CN107937850A - A kind of method by being heat-treated lifting nickel-base alloy forging structural homogenity - Google Patents
A kind of method by being heat-treated lifting nickel-base alloy forging structural homogenity Download PDFInfo
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- CN107937850A CN107937850A CN201711231943.5A CN201711231943A CN107937850A CN 107937850 A CN107937850 A CN 107937850A CN 201711231943 A CN201711231943 A CN 201711231943A CN 107937850 A CN107937850 A CN 107937850A
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- forging
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of method by being heat-treated lifting nickel-base alloy forging structural homogenity.The step of this method, is as follows：(1) the nickel-base alloy forging stock after fixation rates is subjected to forging deformation, the technological parameter of forging deformation is：950 DEG C~1010 DEG C of deformation temperature, strain rate 0.01s‑1~1s‑1, deflection 40%~60%, immediately quenches forging after forging deformation；(2) annealing heat-treats are carried out to forging, the technique of annealing heat-treats is：950 DEG C~980 DEG C of annealing temperature, soaking time 8~15 minutes；(3) after annealing heat-treats, forging is quenched immediately.Method proposed by the present invention can lift nickel-base alloy forging structural homogenity by being heat-treated, and effective way is provided for manufacture high-quality forging.
Description
Technical field：
The invention belongs to technical field of forging, is related to a kind of by being heat-treated lifting nickel-base alloy forging structural homogenity
Method.
Background technology：
Nickel-base alloy is one kind with γ " phases (Ni3Nb phase, γ ' phases (Ni be need to strengthen based on)3AlTi it is) auxiliary hardening constituent
Nickel base superalloy.Because it has good comprehensive performance in -253 DEG C~700 DEG C temperature ranges, particularly have at 650 DEG C
There are high intensity, high temperature resistant, anticorrosive, anti-oxidant and good creep resistant and anti-fatigue performance, it is high to be widely used in manufacture
The aerial motor spare part of quality.
Structural homogenity be nickel-base alloy forging part shaping important goal, and warm and hot forging deformation technique be obtain uniformly and
The important channel of the nickel-base alloy forging of small grains tissue.But during die-forging forming, due to friction, blank shape
Etc. the influence of factor, more serious deformation non-uniform phenomenon is inevitably present, causing large deformation region, there occurs completely dynamic
State recrystallizes, and incomplete dynamic recrystallization occurs for small deformation region, thus the forging tissue finally obtained is seriously uneven, deposits
In more serious mixed crystal, this has seriously affected the realization of forging structural homogenity target.Therefore, change can be lifted by being badly in need of invention one kind
The new method of nickel-base alloy forging structural homogenity after shape.
At present, in the method for published lifting nickel-base alloy forging structural homogenity, most of is all to pass through optimization
Alloy blank shape and increase forging deformation amount come achieve the purpose that lifted forging structural homogenity.This technique process compared with
More, complex, processing cost is high, and energy loss is big.Therefore, it is necessary to propose a kind of low cost, low power consuming, be easy to real
The method applied achievees the purpose that to lift nickel-base alloy forging structural homogenity.
The content of the invention：
It is an object of the invention to provide a kind of method by being heat-treated lifting nickel-base alloy forging structural homogenity.Should
Method effectively can lift nickel-base alloy forging structural homogenity by using suitable annealing heat treatment process, solve
The high cost of existing lifting nickel-base alloy forging structural homogenity method, highly energy-consuming, be not easy the problem implemented.
The scheme that the present invention solves above-mentioned problem is：
Step 1：Nickel-base alloy forging stock after fixation rates is subjected to forging deformation, the technological parameter of forging deformation
For：950 DEG C~1010 DEG C of deformation temperature, strain rate 0.01s-1~1s-1, deflection 40%~60%, after forging deformation
Forging is quenched immediately；
Step 2：Annealing heat-treats are carried out to forging, the technique of annealing heat-treats is：950 DEG C~980 DEG C of annealing temperature, is protected
Warm 8~15 minutes time；
Step 3：After annealing heat-treats, forging is quenched immediately.
Beneficial effects of the present invention are：This method take full advantage of quiet/meta-dynamic recrystallization die forging process is formed it is thick
The refining effect again of crystalline substance/mixed grain structure so that the deformed obtained forging mixed crystal group under small deformation, middle high strain rate
Knit becomes uniform again, so as to achieve the purpose that to lift nickel-base alloy forging structural homogenity.Its principle is：Become by forging
After shape, complete dynamic recrystallization occurs for large deformation region, and deformation energy almost exhausts, and crystal boundary driving force is relatively low, annealed
Simply a little grow up occurs for crystal grain in journey；And incomplete recrystallized, the deformation energy containing remnants in tissue occurs for small deformation region
And dislocation energy, quiet/meta-dynamic recrystallization occurs by way of bending crystal boundary in annealing process and forming core and annexation subgrain.
With the increase of annealing time, final small deformation regional organization will also recrystallize completely, and whole tissue is changed into uniform recrystallization group
Knit.It has been finally reached the purpose of lifting nickel-base alloy forging structural homogenity.
Brief description of the drawings：
Grain structure after Fig. 1 nickel-base alloy forging stock fixation rates；
The process flow chart of Fig. 2 embodiments 1；
The grain structure of nickel-base alloy forging after the deformation of Fig. 3 Examples 1 and 2.
The grain structure for the nickel-base alloy forging that Fig. 4 embodiments 1 are obtained using annealing heat treatment process；
The process flow chart of Fig. 5 embodiments 2
The grain structure for the nickel-base alloy forging that Fig. 6 embodiments 2 are obtained using annealing heat treatment process.
Embodiment：
The present invention is described in detail with specific implementation case below in conjunction with the accompanying drawings.
The present invention is a kind of method by being heat-treated lifting nickel-base alloy forging structural homogenity, is used in case study on implementation
Commercial nickel-base alloy blank component it is as shown in table 1, grain structure after its fixation rates is as shown in Figure 1, pass through transversal
Method can measure after solution treatment crystallite dimension as 75 μm, it is necessary to by forging deformation crystal grain thinning.
Material therefor nickel-base alloy component (wt.%) in 1 present example of table
Embodiment 1
Step 1：Nickel-base alloy forging stock after fixation rates is subjected to forging deformation, the technological parameter of forging deformation
For：980 DEG C of deformation temperature, strain rate 0.1s-1, deflection 50%, immediately quenches forging after forging deformation；
Step 2：Annealing heat-treats are carried out to forging, the technique of annealing heat-treats is：980 DEG C of annealing temperature, soaking time
10 minutes, the process flow diagram of embodiment 1 was as shown in Figure 2；
Step 3：After annealing heat-treats, forging is quenched immediately.
Metallographic observation is carried out to deformed nickel-base alloy forging, the results are shown in Figure 3.To Ni-based after annealing heat-treats
Alloy forged piece carries out metallographic observation, and the results are shown in Figure 4.To prove the feasibility of the method for the present invention, comparison diagram 3 and Fig. 4 are understood,
Embodiment 1 by carrying out an annealing heat-treats again to deformed nickel-base alloy forging so that Deformation structure again there occurs
Recrystallization, the thick deformed grains of script are gradually partially recrystallized crystal grain phagocytosis and substitute, finally eliminate in Fig. 3 since deformation is uneven
The coarse-grain of even generation so that mixed grain structure originally becomes the high recrystallized structure of the uniformity.This explanation the method for the present invention can be with
The structural homogenity of nickel-base alloy forging is lifted by using suitable heat treatment.Meanwhile this method is only to become in forging
One of annealing heat-treats process is added after shape, the structural homogenity of forging is lifted using the recrystallization in annealing process,
Reach the method for lifting forging structural homogenity by the way that alloy blank is repeatedly forged at high temperature compared to other, there is operation
Simplicity, efficient, cost is low, easy to implement and can greatly reduce the advantages such as the requirement to forging technology.
Embodiment 2
Step 1：Nickel-base alloy forging stock after fixation rates is subjected to forging deformation, the technological parameter of forging deformation
For：980 DEG C of deformation temperature, strain rate 0.1s-1, deflection 50%, immediately quenches forging after forging deformation；
Step 2：Annealing heat-treats are carried out to forging, the technique of annealing heat-treats is：950 DEG C of annealing temperature, soaking time
10 minutes, the process flow diagram of embodiment 2 was as shown in Figure 5；
Step 3：After annealing heat-treats, forging is quenched immediately.
Metallographic observation is carried out to deformed nickel-base alloy forging, the results are shown in Figure 3.To Ni-based after annealing heat-treats
Alloy forged piece carries out metallographic observation, and the results are shown in Figure 6.To prove the feasibility of the method for the present invention, comparison diagram 3 and Fig. 6 are understood,
Embodiment 2 to deformed nickel-base alloy forging by carrying out an annealing heat-treats so that there occurs again again for Deformation structure
Crystallization, the thick deformed grains of script are gradually partially recrystallized crystal grain phagocytosis and substitute, and finally eliminate uneven due to deforming in Fig. 3
The coarse-grain of generation so that mixed grain structure originally becomes the high recrystallized structure of the uniformity.This explanation the method for the present invention can lead to
Cross using suitable heat treatment to lift the structural homogenity of nickel-base alloy forging.Meanwhile this method is only to be deformed in forging
After add one of annealing heat-treats process, lift the structural homogenity of forging using being recrystallized in annealing process, compare
Other reach the method for lifting forging structural homogenity by the way that alloy blank is repeatedly forged at high temperature, have operation letter
Just, efficient, cost is low, easy to implement and can greatly reduce the advantages such as the requirement to forging technology.
The example of the present invention is described above in conjunction with attached drawing, but the present invention is not limited to above-mentioned specific embodiment party
Formula, above-mentioned embodiment are only exemplary, and are not limitations, any invention no more than the claims in the present invention
Create, within the protection of the present invention.
Claims (1)
- A kind of 1. method by being heat-treated lifting nickel-base alloy forging structural homogenity, it is characterised in that this method can pass through Nickel-base alloy forging structural homogenity is lifted using suitable annealing heat-treats, is included the following steps：Step 1：Nickel-base alloy forging stock after fixation rates is subjected to forging deformation, the technological parameter of forging deformation is：Become 950 DEG C~1010 DEG C of shape temperature, strain rate 0.01s-1~1s-1, deflection 40%~60%, after forging deformation immediately Forging is quenched；Step 2：Annealing heat-treats are carried out to forging, the technique of annealing heat-treats is：950 DEG C~980 DEG C of annealing temperature, during insulation Between 8~15 minutes；Step 3：After annealing heat-treats, forging is quenched immediately.
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| CN201711231943.5A CN107937850B (en) | 2017-11-30 | 2017-11-30 | A method of nickel-base alloy forging structural homogenity is promoted by heat treatment |
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| CN201711231943.5A CN107937850B (en) | 2017-11-30 | 2017-11-30 | A method of nickel-base alloy forging structural homogenity is promoted by heat treatment |
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| CN107937850B CN107937850B (en) | 2019-06-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252120A (en) * | 2018-09-26 | 2019-01-22 | 中南大学 | A kind of method of uniform refinement GH4169 alloy forged piece tissue |
| CN109457201A (en) * | 2018-11-14 | 2019-03-12 | 中南大学 | A method of refinement nickel-base alloy forging crystal grain simultaneously improves structural homogenity |
| CN115323298A (en) * | 2022-08-11 | 2022-11-11 | 江苏大学 | Physical simulation method for nickel-based superalloy forging process |
| GB2624983A (en) * | 2022-08-11 | 2024-06-05 | Univ Jiangsu | Physical simulation method for forging process of nickel-based superalloy |
Citations (5)
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| DD233145B1 (en) * | 1984-07-17 | 1988-11-16 | Mansfeld Kombinat W Pieck Veb | PROCESS FOR PREPARING COLD BOND FROM NICR21, 5CU4A12,5 |
| US20050155679A1 (en) * | 2003-04-09 | 2005-07-21 | Coastcast Corporation | CoCr alloys and methods for making same |
| CN104988442A (en) * | 2015-07-10 | 2015-10-21 | 中南大学 | Thinning method of GH4169 alloy forging crystalline grain structure |
| CN106048484A (en) * | 2016-07-06 | 2016-10-26 | 中南大学 | Method for refining grain structure of GH4169 alloy forging by adopting two-stage stepped strain rate process |
| CN107287540A (en) * | 2017-07-05 | 2017-10-24 | 中南大学 | A kind of method by regulating and controlling deformation temperature refinement nickel-base alloy forging grain structure |
-
2017
- 2017-11-30 CN CN201711231943.5A patent/CN107937850B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD233145B1 (en) * | 1984-07-17 | 1988-11-16 | Mansfeld Kombinat W Pieck Veb | PROCESS FOR PREPARING COLD BOND FROM NICR21, 5CU4A12,5 |
| US20050155679A1 (en) * | 2003-04-09 | 2005-07-21 | Coastcast Corporation | CoCr alloys and methods for making same |
| CN104988442A (en) * | 2015-07-10 | 2015-10-21 | 中南大学 | Thinning method of GH4169 alloy forging crystalline grain structure |
| CN106048484A (en) * | 2016-07-06 | 2016-10-26 | 中南大学 | Method for refining grain structure of GH4169 alloy forging by adopting two-stage stepped strain rate process |
| CN107287540A (en) * | 2017-07-05 | 2017-10-24 | 中南大学 | A kind of method by regulating and controlling deformation temperature refinement nickel-base alloy forging grain structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252120A (en) * | 2018-09-26 | 2019-01-22 | 中南大学 | A kind of method of uniform refinement GH4169 alloy forged piece tissue |
| CN109457201A (en) * | 2018-11-14 | 2019-03-12 | 中南大学 | A method of refinement nickel-base alloy forging crystal grain simultaneously improves structural homogenity |
| CN115323298A (en) * | 2022-08-11 | 2022-11-11 | 江苏大学 | Physical simulation method for nickel-based superalloy forging process |
| WO2024032103A1 (en) * | 2022-08-11 | 2024-02-15 | 江苏大学 | Physical simulation method for forging process of nickel-based superalloy |
| GB2624983A (en) * | 2022-08-11 | 2024-06-05 | Univ Jiangsu | Physical simulation method for forging process of nickel-based superalloy |
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