CN106226307A - A kind of method measuring 617 nickel-base alloy heat affected area length - Google Patents
A kind of method measuring 617 nickel-base alloy heat affected area length Download PDFInfo
- Publication number
- CN106226307A CN106226307A CN201610522011.5A CN201610522011A CN106226307A CN 106226307 A CN106226307 A CN 106226307A CN 201610522011 A CN201610522011 A CN 201610522011A CN 106226307 A CN106226307 A CN 106226307A
- Authority
- CN
- China
- Prior art keywords
- heat affected
- affected area
- nickel
- base alloy
- alloy heat
- 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
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of method measuring 617 nickel-base alloy heat affected area length, prepare metallographic specimen, described metallographic specimen under microscopic visualization, records the length of 617 described nickel-base alloy heat affected areas；The metamorphosis of the nearly seam region carbide of metallographic specimen welding point is observed by microscope, i.e. combine the changing features around carbide, determine the boundary line of described heat affected area and 617 described nickel-base alloy mother metals, obtain the distance between described boundary line and melt run, be the length of described heat affected area.The present invention solves the difficult problem that the length of 617 nickel-base alloy heat affected areas is difficult to measure, and provides a kind of simpler, measuring method accurately simultaneously, provides help to the scientific research in this field.
Description
Technical field
The present invention relates to welding field, particularly to a kind of method measuring 617 nickel-base alloy heat affected area length, be suitable for
In 617 nickel-base alloys heat affected area measurement of length under various welding methods.
Background technology
617 nickel-base alloys are the Ni-Cr-Co-Mo type high temperature alloys based on solution strengthening, have higher creep strong
The fields such as degree, superior high temperature oxidation resisting ability and high-temperature stability, be mainly used in the space flight under hot environment, power station, be
A kind of preferably high-temperature material.Welding is the method for manufacturing of a kind of high rate/low cost production, such as power station steam turbine rotor
Material uses 617 nickel-base alloys, and manufacture method uses argon tungsten-arc welding to prepare.But welding there is also some shortcomings simultaneously, such as weldering
Connect the defects such as overheated zone, heat affected area, the grain coarsening of fusion area and liquation crack, so to 617 nickel-base alloy heat affected area groups
Knit and the research of performance is necessary.
617 nickel-base alloys are different from traditional steel, and the tissue of its heat affected area is austenite as mother metal, its crystal grain
Length compared with mother metal without significant change, additionally, by hardness test, its hardness also with mother metal without being clearly distinguished from.Therefore, existing
Technology is difficult to provide a kind of method measuring 617 nickel-base alloy heat affected area length.
Summary of the invention
The present invention provides a kind of method measuring 617 nickel-base alloy heat affected area length, to solve to measure in prior art
The difficulty of 617 nickel-base alloy heat affected area length.
Technical scheme is as follows:
A kind of method measuring 617 nickel-base alloy heat affected area length, prepares metallographic specimen, and described metallographic specimen is aobvious
Under micro mirror is observed, determine the boundary line of described heat affected area and 617 described nickel-base alloy mother metals, described boundary line and melt run
Between the length that distance is described heat affected area, described boundary line is according to the polygon rule shape of the carbide of described mother metal
The carbide of shape and described heat affected area irregularly shaped and determine.
Further preferably, described metallographic specimen being cut by line successively, heat is inlayed, roughly grinds, is refined, rough polishing, fine polishing,
Corrosion prepares.
Further preferably, described line cutting step is described in the cutting of size design lines 617 according to pointing machine sample preparation
The size of the welding point of nickel-base alloy.
Further preferably, last one waterproof abrasive paper granularity of described precision grinding step is 2000# model.
Further preferably, the diamond polishing cream that antiscuffing paste is W2.5 of described fine polishing step.
Further preferably, the corrosion reagent of described corrosion step is Kalling reagent.
Further preferably, in the case of described metallographic specimen is thermally treated, described boundary line is herein in connection with described hot shadow
Ring and around district's carbide, observe that the short grained texturing feature of precipitation further determines that.Specifically, energy in described heat affected area
Enough observe and around carbide, separate out short grained texturing shape feature, and in mother metal, around carbide, there is not texturing feature.
Further preferably, in the case of described metallographic specimen is the most thermally treated, described metallographic specimen is the most thermally treated
In the case of, described boundary line herein in connection with described heat affected area carbide around, under light microscopic, observe herpes shape and at electricity
Microscopic observation further determines that to the annular composition diffusion region feature of recess.Specifically, can see in described heat affected area
Observe the annular composition diffusion region spy that there will be herpes shape (under om observation) or recess (under electron microscopic observation) around carbide
Levy.
Further preferably, described microscope is at least amplified to 1000 times.
Further preferably, described microscope is scanning electron microscope.
Compared with prior art, beneficial effects of the present invention is as follows:
The method of a kind of measurement 617 nickel-base alloy heat affected area length of the present invention, first to 617 nickel-based alloy sample warps
The steps such as line cutting obtain metallographic specimen, and described metallographic specimen under microscopic visualization, determines described heat affected area and institute
The boundary line of the mother metal of 617 nickel-base alloys stated, the distance between described boundary line and melt run is the length of described heat affected area,
The present invention solves the difficult problem that the length of 617 nickel-base alloy heat affected areas is difficult to measure, and provides a kind of simpler, accurate simultaneously
Measuring method, provide help to the scientific research in this field.
Certainly, the either method implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Accompanying drawing explanation
Fig. 1 is the method for a kind of measurement 617 nickel-base alloy heat affected area length of the present invention, with argon tungsten-arc welding and postwelding
The thermally treated metallograph under optical microscope；
Fig. 2 is the method for a kind of measurement 617 nickel-base alloy heat affected area length of the present invention, with argon tungsten-arc welding and postwelding
The thermally treated metallograph under scanning electron microscope；
Fig. 3 is the method for a kind of measurement 617 nickel-base alloy heat affected area length of the present invention, with argon tungsten-arc welding and postwelding
The most thermally treated metallograph under optical microscope；
Fig. 4 is the method for a kind of measurement 617 nickel-base alloy heat affected area length of the present invention, with argon tungsten-arc welding and postwelding
The most thermally treated metallograph under scanning electron microscope；
Fig. 5 is the method for a kind of measurement 617 nickel-base alloy heat affected area length of the present invention, with optical-fiber laser weldering and postwelding
The thermally treated metallograph under optical microscope；
Fig. 6 is the method for a kind of measurement 617 nickel-base alloy heat affected area length of the present invention, with optical-fiber laser weldering and postwelding
The thermally treated metallograph under scanning electron microscope；
Fig. 7 is the method for a kind of measurement 617 nickel-base alloy heat affected area length of the present invention, with optical-fiber laser weldering and postwelding
The most thermally treated metallograph under optical microscope；
Fig. 8 is the method for a kind of measurement 617 nickel-base alloy heat affected area length of the present invention, with optical-fiber laser weldering and postwelding
The most thermally treated metallograph under scanning electron microscope.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate this
Bright, rather than limit protection scope of the present invention.Those skilled in the art are according to changing that the present invention makes in actual applications
Enter and adjust, still falling within protection scope of the present invention.
A kind of method measuring 617 nickel-base alloy heat affected area length, obtains metallographic specimen, described metallographic by cutting
Sample under microscopic visualization, records the length of 617 described nickel-base alloy heat affected areas.
Described metallographic specimen is prepared by following steps:
(1) line cutting: according to the length of pointing machine sample preparation, the welding point of 617 nickel-base alloys described in design lines cutting
Size；
(2) heat is inlayed: ultrasonic waves for cleaning sample, removes surface and oil contaminant, then carries out inlaying sample with hot pointing machine；
(3) roughly grind, refine: the waterproof abrasive paper using granularity to be 180#, 400#, 800#, 1200#, 1500#, 2000# successively enters
Row corase grind and fine grinding；
(4) rough polishing, fine polishing: first use the diamond polishing cream of W5 to carry out rough polishing on canvas, treat any surface finish no marking
After, then use the diamond polishing cream of W2.5 to carry out fine polishing on undercoat woollen goods；
(5) corrosion: first with alcohol washes, and dry up, then uses Kalling reagent (100ml HCl+100ml C2H5OH
+5g CuCl2) corrode, after corroding, with alcohol washes and dry up, i.e. prepare described metallographic specimen.
Then being placed under microscope by the metallographic specimen described in prepared, the welding point of the metallographic specimen described in observation is near
Seam region, the form of the carbide that heat affected area be can be observed there occurs significant change relative to the form of the carbide of mother metal,
The carbide of mother metal is polygon regular shape, and the carbide of heat affected area is irregularly shaped, therefore can be according to described
The shape of mother metal carbide and the shape of described heat affected area carbide determine described heat affected area and 617 described nickel
Distance between the boundary line of base alloy mother metal, and available described boundary line and melt run, is the length of described heat affected area.
Additionally, described boundary can be further determined that according to the following phenomenon observed, when 617 described nickel-base alloys are thermally treated,
The short grained texturing feature of precipitation is there will be around the carbide of described heat affected area；617 described nickel-base alloys are without warm
During process, around the carbide of described heat affected area, there will be herpes shape (under om observation) or recess (under electron microscopic observation)
Annular composition diffusion region feature.
Embodiment 1
The welding point mother metal of the present embodiment is 617 nickel-base alloy sheet materials, and filler wire is ENiCrCoMo-1, welding side
Method uses tungsten argon arc narrow gap welding and postwelding thermally treated.The length of 617 described nickel-base alloy heat affected areas is by following
Step records:
Step one: the preparation of described metallographic specimen, is prepared by following steps:
(1) line cutting: according to the Design of length line of pointing machine sample preparation cut described in the welding point of 617 nickel-base alloys
Size, line cut lengths are the weld joint samples of 25mm × 12mm × 5mm；
(2) heat is inlayed: ultrasonic waves for cleaning sample, removes surface and oil contaminant, then carries out inlaying sample with hot pointing machine, prepare diameter
For 30mm, thickness be 13mm inlay sample；
(3) roughly grind, refine: the waterproof abrasive paper using granularity to be 180#, 400#, 800#, 1200#, 1500#, 2000# successively enters
Row corase grind and fine grinding, treat that sample surfaces is bright and clean, is polished after lines is consistent again；
(4) rough polishing, fine polishing: first use the diamond polishing cream of W5 to carry out rough polishing on canvas, treat any surface finish no marking
After, use the diamond polishing cream of W2.5 to carry out fine polishing on undercoat woollen goods；
(5) corrosion: specimen surface is bright and clean as after mirror, first with alcohol washes, dry up, then employing Kalling reagent
(100ml HCl+100ml C2H5OH+5g CuCl2) corrodes, after corroding, then with alcohol washes and dry up, the most prepared
Described metallographic specimen.
Step 2: under the microscope, observes metallographic specimen
Region is closely stitched, at 1000 times by the welding point of optical microscope or sem observation metallographic specimen
The form of the carbide that heat affected area be can be observed under amplification there occurs substantially change relative to the form of the carbide of mother metal
Changing, the carbide of mother metal is polygon regular shape, and the carbide of heat affected area is irregularly shaped, with heat affected zone carbon
Short grained texturing feature can be separated out around compound.Thus may determine that, described heat affected area and 617 described nickel-base alloys
The boundary line (as shown in be positioned at the white dashed line on right side in Fig. 1 a) of mother metal, described boundary line and melt run are (such as left side in Fig. 1 a
White dashed line shown in) between the length that distance is described heat affected area (HAZ) be about 150 μm, the metallographic of optical microscope
Figure, as it is shown in figure 1, the B district enlarged drawing that Fig. 1 b is Fig. 1 a；The metallograph of scanning electron microscope, as in figure 2 it is shown, Fig. 2 b, 2c are
B and the C district enlarged drawing of Fig. 2 a；In Fig. 1 and Fig. 2, WM represents weld seam, and HAZ represents heat affected area, and BM represents mother metal；In order to enable more
Add the shape difference of the carbide clearly observing heat affected area and the carbide in mother metal, be placed in more high-amplification-factor
Observe under scanning electron microscope, then obtain relatively reliable result.
Embodiment 2
The welding point mother metal of the present embodiment is 617 nickel-base alloy sheet materials, and filler wire is ENiCrCoMo-1, welding side
Method uses tungsten argon arc narrow gap welding and postwelding the most thermally treated.The linear measure longimetry step of 617 described nickel-base alloy heat affected areas
Rapid one, two processes are same as in Example 1.
Region is closely stitched, at 1000 times by the welding point of optical microscope or sem observation metallographic specimen
The form of the carbide that heat affected area be can be observed under amplification there occurs substantially change relative to the form of the carbide of mother metal
Changing, the carbide of mother metal is polygon regular shape, and the carbide of heat affected area is irregularly shaped, heat affected area carbide
Around also can observe the annular composition diffusion region feature of herpes shape (under om observation) or recess (under electron microscopic observation).Therefore
It was determined that the boundary line of the mother metal of described heat affected area and 617 described nickel-base alloys is (such as the white dashed line on right side in Fig. 3 a
Shown in), the distance between described boundary line and melt run (shown in the left side white dashed line in Fig. 3 a) be as described in heat affected area
(HAZ) length is about 220 μm, the metallograph of optical microscope, as it is shown on figure 3, the B district enlarged drawing that Fig. 3 b is Fig. 3 a；Scanning
The metallograph of ultramicroscope, as shown in Figure 4, Fig. 4 b is the B district enlarged drawing of Fig. 4 a；In Fig. 3 and Fig. 4, WM represents weld seam, HAZ
Representing heat affected area, BM represents mother metal；In order to enable the carbide more clearly observing heat affected area and the carbonization in mother metal
The shape difference of thing, is placed under the scanning electron microscope of more high-amplification-factor observing, then obtains relatively reliable result.
Embodiment 3
The welding point mother metal of the present embodiment is 617 nickel-base alloy sheet materials, and welding method uses optical-fiber laser weldering and postwelding
Thermally treated.Described the linear measure longimetry step one of 617 nickel-base alloy heat affected areas, two processes are same as in Example 1.
Region is closely stitched, at 1000 times by the welding point of optical microscope or sem observation metallographic specimen
The form of the carbide that heat affected area be can be observed under amplification there occurs substantially change relative to the form of the carbide of mother metal
Changing, the carbide of mother metal is polygon regular shape, and the carbide of heat affected area is irregularly shaped, heat affected area carbide
Around can separate out short grained texturing feature.Thus may determine that, described heat affected area and the mother of 617 described nickel-base alloys
The boundary line (as shown in the white dashed line on right side in Fig. 5 a) of material, described boundary line is (as empty in the left side white in Fig. 5 a with melt run
Shown in line) between the length that distance is described heat affected area (HAZ) be about 120 μm, the metallograph of optical microscope, such as Fig. 5
Shown in, Fig. 5 b is the B district enlarged drawing of Fig. 5 a；The metallograph of scanning electron microscope, as shown in Figure 6, Fig. 6 b, 6c are the B of Fig. 6 a
With C district enlarged drawing；In Fig. 5 and Fig. 6, WM represents weld seam, and HAZ represents heat affected area, and BM represents mother metal；In order to enable more clearly
Observe the carbide of heat affected area and the shape difference of the carbide in mother metal, be placed in the scanning electron microscope of more high-amplification-factor
Lower observation, obtains relatively reliable result then.
Embodiment 4
The welding point mother metal of the present embodiment is 617 nickel-base alloy sheet materials, and welding method uses optical-fiber laser weldering and postwelding
The most thermally treated.Described the linear measure longimetry step one of 617 nickel-base alloy heat affected areas, two processes are same as in Example 1.
Region is closely stitched, at 1000 times by the welding point of optical microscope or sem observation metallographic specimen
The form of the carbide that heat affected area be can be observed under amplification there occurs substantially change relative to the form of the carbide of mother metal
Changing, the carbide of mother metal is polygon regular shape, and the carbide of heat affected area is irregularly shaped, heat affected area carbide
Around also can observe the annular composition diffusion region feature of herpes shape (under om observation) or recess (under electron microscopic observation).Therefore
It was determined that the boundary line of described heat affected area and 617 described nickel-base alloy mother metals is (such as the right side white dashed line institute in Fig. 7 a
Show), the distance between described boundary line and melt run (shown in the left side white dashed line in Fig. 7 a) be as described in heat affected area
(HAZ) length is about 150 μm, the metallograph of optical microscope, as it is shown in fig. 7, the B district enlarged drawing that Fig. 7 b is Fig. 7 a；Scanning
The metallograph of ultramicroscope, as shown in Figure 8, Fig. 8 b is the B district enlarged drawing of Fig. 8 a；In Fig. 7 and Fig. 8, WM represents weld seam, HAZ
Representing heat affected area, BM represents mother metal；In order to enable the carbide more clearly observing heat affected area and the carbonization in mother metal
The shape difference of thing, is placed under the scanning electron microscope of more high-amplification-factor observing, then obtains relatively reliable result.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.Preferred embodiment is the most detailed
Describe all of details, be also not intended to the detailed description of the invention that this invention is only described.Obviously, according to the content of this specification,
Can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is to preferably explain the present invention
Principle and actual application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and four corner thereof and equivalent.
Claims (10)
1. the method measuring 617 nickel-base alloy heat affected area length, it is characterised in that prepare the metallographic described in metallographic specimen
Sample under microscopic visualization, determines the boundary line of described heat affected area and 617 described nickel-base alloy mother metals, described boundary line
And the length that the distance between melt run is described heat affected area, described boundary line is polygon according to the carbide of described mother metal
The carbide of shape regular shape and described heat affected area irregularly shaped and determine.
A kind of method measuring 617 nickel-base alloy heat affected area length the most according to claim 1, it is characterised in that institute
The metallographic specimen stated being cut by line successively, heat is inlayed, roughly grinds, is refined, rough polishing, fine polishing, corrosion prepare.
A kind of method measuring 617 nickel-base alloy heat affected area length the most according to claim 2, it is characterised in that institute
The line cutting step stated is the chi of the welding point of 617 nickel-base alloys described in the cutting of size design lines according to pointing machine sample preparation
Very little.
A kind of method measuring 617 nickel-base alloy heat affected area length the most according to claim 2, it is characterised in that institute
Last one waterproof abrasive paper granularity of the precision grinding step stated is 2000# model.
A kind of method measuring 617 nickel-base alloy heat affected area length the most according to claim 2, it is characterised in that institute
The diamond polishing cream that antiscuffing paste is W2.5 of the fine polishing step stated.
A kind of method measuring 617 nickel-base alloy heat affected area length the most according to claim 2, it is characterised in that institute
The corrosion reagent of the corrosion step stated is Kalling reagent.
A kind of method measuring 617 nickel-base alloy heat affected area length the most according to claim 1, it is characterised in that institute
In the case of the metallographic specimen stated is thermally treated, analysis is observed herein in connection with around described heat affected area carbide in described boundary line
Go out short grained texturing feature to further determine that.
A kind of method measuring 617 nickel-base alloy heat affected area length the most according to claim 1, it is characterised in that institute
In the case of the metallographic specimen stated is the most thermally treated, described boundary line herein in connection with described heat affected area carbide around, at light
Microscopic observation is to herpes shape and observes that under Electronic Speculum the annular composition diffusion region feature of recess further determines that.
A kind of method measuring 617 nickel-base alloy heat affected area length the most according to claim 1, it is characterised in that institute
The microscope stated at least is amplified to 1000 times.
A kind of method measuring 617 nickel-base alloy heat affected area length the most according to claim 1, it is characterised in that institute
The microscope stated is scanning electron microscope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610522011.5A CN106226307A (en) | 2016-07-05 | 2016-07-05 | A kind of method measuring 617 nickel-base alloy heat affected area length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610522011.5A CN106226307A (en) | 2016-07-05 | 2016-07-05 | A kind of method measuring 617 nickel-base alloy heat affected area length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106226307A true CN106226307A (en) | 2016-12-14 |
Family
ID=57520238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610522011.5A Pending CN106226307A (en) | 2016-07-05 | 2016-07-05 | A kind of method measuring 617 nickel-base alloy heat affected area length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106226307A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796818A (en) * | 2018-01-23 | 2018-03-13 | 湖南泰嘉新材料科技股份有限公司 | The method of on-line checking bi-metal bandsaw blades welding quality |
| CN108445055A (en) * | 2018-03-27 | 2018-08-24 | 哈尔滨工业大学 | A kind of method of quick measurement Al-Mg-Si system alloy welding point softened region |
| CN109211628A (en) * | 2018-09-05 | 2019-01-15 | 中国航发动力股份有限公司 | A kind of microscopic detection method for cast superalloy level of creep |
| CN112162078A (en) * | 2020-09-23 | 2021-01-01 | 西安热工研究院有限公司 | On-site detection method for repair welding area of outer surface of high-temperature and high-pressure pipe fitting |
| CN114486893A (en) * | 2022-01-20 | 2022-05-13 | 中电华创(苏州)电力技术研究有限公司 | Method for judging butt joint welding seam and heat affected zone of ground extra height |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020031164A1 (en) * | 2000-03-17 | 2002-03-14 | Michael Scheidt | Method and apparatus for photothermal analysis of a layer of material, especially for thickness measurement thereof |
| CN104062188A (en) * | 2014-06-26 | 2014-09-24 | 上海交通大学 | Method for measuring fracture toughness J<IC> of heat affected zone of welded joint |
| CN104833676A (en) * | 2015-04-27 | 2015-08-12 | 扬州大学 | Metallographic microscopic technology capable of precisely determining boundary of thermally influenced area after TRIP steel resistance spot-welding |
-
2016
- 2016-07-05 CN CN201610522011.5A patent/CN106226307A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020031164A1 (en) * | 2000-03-17 | 2002-03-14 | Michael Scheidt | Method and apparatus for photothermal analysis of a layer of material, especially for thickness measurement thereof |
| CN104062188A (en) * | 2014-06-26 | 2014-09-24 | 上海交通大学 | Method for measuring fracture toughness J<IC> of heat affected zone of welded joint |
| CN104833676A (en) * | 2015-04-27 | 2015-08-12 | 扬州大学 | Metallographic microscopic technology capable of precisely determining boundary of thermally influenced area after TRIP steel resistance spot-welding |
Non-Patent Citations (1)
| Title |
|---|
| 杨仁杰 等: "Inconel 617镍基合金焊接接头热影响区组织和性能分析", 《上海金属》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796818A (en) * | 2018-01-23 | 2018-03-13 | 湖南泰嘉新材料科技股份有限公司 | The method of on-line checking bi-metal bandsaw blades welding quality |
| CN108445055A (en) * | 2018-03-27 | 2018-08-24 | 哈尔滨工业大学 | A kind of method of quick measurement Al-Mg-Si system alloy welding point softened region |
| CN109211628A (en) * | 2018-09-05 | 2019-01-15 | 中国航发动力股份有限公司 | A kind of microscopic detection method for cast superalloy level of creep |
| CN112162078A (en) * | 2020-09-23 | 2021-01-01 | 西安热工研究院有限公司 | On-site detection method for repair welding area of outer surface of high-temperature and high-pressure pipe fitting |
| CN114486893A (en) * | 2022-01-20 | 2022-05-13 | 中电华创(苏州)电力技术研究有限公司 | Method for judging butt joint welding seam and heat affected zone of ground extra height |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106226307A (en) | A kind of method measuring 617 nickel-base alloy heat affected area length | |
| Smith et al. | Residual stress analysis in linear friction welded in-service Inconel 718 superalloy via neutron diffraction and contour method approaches | |
| Chamanfar et al. | Mechanical property and microstructure of linear friction welded WASPALOY | |
| Ding et al. | Improvement of machinability of Waspaloy via laser-assisted machining | |
| Ding et al. | Wear behavior and mechanism of single-layer brazed CBN abrasive wheels during creep-feed grinding cast nickel-based superalloy | |
| CN104532233B (en) | Rotor axle position laser melting coating restorative procedure | |
| Chamanfar et al. | Microstructure and mechanical properties of surface and subsurface layers in broached and shot-peened Inconel-718 gas turbine disc fir-trees | |
| CN106563929A (en) | Method for repairing and manufacturing turbine engine component, and turbine engine component | |
| CN107470989B (en) | A kind of mechanical grinding method of high-precision diamond Vickers indenter | |
| Palacios et al. | Influence of the notch root radius on the fracture toughness of brittle metals: Nanostructure tungsten alloy, a case study | |
| CN109459284B (en) | Preparation method of test sample for vanadium-based alloy metallographic structure inspection | |
| CN109187535A (en) | The Al-alloy products microscopic structure method of inspection | |
| Parga et al. | Room temperature mechanical properties of electron beam welded zircaloy-4 sheet | |
| Lu et al. | Research on mechanical properties and microstructure by selective laser melting of 316L stainless steel | |
| Smelov et al. | Development of process optimization technology for laser cladding of GTE compressor blades | |
| Wanjara et al. | Linear friction welding of dissimilar materials 316L stainless steel to Zircaloy-4 | |
| Yang et al. | Investigation of microstructure and mechanical properties of GH4169 superalloy joint produced by linear friction welding | |
| Easton et al. | Brazing development and interfacial metallurgy study of tungsten and copper joints with eutectic gold copper brazing alloy | |
| Saini et al. | Investigation on characterization and machinability of Al-4032/SiC metal matrix composite | |
| CN109079143A (en) | The method for removing precinct laser fusion formation of parts surface of internal cavity crackle | |
| Shinozaki et al. | Stress-strain analysis of creep deterioration in heat affected weld zone in high Cr ferritic heat resistant steel | |
| He et al. | Low-cycle fatigue behavior of a solution-treated and HIPped nickel-based single-crystal superalloy at 760° C | |
| Ling et al. | In-situ investigation on tensile deformation and fracture behaviors of inhomogeneous microstructure during laser repair of Ti-6Al-4 V titanium alloy | |
| Xiao et al. | Enhancing machinability of Ti6Al4V by ultrashort-pulse laser-induced modification assisted grinding | |
| Polishetty et al. | Advances in conventional machining processes for machinability enhancement of difficult-to-machine materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161214 |
|
| RJ01 | Rejection of invention patent application after publication |