EP2761044B1 - Alliage a base de nickel - Google Patents
Alliage a base de nickel Download PDFInfo
- Publication number
- EP2761044B1 EP2761044B1 EP12775775.5A EP12775775A EP2761044B1 EP 2761044 B1 EP2761044 B1 EP 2761044B1 EP 12775775 A EP12775775 A EP 12775775A EP 2761044 B1 EP2761044 B1 EP 2761044B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- nickel alloy
- nickel
- alloy
- alloy according
- 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.)
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- 229910000990 Ni alloy Inorganic materials 0.000 title claims 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 20
- 229910052759 nickel Inorganic materials 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052735 hafnium Inorganic materials 0.000 claims description 7
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 6
- 229910052796 boron Inorganic materials 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 2
- 239000005864 Sulphur Substances 0.000 claims 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 description 17
- 239000000956 alloy Substances 0.000 description 17
- 238000007711 solidification Methods 0.000 description 6
- 230000008023 solidification Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
Definitions
- the subject of the invention is a nickel-based alloy.
- the alloy of claim 1 provided herein comprises, in a nickel base, from 9.5% to 9.90% by weight of cobalt, from 8.70% to 9.00% by weight of chromium, from 6.65% to 7.05% by weight of tungsten, from 3.67% to 3.87% by weight of tantalum, from 1.77% to 1.97% by weight of Molybdenum, from 0, 10% to 0.12% by weight of carbon; and it differs from the conventional composition of Rene 125 by grades ranging from 4.80% to 5.00% by weight of aluminum, from 1.48% to 1.52% by weight of hafnium, 2.28% to 2.33% by weight of titanium, from 0.0005% to 0.01% by weight of boron.
- the alloy does not in principle include other ingredients, except at much lower levels than those mentioned so far, or only in the state of impurities. It is thus emphasized in particular that the zirconium, which is quite abundant in René 125, is completely or almost completely removed from the present alloy (at most 0.007% by weight), as is phosphorus and sulfur (at most 0.001% by weight each). . Certain other criteria, corresponding to secondary aspects of the invention, can still be advantageously respected as will be detailed below.
- This alloy is much more resistant to hot crack formation than René 125; it can therefore be used in foundry manufacturing processes of complex shapes.
- Phosphorus and sulfur deserve the same comments, but their importance is less since their content is already reduced in René 125.
- Titanium and hafnium their effect was the same but less important, so that their total suppression is not recommended, a slight drop in the content sufficient to greatly reduce the probability of cracks.
- the contents proposed in the invention lead to probabilities of at least four times lower than in René 125 (the comparative tests each time focused on a single variant element).
- Total content of hafnium, titanium and aluminum the scrap rate was at a low level between approximately 8.73% and 8.77% (cumulative levels), then increased abruptly by being at least four times higher.
- Aluminum does not per se have the detrimental role of the other elements mentioned above and its content is even increased in the invention, but this criterion shows that it can not be excessively.
- the total content is advantageously less than the last digit.
- Nickel The percentage of scrap part waste decreased from a nickel content of 59.71% to a level corresponding to very low scrap rates from approximately 59.83%. The content is advantageously greater than the latter figure.
- Silicon it is at most 0.10% by weight in René 125, and advantageously present in the form of traces in the invention.
- the heat treatment used for the tests as well as for the molding of the blowers was a T3R, ie heating at 1175 ° C for 30 minutes, then cooling to 1095 ° C in 6 to 10 minutes, then cooling baked at 650 ° Celsius, then air-cooled, and annealed at 815 ° C for 16 hours under vacuum or protective atmosphere.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Mold Materials And Core Materials (AREA)
- Ceramic Products (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Continuous Casting (AREA)
Description
- Le sujet de l'invention est un alliage à base de nickel.
- Il a été conçu pour améliorer la fabrication en fonderie de certaines pièces de forme complexe comme des aubages distributeurs utilisés dans les stators de moteurs en aéronautique. Ces pièces sont constituées de pales encastrées dans des plate-formes, dont l'assemblage sur moteur constitue un anneau. Certaines de ces pièces sont traditionnellement construites en un alliage à base de nickel appelé René 125, mais qui est particulièrement susceptible de produire des criques au moulage, lors de la solidification du métal liquide, ce qui peut constituer une cause de rebut importante. Le document « High-Temperature High-Strength Nickel Base Alloys », vol. 393, 1995, pags 1-22, XP 009161317, mentionne la composition de l'alliage René 125 et d'autres.
- On a donc recherché un alliage de composition analogue à celle du René 125 afin de conserver pour l'essentiel les propriétés favorables de cet alliage, mais qui serait beaucoup moins propice à la formation de criques.
- Selon l'invention, l'alliage de la revendication 1 proposé ici comprend, dans une base de nickel, de 9,5% à 9,90 % en poids de Cobalt, de 8,70% à 9,00% en poids de chrome, de 6,65% à 7,05% en poids de tungstène, de 3,67% à 3,87% en poids de tantale, de 1,77 % à 1,97% en poids de Molybdène, de 0,10% à 0,12% en poids de carbone ; et il se distingue de la composition classique du René 125 par des teneurs de 4,80 % à 5,00% en poids d'aluminium, de 1,48% à 1,52% en poids de hafnium, de 2,28% à 2,33% en poids de titane, de 0,0005% à 0,01% en poids de bore. L'alliage ne comprend en principe pas d'autres ingrédients, sauf à des teneurs beaucoup plus faibles que celles qu'on a mentionnées jusqu'ici, ou seulement à l'état d'impuretés. On souligne ainsi en particulier que le zirconium, assez abondant dans le René 125, est supprimé entièrement ou presque du présent alliage (au plus 0,007% en poids), de même que le phosphore et le soufre (au plus 0,001% en poids chacun). Certains autres critères, correspondant à des aspects secondaires de l'invention, peuvent encore avantageusement être respectés comme on le détaillera plus loin.
- Cet alliage résiste beaucoup mieux à la formation à chaud de criques que le René 125 ; il peut donc être employé dans des procédés de fabrication en fonderie de pièces de formes complexes.
-
- Voici maintenant quelques indications sur les effets obtenus. Il est apparu au cours d'essais que le bore, le zirconium, le silicium, le soufre, le phosphore, le hafnium et le titane étaient favorables à l'apparition des criques à chaud, et c'est pourquoi les teneurs en ces éléments sont réduites par rapport à la composition de l'alliage de départ René 125. D'un point de vue quantitatif, le titane et le hafnium ont vu leur teneur le plus réduite, et le zirconium, le phosphore et le soufre deviennent des éléments présents seulement à l'état de trace, alors que le zirconium était forcément présent et à une teneur non négligeable dans l'alliage de départ. La teneur de certains autres éléments, qu'on n'incrimine pas comme favorisant l'apparition des criques, a aussi été réduite significativement afin d'accroître la teneur en la base de nickel, puisqu'il a été constaté que les criques étaient moins nombreuses avec une teneur en nickel élevée.
- On peut ainsi expliquer l'effet favorable de la réduction ou de la quasi-suppression de ces éléments : les particules qu'ils forment s'accumulent aux joints de grains de l'alliage au cours de la solidification. Les contraintes internes qui se développent à la solidification tendent à produire des fissurations aux joints de grains, et d'autant plus facilement que ces derniers sont encore liquides. La réduction de teneur de ces éléments favorise la solidification des joints de grains à des températures plus proche de celle des grains et accroît donc la cohésion de l'alliage.
- Voici maintenant des indications plus détaillées sur les différents éléments.
- Bore et zirconium : il est apparu que ces éléments étaient ceux qui contrariaient le plus la solidification aux joints de grains, et étaient donc responsables d'une solidification à une température bien inférieure à celle des grains eux-mêmes dans le René 125. Leur teneur est donc fortement réduite voire supprimée dans l'alliage de l'invention.
- En ce qui concerne le bore, des probabilités de criques beaucoup plus faibles (quatre fois plus faible ou encore moins) que dans le René 125 ont toutefois été observées aux teneurs proposées dans l'invention, si bien que la suppression totale de cet élément n'est pas préconisée.
- Le phosphore et le soufre méritent les mêmes commentaires, mais leur importance est moindre puisque leur teneur est déjà réduite dans le René 125.
- Titane et hafnium : leur effet était le même mais moins important, de sorte que leur suppression totale n'est pas préconisée, une légère baisse de la teneur suffisant à diminuer énormément les probabilités de criques. De même que pour le bore, les teneurs proposées dans l'invention entraînent des probabilités de criques au moins quatre fois inférieures que dans le René 125 (les essais comparatifs portaient à chaque fois sur un seul élément variant).
- Teneur totale en hafnium, titane et aluminium : le taux de rebut avait un palier bas entre 8,73% et 8,77% environ (cumul des teneurs), puis augmentait brusquement ensuite en étant multiplié par quatre au moins environ. L'aluminium n'a pas en soi le rôle néfaste des autres éléments mentionnés ci-dessus et sa teneur est même accrue dans l'invention, mais ce critère montre qu'elle ne peut l'être à l'excès. La teneur totale est avantageusement inférieure au dernier chiffre.
- Nickel : le pourcentage de rebut des pièces pour cause de criques diminuait à partir d'une teneur de 59,71% en nickel, et atteignait un palier correspondant à des taux de rebut très bas à partir de 59,83% environ. La teneur est avantageusement supérieure à ce dernier chiffre.
- Silicium : il est à au plus 0,10% en poids dans le René 125, et avantageusement présent à l'état de traces dans l'invention.
- Le traitement thermique utilisé pour les essais comme pour la fabrication par moulage des distributeurs aubagés était un T3R, à savoir un chauffage à 1175° Celsius pendant 30 minutes, puis un refroidissement jusqu'à 1095° Celsius en 6 à 10 minutes, puis un refroidissement au four jusqu'à 650° Celsius, puis un refroidissement à l'air, et un recuit à 815° Celsius pendant 16 heures sous vide ou atmosphère protectrice.
Claims (6)
- Alliage à base de nickel, comprenant de 9,50% à 9,90% en poids de cobalt, de 8,70% à 9,00% en poids de chrome, de 6,65% à 7,05% en poids de tungstène, de 3,67% à 3,87% en poids de tantale, de 0,10% à 0,12% en poids de carbone, de 1,77% à 1,97% en poids de molybdène, caractérisé en ce qu'il comprend de 4,80% à 5,00% en poids d'aluminium, de 1,48% à 1,52% en poids de hafnium, de 2,28% à 2,33% en poids de titane, de 0,005% à 0,01% en poids de bore, et moins de 0,007% en poids de zirconium, le reste étant de nickel et éventuellement d'autres éléments à l'état d'impuretés.
- Alliage à base de nickel suivant la revendication 1, caractérisé en ce qu'il comprend encore moins de 0,001% en poids de phosphore et moins de 0,001% en poids de soufre.
- Alliage à base de nickel suivant l'une quelconque des revendications 1 ou 2 caractérisé en ce qu'il comprend plus de 59,83% en poids de nickel.
- Alliage à base de nickel suivant l'une quelconque des revendications 1 à 3 caractérisé en ce qu'il comprend moins de 8,77% en poids total de titane, hafnium et aluminium.
- Alliage à base de nickel suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'il est utilisé pour fabriquer en fonderie une pièce de distributeur aubagé d'un stator de moteur d'aéronautique.
- Alliage à base de nickel la revendication 5, caractérisé en ce qu'il est utilisé avec un traitement thermique T3R.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1158705A FR2980485B1 (fr) | 2011-09-28 | 2011-09-28 | Alliage a base de nickel |
PCT/FR2012/052187 WO2013045847A2 (fr) | 2011-09-28 | 2012-09-27 | Alliage a base de nickel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2761044A2 EP2761044A2 (fr) | 2014-08-06 |
EP2761044B1 true EP2761044B1 (fr) | 2015-08-19 |
Family
ID=47071360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12775775.5A Active EP2761044B1 (fr) | 2011-09-28 | 2012-09-27 | Alliage a base de nickel |
Country Status (9)
Country | Link |
---|---|
US (1) | US20140241936A1 (fr) |
EP (1) | EP2761044B1 (fr) |
JP (1) | JP2014530299A (fr) |
CN (1) | CN103827331B (fr) |
BR (1) | BR112014007419A2 (fr) |
CA (1) | CA2850238A1 (fr) |
FR (1) | FR2980485B1 (fr) |
RU (1) | RU2014116986A (fr) |
WO (1) | WO2013045847A2 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200102628A1 (en) | 2017-03-31 | 2020-04-02 | Siemens Aktiengesellschaft | High-temperature nickel-based alloys |
CN113265564B (zh) * | 2021-05-06 | 2022-04-29 | 中国联合重型燃气轮机技术有限公司 | 一种长时稳定性好的高温合金及其制备方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA935674A (en) * | 1968-04-29 | 1973-10-23 | H. Lund Carl | Cast alloys |
IL65897A0 (en) * | 1981-10-02 | 1982-08-31 | Gen Electric | Single crystal nickel-base superalloy,article and method for making |
US5399313A (en) * | 1981-10-02 | 1995-03-21 | General Electric Company | Nickel-based superalloys for producing single crystal articles having improved tolerance to low angle grain boundaries |
FR2593830B1 (fr) * | 1986-02-06 | 1988-04-08 | Snecma | Superalliage a matrice a base de nickel notamment elabore en metallurgie des poudres et disque de turbomachine constitue en cet alliage |
JP3402603B2 (ja) * | 1986-03-27 | 2003-05-06 | ゼネラル・エレクトリック・カンパニイ | 単結晶製品を製造するための改善された低角粒界耐性を有するニッケル基―超合金 |
JP2819906B2 (ja) * | 1991-12-27 | 1998-11-05 | 住友金属工業株式会社 | 室温および高温強度に優れた工具用Ni基合金 |
US5443789A (en) * | 1992-09-14 | 1995-08-22 | Cannon-Muskegon Corporation | Low yttrium, high temperature alloy |
JP3164972B2 (ja) * | 1993-08-06 | 2001-05-14 | 株式会社日立製作所 | ガスタービン用動翼及びその製造法とそれを用いたガスタービン |
FR2768750B1 (fr) * | 1997-09-25 | 1999-11-05 | Snecma | Procede pour ameliorer la resistance a l'oxydation et a la corrosion d'une piece en superalliage et piece en superalliage obtenue par ce procede |
JP5073905B2 (ja) * | 2000-02-29 | 2012-11-14 | ゼネラル・エレクトリック・カンパニイ | ニッケル基超合金及び該超合金から製造したタービン部品 |
US6558119B2 (en) * | 2001-05-29 | 2003-05-06 | General Electric Company | Turbine airfoil with separately formed tip and method for manufacture and repair thereof |
US7341427B2 (en) * | 2005-12-20 | 2008-03-11 | General Electric Company | Gas turbine nozzle segment and process therefor |
US8267662B2 (en) * | 2007-12-13 | 2012-09-18 | General Electric Company | Monolithic and bi-metallic turbine blade dampers and method of manufacture |
US20110076182A1 (en) * | 2009-09-30 | 2011-03-31 | General Electric Company | Nickel-Based Superalloys and Articles |
CH702642A1 (de) * | 2010-02-05 | 2011-08-15 | Alstom Technology Ltd | Nickel-Basis-Superlegierung mit verbessertem Degradationsverhalten. |
-
2011
- 2011-09-28 FR FR1158705A patent/FR2980485B1/fr not_active Expired - Fee Related
-
2012
- 2012-09-27 JP JP2014532452A patent/JP2014530299A/ja active Pending
- 2012-09-27 US US14/347,440 patent/US20140241936A1/en not_active Abandoned
- 2012-09-27 BR BR112014007419A patent/BR112014007419A2/pt not_active IP Right Cessation
- 2012-09-27 EP EP12775775.5A patent/EP2761044B1/fr active Active
- 2012-09-27 CA CA2850238A patent/CA2850238A1/fr not_active Abandoned
- 2012-09-27 CN CN201280047098.5A patent/CN103827331B/zh not_active Expired - Fee Related
- 2012-09-27 WO PCT/FR2012/052187 patent/WO2013045847A2/fr active Application Filing
- 2012-09-27 RU RU2014116986/02A patent/RU2014116986A/ru not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
JP2014530299A (ja) | 2014-11-17 |
CA2850238A1 (fr) | 2013-04-04 |
WO2013045847A2 (fr) | 2013-04-04 |
RU2014116986A (ru) | 2015-11-10 |
FR2980485A1 (fr) | 2013-03-29 |
CN103827331A (zh) | 2014-05-28 |
US20140241936A1 (en) | 2014-08-28 |
FR2980485B1 (fr) | 2014-07-04 |
BR112014007419A2 (pt) | 2017-04-04 |
WO2013045847A3 (fr) | 2013-10-24 |
CN103827331B (zh) | 2016-05-11 |
EP2761044A2 (fr) | 2014-08-06 |
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