimen in a first embodiment and a second embodiment.
FIG. 4 is a front view of high temperature alloy tensile property test pieces in the third, fourth and fifth embodiments.
FIG. 5 is a side view of high temperature alloy tensile property test specimens in the third, fourth and fifth embodiments.
In the figure, a high-temperature alloy sample to be detected 1, a clamping end 2, a working section 3, a first patch 4, a second patch 5, a third patch 6, a fourth patch 7 and a positioning hole 8.
Detailed Description
Example 1
The utility model provides a superalloy tensile properties sample, includes superalloy sample 1 that awaits measuring, superalloy sample's both ends that await measuring are holding ends 2, are working section 3 between the holding end the upper surface of two holding ends is attached respectively to have paster one 4 and paster two 5. The high-temperature alloy patch is a high-temperature alloy thin plate, the thickness of the patch is 0.8mm, the patch is connected to a high-temperature alloy sample to be tested through gas welding, welding points are located at four corners of the patch and the middle position of two side edges of the patch, a positioning hole 8 is formed in the center of the patch, the size of the positioning hole is the same as that of the positioning hole of the clamping end, the size of the high-temperature alloy sample to be tested is selected from GB/T228.2-2015, and the high-temperature alloy to be tested and the patch are both cobalt-.
Example 2
The utility model provides a superalloy tensile properties sample, includes superalloy sample 1 that awaits measuring, superalloy sample's both ends that await measuring are holding ends 2, are working section 3 between the holding end the upper and lower surface of two holding ends is attached to respectively has paster one 4 and paster two 5. The paster is the superalloy sheet, paster thickness is 0.5mm, the paster passes through arc welding and is connected to the superalloy sample that awaits measuring, open at the paster center has locating hole 8, the size of locating hole with the locating hole size of exposed core is the same, and the superalloy sample that awaits measuring is selected from GB/T228.2-2015, and the superalloy that awaits measuring is iron-based superalloy with the paster.
Example 3
The utility model provides a superalloy tensile properties sample, includes superalloy sample 1 that awaits measuring, superalloy sample's both ends that await measuring are holding ends 2, are working section 3 between the holding end the upper and lower surface of two holding ends is attached respectively and is had paster one 4, paster two 5, paster three 6 and paster four 7. The high-temperature alloy patch is a high-temperature alloy thin plate, the thickness of the patch is 0.5mm, the patch is connected to a high-temperature alloy sample to be detected through vacuum diffusion welding, a positioning hole 8 is formed in the center of the patch, the size of the positioning hole is the same as that of the positioning hole of the clamping end, the size of the high-temperature alloy sample to be detected is selected from GB/T228.2-2015, and the high-temperature alloy to be detected and the patch are nickel-based high-temperature alloy.
Example 4
The utility model provides a superalloy tensile properties sample, includes superalloy sample 1 that awaits measuring, superalloy sample's both ends that await measuring are holding ends 2, are working section 3 between the holding end the upper and lower surface of two holding ends is attached respectively and is had paster one 4, paster two 5, paster three 6 and paster four 7. The paster is a high-temperature alloy thin plate, the thickness of the paster is 0.5mm, the paster is connected to a high-temperature alloy sample to be tested through argon tungsten-arc welding, welding current is 60A, a long and thin conical welding gun is used, direct-current positive polarity welding is adopted, 1 atmosphere of air injection is adopted, the inner diameter of an argon gas pipeline is 1mm, a nozzle is 0.2mm away from a workpiece, welding time of each welding spot is 0.2 second, continuous welding is carried out, welding time and the quantity of molten metal are controlled, the radius of a welding pool is controlled to be 0.5mm on the premise that welding is guaranteed to be completed, the radius of a heat affected area which is visible is controlled to be 1.5mm, and the welding spot is located at four corners, the center of the patch is provided with a positioning hole 8, the size of the positioning hole is the same as that of the positioning hole of the clamping end, the size of the high-temperature alloy sample to be tested is selected from GB/T228.2-2015, and the high-temperature alloy to be tested and the patch are both nickel-based high-temperature alloy.
Example 5
The utility model provides a superalloy tensile properties sample, includes superalloy sample 1 that awaits measuring, superalloy sample's both ends that await measuring are holding ends 2, are working section 3 between the holding end the upper and lower surface of two holding ends is attached respectively and is had paster one 4, paster two 5, paster three 6 and paster four 7. The paster is a high-temperature alloy thin plate, the thickness of the paster is 0.5mm, the paster is connected to a high-temperature alloy sample to be tested through argon tungsten-arc welding, welding current is 80A, a long and thin conical welding gun is used, direct-current positive polarity welding is adopted, 2 atmospheric pressure air injection is adopted, the inner diameter of an argon gas pipeline is 8mm, a nozzle is 1mm away from a workpiece, welding time of each welding spot is 1.5 seconds for continuous welding, welding time and the amount of molten metal are controlled, the radius of a welding pool is controlled to be 2mm on the premise of ensuring that welding is completed, the radius of a heat affected area visible visually is controlled to be 4mm, and the welding spot is located at the four corners of the paster and, the center of the patch is provided with a positioning hole 8, the size of the positioning hole is the same as that of the positioning hole of the clamping end, the size of the high-temperature alloy sample to be tested is selected from GB/T228.2-2015, and the high-temperature alloy to be tested and the patch are both nickel-based high-temperature alloy.
The invention has the following beneficial effects:
the patches are additionally arranged on the two clamping ends of the original sample in a welding mode, so that the bearing limit of the clamping ends of the tensile sample is improved, the clamping ends are prevented from being broken in the test process, and the high-temperature tensile test is smoothly completed. The paster and the high-temperature alloy to be measured are the same base material, welding combination is easy to achieve, the high-temperature strength of the same base material is close, and the paster and the base body can bear tension at the same time to guarantee that the working section is broken preferentially. The invention can adopt argon tungsten-arc welding for welding, has simple operation, high efficiency, good shielding gas isolation effect, stable electric arc and can use small current for welding, can ensure that the patch and the clamping end realize stable metallurgical bonding, and is not easy to generate penetration welding and sample deformation.
It should be noted that the above-mentioned embodiments are only exemplary, and those skilled in the art can make various modifications and variations on the above-mentioned embodiments without departing from the scope of the invention. It will be appreciated by persons skilled in the art that the foregoing detailed description is provided for the purpose of illustrating the invention and is not to be construed as limiting the invention. The scope of the invention is defined by the claims and their equivalents.
Claims (10)
1. The high-temperature alloy tensile property test sample is characterized by comprising a high-temperature alloy sample (1) to be tested, wherein two ends of the high-temperature alloy sample (1) to be tested are clamping ends (2), and a working section (3) is arranged between the clamping ends (2); a patch is attached to the surface of at least the same side of the clamping end (2); the paster is a high-temperature alloy sheet with the thickness of 0.5-0.8mm, and the paster is quadrilateral; the patch is connected to a high-temperature alloy sample to be tested through welding; the center of the patch is provided with a positioning (8).
2. The superalloy tensile property specimen of claim 1, wherein the weld is a fusion weld or a pressure weld.
3. A superalloy tensile property specimen as in claim 1 wherein the weld is a gas weld, an arc weld, a plasma weld, an electron beam weld or a vacuum diffusion weld.
4. A superalloy tensile property specimen as in claim 1 wherein the solder joints are located at the four corners of the patch and midway between the two sides of the patch.
5. A superalloy tensile property specimen as in claim 1 wherein a patch is attached to both faces of each clamping end.
6. A superalloy tensile property specimen according to claim 1, wherein the shape of the patch is the same as the grip end.
7. A superalloy tensile property specimen according to claim 1, wherein the size of the pilot hole (8) is the same as the size of the pilot hole of the clamping end.
8. Superalloy tensile properties specimen as in claim 1, wherein the size of the superalloy specimen 1 to be tested is selected from GB/T228.2-2015.
9. The superalloy tensile property specimen of claim 1, wherein the patch and the superalloy specimen to be tested are one of three types of superalloy materials, cobalt-based, nickel-based, or iron-based.
10. The preparation method of the high-temperature alloy tensile property test sample as claimed in claim 1, characterized in that the two ends of the high-temperature alloy sample (1) to be tested are clamping ends (2), and a working section (3) is arranged between the clamping ends (2); a patch is attached to the surface of at least the same side of the clamping end (2); the paster is a high-temperature alloy sheet with the thickness of 0.5-0.8mm, and the paster is quadrilateral; the patch is connected to a high-temperature alloy sample to be tested through welding; the center of the patch is provided with a positioning part (8);
adopting argon tungsten-arc welding, wherein a welding gun used by the argon tungsten-arc welding is in a slender conical shape, and performing direct-current positive polarity welding; the welding current is 60-80A, the inner diameter of the argon pipeline is 1-10mm, the air pressure is 1-2 atmospheric pressures, the welding time of each welding point is 0.2-1.5 seconds, the distance between a nozzle and a workpiece is not more than 1mm, the radius of a welding pool is less than 2mm, and the radius of a heat affected zone which is visible visually is 1.5-4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110271903.3A CN112834307A (en) | 2021-03-12 | 2021-03-12 | High-temperature alloy tensile property sample and preparation method thereof |
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| CN202110271903.3A CN112834307A (en) | 2021-03-12 | 2021-03-12 | High-temperature alloy tensile property sample and preparation method thereof |
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| CN112834307A true CN112834307A (en) | 2021-05-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114473148A (en) * | 2022-03-22 | 2022-05-13 | 杭州海康威视数字技术股份有限公司 | Thin steel plate vertical welding method and corresponding welding part |
-
2021
- 2021-03-12 CN CN202110271903.3A patent/CN112834307A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114473148A (en) * | 2022-03-22 | 2022-05-13 | 杭州海康威视数字技术股份有限公司 | Thin steel plate vertical welding method and corresponding welding part |
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