EP0774530B1 - Verfahren zur Herstellung eines hochtemperaturbeständigen Werkstoffkörpers aus einer Eisen-Nickel-Superlegierung - Google Patents

Verfahren zur Herstellung eines hochtemperaturbeständigen Werkstoffkörpers aus einer Eisen-Nickel-Superlegierung Download PDF

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Publication number
EP0774530B1
EP0774530B1 EP96810753A EP96810753A EP0774530B1 EP 0774530 B1 EP0774530 B1 EP 0774530B1 EP 96810753 A EP96810753 A EP 96810753A EP 96810753 A EP96810753 A EP 96810753A EP 0774530 B1 EP0774530 B1 EP 0774530B1
Authority
EP
European Patent Office
Prior art keywords
stage
precipitation hardening
process according
temperature
solution
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.)
Expired - Lifetime
Application number
EP96810753A
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German (de)
English (en)
French (fr)
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EP0774530A1 (de
Inventor
Mohamed Dr. Nazmy
Markus Staubli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Switzerland GmbH
Original Assignee
Alstom Power Schweiz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alstom Power Schweiz AG filed Critical Alstom Power Schweiz AG
Publication of EP0774530A1 publication Critical patent/EP0774530A1/de
Application granted granted Critical
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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
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel

Definitions

  • the invention is based on a method for Production of a high temperature resistant material body by solution annealing and subsequent precipitation hardening a heat-strengthened starting body provided in an oven Made of an IN 706 iron-nickel superalloy.
  • a material body is characterized at temperatures 700 ° C is characterized by high strength and is therefore used in thermal Machines, such as gas turbines in particular, are advantageous used.
  • the invention relates to a prior art, as described by J.H. Moll et al. "Heat Treatment of 706 Alloy for Optimum 1200 ° F Stress-Rupture Properties "Met. Trans. 1971, vol.2, pp.2153-2160.
  • the invention as defined in claim 1 the task is based on a process of the beginning Specify the type mentioned, with a simple way Material body made of the alloy of type IN 706 can be, which despite a high heat resistance a has great ductility.
  • the method according to the invention is particularly noteworthy in that it's easy to do and education eliminates embrittling excretions.
  • One after the Material body produced according to the method of the invention exhibits tensile strengths of approx. 700 ° C at approx. 600 [MPa] and elongation at break values of approx. 30% is therefore an excellent starting material for the Manufacturing a thermally and mechanically highly stressed Rotors of a large gas turbine.
  • the starting bodies each had the same structure and the same chemical composition.
  • the following elements were determined in weight percent as constituents: 0.01 carbon 0.04 Silicon 0.12 manganese ⁇ 0.001 sulfur 0.005 phosphorus 16.03 chrome 41.90 nickel 0.19 aluminum 0.01 cobalt 1.67 titanium ⁇ 0.01 copper 2.95 niobium rest iron
  • composition of the starting bodies can fluctuate within the limit ranges specified below: Max. 0.02 carbon Max. 0.10 Silicon Max. 0.20 manganese Max. 0.002 sulfur Max. 0.015 phosphorus 15 to 18 chrome 40 to 43 nickel 0.1 to 0.3 aluminum Max. 0.30 cobalt 1.5 to 1.8 titanium Max. 0.30 copper 2.8 to 3.2 niobium rest iron
  • the above properties are achieved with the alloy IN 706 reached when the solution-annealed starting body with a cooling rate of between 0.5 and 20 ° C / min of the annealing temperature provided for solution annealing to the the precipitation hardening provided temperature is performed. If the cooling rate is selected to be higher than 20 ° C / min the elongation at break and thus the ductility is strong reduced. However, if the cooling rate is less than 0.5 ° C / min chosen, the process is not economical more feasible. A number between 1 and 5 is preferred ° C / min cooling rate.
  • the solution annealing should depend on the size of the starting body for a maximum of 15 hours at temperatures between 900 and 1000 ° C.
  • Precipitation hardening should preferably take place in several stages Period of at least 10h and at most 70h executed become.
  • the solution-annealed should be used for precipitation hardening
  • Initial bodies in a first stage at temperatures between 700 and 760 ° C and in a second stage Temperatures between 600 and 650 ° C can be heated and in the first stage over a period of at least 10h and at most 50h and in the second stage over a period of time of at least 5h and at most 20h at these temperatures being held.
  • the first stage of precipitation hardening can be another Heat treatment stage upstream, in which the solution annealed starting body at a temperature between 800 ° C and 850 ° C is maintained (material body B ').

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)
  • Heat Treatment Of Articles (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP96810753A 1995-11-17 1996-11-07 Verfahren zur Herstellung eines hochtemperaturbeständigen Werkstoffkörpers aus einer Eisen-Nickel-Superlegierung Expired - Lifetime EP0774530B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19542919A DE19542919A1 (de) 1995-11-17 1995-11-17 Verfahren zur Herstellung eines hochtemperaturbeständigen Werkstoffkörpers aus einer Eisen-Nickel-Superlegierung vom Typ IN 706
DE19542919 1995-11-17

Publications (2)

Publication Number Publication Date
EP0774530A1 EP0774530A1 (de) 1997-05-21
EP0774530B1 true EP0774530B1 (de) 2001-02-21

Family

ID=7777736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810753A Expired - Lifetime EP0774530B1 (de) 1995-11-17 1996-11-07 Verfahren zur Herstellung eines hochtemperaturbeständigen Werkstoffkörpers aus einer Eisen-Nickel-Superlegierung

Country Status (8)

Country Link
US (1) US5846353A (enExample)
EP (1) EP0774530B1 (enExample)
JP (1) JPH09170016A (enExample)
KR (1) KR970027350A (enExample)
CN (1) CN1094994C (enExample)
CA (1) CA2184850C (enExample)
DE (2) DE19542919A1 (enExample)
RU (1) RU2191215C2 (enExample)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645186A1 (de) * 1996-11-02 1998-05-07 Asea Brown Boveri Wärmebehandlungsverfahren für Werkstoffkörper aus einer hochwarmfesten Eisen-Nickel-Superlegierung sowie wärmebehandelter Werkstoffkörper
KR100250810B1 (ko) * 1997-09-05 2000-04-01 이종훈 내식성 향상을 위한 니켈기 합금의 열처리방법
KR100757258B1 (ko) * 2006-10-31 2007-09-10 한국전력공사 고온등압압축-열처리 일괄공정에 의한 가스터빈용 니켈계초합금 부품의 제조방법 및 그 부품
US8663404B2 (en) * 2007-01-08 2014-03-04 General Electric Company Heat treatment method and components treated according to the method
US8668790B2 (en) * 2007-01-08 2014-03-11 General Electric Company Heat treatment method and components treated according to the method
KR101007582B1 (ko) * 2008-06-16 2011-01-12 한국기계연구원 파형 입계를 위한 니켈기 합금의 열처리 방법 및 그에 의한합금
US8313593B2 (en) * 2009-09-15 2012-11-20 General Electric Company Method of heat treating a Ni-based superalloy article and article made thereby
US20180057920A1 (en) * 2016-08-31 2018-03-01 General Electric Company Grain refinement in in706 using laves phase precipitation
JP7009928B2 (ja) * 2017-11-01 2022-02-10 大同特殊鋼株式会社 Ｆｅ－Ｎｉ基合金
CN111876649B (zh) * 2019-08-28 2022-05-24 北京钢研高纳科技股份有限公司 一种高铌高温合金大尺寸铸锭的冶炼工艺及高铌高温合金大尺寸铸锭
EP4023779B1 (en) 2019-08-28 2025-02-12 Gaona Aero Material Co., Ltd. Smelting process for high-niobium high-temperature alloy
CN111876651B (zh) * 2019-08-28 2022-05-24 北京钢研高纳科技股份有限公司 一种大尺寸高铌高温706合金铸锭及其冶炼工艺
CN114574793B (zh) * 2022-01-25 2023-03-14 东北大学 一种改善gh4706合金性能的热处理工艺
CN115896435A (zh) * 2022-12-14 2023-04-04 陕西宏远航空锻造有限责任公司 一种改善高温合金环形锻件硬度均匀性的固溶处理方法
CN116804260B (zh) * 2023-05-26 2024-10-25 东北大学 一种gh4706合金的热处理工艺及其获得的锻件与应用

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445943A (en) * 1981-09-17 1984-05-01 Huntington Alloys, Inc. Heat treatments of low expansion alloys
US4481043A (en) * 1982-12-07 1984-11-06 The United States Of America As Represented By The United States Department Of Energy Heat treatment of NiCrFe alloy to optimize resistance to intergrannular stress corrosion
US5047093A (en) * 1989-06-09 1991-09-10 The Babcock & Wilcox Company Heat treatment of Alloy 718 for improved stress corrosion cracking resistance
JPH04210457A (ja) * 1990-12-11 1992-07-31 Japan Steel Works Ltd:The Ｆｅ　−Ｎｉ　基析出硬化型超合金の製造方法
JPH05295497A (ja) * 1992-04-17 1993-11-09 Japan Steel Works Ltd:The 析出硬化型超耐熱合金の製造方法
JPH06240427A (ja) * 1993-02-16 1994-08-30 Japan Steel Works Ltd:The 析出硬化型超耐熱合金の製造方法
JPH06330161A (ja) * 1993-05-26 1994-11-29 Japan Steel Works Ltd:The 析出硬化型Ｆｅ−Ｎｉ基耐熱合金の製造方法
US5415712A (en) * 1993-12-03 1995-05-16 General Electric Company Method of forging in 706 components

Also Published As

Publication number Publication date
RU2191215C2 (ru) 2002-10-20
JPH09170016A (ja) 1997-06-30
KR970027350A (ko) 1997-06-24
DE59606461D1 (de) 2001-03-29
DE19542919A1 (de) 1997-05-22
CA2184850C (en) 2008-04-29
CN1165205A (zh) 1997-11-19
CA2184850A1 (en) 1997-05-18
EP0774530A1 (de) 1997-05-21
US5846353A (en) 1998-12-08
CN1094994C (zh) 2002-11-27

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