EP2510131A1 - Procede de fabrication de superalliages de nickel de type inconel 718 - Google Patents
Procede de fabrication de superalliages de nickel de type inconel 718Info
- Publication number
- EP2510131A1 EP2510131A1 EP10801646A EP10801646A EP2510131A1 EP 2510131 A1 EP2510131 A1 EP 2510131A1 EP 10801646 A EP10801646 A EP 10801646A EP 10801646 A EP10801646 A EP 10801646A EP 2510131 A1 EP2510131 A1 EP 2510131A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- superalloy
- manufacturing
- nickel
- grains
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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%
Definitions
- the present invention relates to a method for manufacturing nickel superalloys Inconel type 718.
- the Inconel 718 Nickel base superalloy (NC19FeNb) is widely used for the manufacture of parts in advanced applications, particularly in aeronautics for rotating parts of turbomachines, housings, rings.
- the mechanical characteristics of use of these parts depend on the intrinsic characteristics of the alloy (chemical composition) of this part but also on the microstructure of the part, in particular the grain size.
- the grain size governs in particular the characteristics of oligocyclic fatigue, tensile strength, and creep.
- a microstructure whose grains are fine makes it possible to obtain the best properties of fatigue and traction, while guaranteeing good creep resistance.
- This fine grain size is currently obtained by means of heat treatment and forgings ranges that produce grain recrystallization mechanisms.
- the aim of the invention is to propose a manufacturing process that makes it possible to limit the appearance of coarse grains during the production of the part.
- M and 6> is the distance between points M and M 'after forging, is at least equal to a minimum value D m , and in that said nickel superalloy does not undergo heat treatment at a temperature above a threshold temperature T s equal to 750 ° C after said quenching.
- the coarse grains still present in the superalloy are converted back into fine grains, and no new coarse grains are formed within the superalloy.
- the nickel superalloy is also subjected to an income directly after quenching following the last forging step.
- FIG. 1 schematically shows the manufacturing method according to the invention
- FIG. 2 shows schematically an example of the manufacturing method according to the invention.
- Inconel 718 nickel superalloys are considered in the present invention.
- thermomechanical treatments intended to give this billet a structure and a shape in accordance with the specifications.
- the coarse equiaxial grains which result from a static magnification of the fine grains, for example because the alloy is maintained at a temperature higher than the temperature ⁇ -solvus.
- magnification can be avoided by performing the forging operations of the alloy processing range at temperatures below the ⁇ -solvus temperature.
- the inventors have also found the presence within the alloy of coarse grains "exploded", whose contours are very irregular. It is supposed that these grains are generally formed at temperatures below the temperature of 6-solvus, and that it is the energy stored following hardening during the forging operation above, when the deformation is carried out at temperatures below the temperature of ⁇ -solvus (for example below 1000 ° C.), which causes this bursting of the grains. This stored energy is then "released” in the form of an early and uncontrolled migration of grain boundaries, which generates these "burst" grains.
- the last forging step (referenced 1 in FIG. 1) is carried out at a temperature T lower than the temperature ⁇ -solvus, and in addition that at any point M of this nickel superalloy the local deformation rate D is at least equal to a minimum value D m .
- the rate of local deformation D characterizes the local deformation at a point M of a material. It is defined by the relation
- ⁇ ⁇ is the initial distance between this point M and a point M 'close to M
- ô f is the distance between the points M and M' after forging.
- the condition that the local deformation rate D is at least equal to a minimum value D m in a region of the superalloy makes it possible to recrystallize the "exploded" grains into fine grains in this region.
- certain regions of this part may undergo larger deformations than other regions.
- the fact that the above condition on the local strain rate D is valid at any point M of the superalloy makes it possible to ensure that the "bursted" grains are recrystallized in fine grains throughout the volume of the superalloy.
- the minimum value D m is equal to 0.7.
- the minimum value D m is equal to 0.8 or 0.9.
- the superalloy is quenched from the forging temperature T to room temperature T A.
- the quenching is carried out at a speed of the order of 15 ° C./min, the tests carried out by the inventors having demonstrated that the mechanical characteristics were best optimized at this quenching speed.
- water quenching is carried out.
- the superalloy does not undergo heat treatment at a temperature above a threshold temperature T s equal to 750 ° C.
- the superalloy is not dissolved because it takes place at a temperature above the threshold temperature T s .
- the superalloy can undergo a direct income (step referenced 2 in FIG. 1) after the quenching following the last forging.
- the superalloy is heated to a temperature of 720 ° C for 8 hours, then cooled to a temperature of 620 ° C for 8 hours, before being cooled to room temperature. This situation is shown in Figure 2.
- the superalloy Before the last forging step according to the invention, the superalloy may have undergone no other, another, or several other forging steps, with for each, several, one or none of these steps a forging temperature greater than the temperature ⁇ -solvus.
- all the forging steps preceding the last forging step are performed at temperatures below the ⁇ -solvus temperature.
- the size of all the grains of the superalloy is between 5 and 30 ⁇ ,
- the size of all the grains of the superalloy is between 5 and 20 ⁇ . This finer average grain size results in a superalloy whose fatigue life and elastic limit are further improved.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Forging (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0958815A FR2953860B1 (fr) | 2009-12-10 | 2009-12-10 | Procede de fabrication de superaillages de nickel de type inconel 718 |
| PCT/FR2010/052658 WO2011070302A1 (fr) | 2009-12-10 | 2010-12-09 | Procede de fabrication de superalliages de nickel de type inconel 718 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2510131A1 true EP2510131A1 (fr) | 2012-10-17 |
| EP2510131B1 EP2510131B1 (fr) | 2021-03-24 |
Family
ID=42313893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10801646.0A Active EP2510131B1 (fr) | 2009-12-10 | 2010-12-09 | Procede de fabrication de superalliages de nickel de type inconel 718 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20120247626A1 (fr) |
| EP (1) | EP2510131B1 (fr) |
| JP (1) | JP5951499B2 (fr) |
| CN (1) | CN102652179B (fr) |
| BR (1) | BR112012013752A2 (fr) |
| CA (1) | CA2782460A1 (fr) |
| FR (1) | FR2953860B1 (fr) |
| RU (1) | RU2567968C2 (fr) |
| WO (1) | WO2011070302A1 (fr) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9310081B2 (en) | 2012-05-14 | 2016-04-12 | Delavan Inc. | Methods of fabricating fuel injectors using laser additive deposition |
| WO2016013433A1 (fr) | 2014-07-23 | 2016-01-28 | 株式会社Ihi | PROCÉDÉ DE PRODUCTION D'UN COMPOSANT D'ALLIAGE DE Ni |
| CN104625607B (zh) * | 2014-12-09 | 2017-07-14 | 抚顺特殊钢股份有限公司 | 闪光焊环用inco718型材制造方法 |
| US10077714B2 (en) | 2015-11-06 | 2018-09-18 | Rolls-Royce Plc | Repairable fuel injector |
| CN111118423B (zh) * | 2019-11-27 | 2020-12-15 | 北京钢研高纳科技股份有限公司 | 一种gh4282镍基高温合金棒材及其制备方法 |
| CN115323298B (zh) * | 2022-08-11 | 2023-03-03 | 江苏大学 | 一种镍基高温合金锻造过程的物理模拟方法 |
| CN116690109B (zh) * | 2023-04-28 | 2025-12-23 | 江苏隆达超合金航材有限公司 | 一种镍基高温合金饼材细晶锻造方法 |
| FR3151661B1 (fr) | 2023-07-28 | 2025-08-15 | Safran Aircraft Engines | Procede de detection d’anomalies de type freckle d’un echantillon en superalliage a base de nickel |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3660177A (en) * | 1970-05-18 | 1972-05-02 | United Aircraft Corp | Processing of nickel-base alloys for improved fatigue properties |
| JP3369627B2 (ja) * | 1993-04-08 | 2003-01-20 | 日立金属株式会社 | 微細結晶粒超耐熱合金部材の製造方法 |
| JPH08311626A (ja) * | 1995-05-17 | 1996-11-26 | Japan Steel Works Ltd:The | 超合金材の製造方法 |
| FR2745588B1 (fr) * | 1996-02-29 | 1998-04-30 | Snecma | Procede de traitement thermique d'un superalliage a base de nickel |
| JP3909406B2 (ja) * | 2002-02-06 | 2007-04-25 | 大同特殊鋼株式会社 | Ni基合金材の製造方法 |
| US6730264B2 (en) * | 2002-05-13 | 2004-05-04 | Ati Properties, Inc. | Nickel-base alloy |
| US7531054B2 (en) * | 2005-08-24 | 2009-05-12 | Ati Properties, Inc. | Nickel alloy and method including direct aging |
| FR2937654A1 (fr) * | 2008-10-28 | 2010-04-30 | Snecma | Procede de traitement de pieces metalliques pour en ameliorer la tenue en fatigue |
-
2009
- 2009-12-10 FR FR0958815A patent/FR2953860B1/fr active Active
-
2010
- 2010-12-09 RU RU2012128876/02A patent/RU2567968C2/ru active
- 2010-12-09 CN CN201080056172.0A patent/CN102652179B/zh active Active
- 2010-12-09 EP EP10801646.0A patent/EP2510131B1/fr active Active
- 2010-12-09 US US13/514,891 patent/US20120247626A1/en not_active Abandoned
- 2010-12-09 BR BR112012013752A patent/BR112012013752A2/pt not_active Application Discontinuation
- 2010-12-09 WO PCT/FR2010/052658 patent/WO2011070302A1/fr not_active Ceased
- 2010-12-09 CA CA2782460A patent/CA2782460A1/fr active Pending
- 2010-12-09 JP JP2012542604A patent/JP5951499B2/ja active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011070302A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20120247626A1 (en) | 2012-10-04 |
| CN102652179A (zh) | 2012-08-29 |
| RU2567968C2 (ru) | 2015-11-10 |
| FR2953860A1 (fr) | 2011-06-17 |
| CA2782460A1 (fr) | 2011-06-16 |
| RU2012128876A (ru) | 2014-01-20 |
| CN102652179B (zh) | 2015-11-25 |
| WO2011070302A1 (fr) | 2011-06-16 |
| EP2510131B1 (fr) | 2021-03-24 |
| FR2953860B1 (fr) | 2015-05-15 |
| JP5951499B2 (ja) | 2016-07-13 |
| BR112012013752A2 (pt) | 2016-03-15 |
| JP2013513728A (ja) | 2013-04-22 |
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