EP0839923B1 - Wärmebehandlungsverfahren für Werkstoffkörper aus einer hochwarmfesten Eisen-Nickel-Superlegierung sowie wärmebehandelter Werkstoffkörper - Google Patents

Wärmebehandlungsverfahren für Werkstoffkörper aus einer hochwarmfesten Eisen-Nickel-Superlegierung sowie wärmebehandelter Werkstoffkörper Download PDF

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Publication number
EP0839923B1
EP0839923B1 EP97810769A EP97810769A EP0839923B1 EP 0839923 B1 EP0839923 B1 EP 0839923B1 EP 97810769 A EP97810769 A EP 97810769A EP 97810769 A EP97810769 A EP 97810769A EP 0839923 B1 EP0839923 B1 EP 0839923B1
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EP
European Patent Office
Prior art keywords
heat treatment
treatment process
heat
hours
annealing
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
EP97810769A
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German (de)
English (en)
French (fr)
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EP0839923A1 (de
Inventor
Werner Dr. Balbach
Gunnar Prof. Dr. Härkegard
Reiner Redecker
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.)
ABB Schweiz AG
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ABB Schweiz AG
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Publication date
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Publication of EP0839923A1 publication Critical patent/EP0839923A1/de
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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

Definitions

  • the invention relates to a heat treatment process for material bodies an iron-nickel superalloy type IN 706 according to the generic term of first claim.
  • the invention also relates to heat treated Material body made of a heat-resistant iron-nickel super alloy from Type IN 706, especially for use in rotors of thermal machines.
  • the invention relates to a prior art, such as that of 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 has for its object a heat treatment process Specify the type mentioned, with a simple way Material body can be created from the alloy of type IN 706, which has a sufficiently high heat resistance, a high ductility and a crack growth is as slow as possible.
  • the essence of the invention is, therefore, solution annealing at approximately 965 to 995 ° C. during 5 to 20 hours, stabilization annealing at approximately 775 to 835 ° C for 5 up to 100 hours, and precipitation hardness at 715 to 745 ° C for 10 to 50 hours and at 595 to 625 ° C for 10 to 50 hours.
  • the process according to the invention is characterized in particular by the fact that it is simple to carry out and prevents the formation of excretions which have an embrittling effect.
  • extremely low crack growth is achieved in the heat-treated material bodies. With an expansion applied to the material body at a constant rate of 0.05% / h at a temperature of 600 ° C, total expansion of at least 2.5% is achieved without cracks.
  • material bodies produced according to the method according to the invention are distinguished by the fact that, with the usual chemical composition, no cracks occur due to grain size oxidation when voltage is applied.
  • a material body produced by the method according to the invention is therefore very well suited as a starting material in the manufacture of a thermally and mechanically highly loaded rotor of a large gas turbine.
  • the first stage of precipitation hardening became another, stabilizing one acting heat treatment stage upstream, in which the solution annealed Starting body is kept at different temperatures.
  • the heat treatment process H serves only as a comparison, at the stabilization annealing was omitted from this process.
  • Cooling of the starting bodies E, F and G to RT means that the bodies have been cooled to room temperature or at least below 300 ° C.
  • the cooling rates in air for the corresponding body sizes are about 0.5 ° C / min to 10 ° C / min and with oil 2 ° C / min to 20 ° C / min, in the temperature range above 700 ° C.
  • the holding times can fluctuate in the ranges specified above, the holding times and cooling speeds being influenced essentially by the size of the workpieces to be treated. This means that with larger workpieces, the holding time must be increased so that the workpieces can be fully warmed up. It is not necessary to cool to RT between the two curing annealing steps at 730 and 610 ° C.
  • Test specimens were produced from the material bodies E ', F', G 'and H' resulting from the heat treatment processes, the material characteristics of which are summarized in the table below.
  • the material bodies were further subjected to a so-called CSR test (constant strain rate).
  • the material body is at a temperature of 600 ° C stretched at a constant rate of 0.05% / h.
  • the Condition that the material body has an elongation of at least 2.5% can be applied without cracks, the material body E 'and F' Fulfills.
  • Fig. 1 and 2 are in a fracture surface image of a material body without stabilization annealing, for example H ', clearly called SAGBO-cracks (engl .: s tress a ccelerated g rain b oundary o xidation) recognized that occur when a voltage applied to the material body voltage .
  • SAGBO-cracks engagingl .: s tress a ccelerated g rain b oundary o xidation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
EP97810769A 1996-11-02 1997-10-13 Wärmebehandlungsverfahren für Werkstoffkörper aus einer hochwarmfesten Eisen-Nickel-Superlegierung sowie wärmebehandelter Werkstoffkörper Expired - Lifetime EP0839923B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19645186 1996-11-02
DE19645186A DE19645186A1 (de) 1996-11-02 1996-11-02 Wärmebehandlungsverfahren für Werkstoffkörper aus einer hochwarmfesten Eisen-Nickel-Superlegierung sowie wärmebehandelter Werkstoffkörper

Publications (2)

Publication Number Publication Date
EP0839923A1 EP0839923A1 (de) 1998-05-06
EP0839923B1 true EP0839923B1 (de) 2001-08-01

Family

ID=7810463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810769A Expired - Lifetime EP0839923B1 (de) 1996-11-02 1997-10-13 Wärmebehandlungsverfahren für Werkstoffkörper aus einer hochwarmfesten Eisen-Nickel-Superlegierung sowie wärmebehandelter Werkstoffkörper

Country Status (5)

Country Link
US (1) US6146478A (enExample)
EP (1) EP0839923B1 (enExample)
JP (1) JP4106113B2 (enExample)
CN (1) CN1080324C (enExample)
DE (2) DE19645186A1 (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100331153B1 (ko) * 1999-10-18 2002-04-01 황해웅 니켈-알루미늄합금의 미세조직 열처리방법
JP4382244B2 (ja) * 2000-04-11 2009-12-09 日立金属株式会社 耐高温硫化腐食性に優れたＮｉ基合金の製造方法
US6531005B1 (en) * 2000-11-17 2003-03-11 General Electric Co. Heat treatment of weld repaired gas turbine engine components
DE10153784B4 (de) 2001-04-12 2005-02-03 Trumpf Sachsen Gmbh Modulares Steuersystem für eine Ladevorrichtung mit gezielter Sauggreifersteuerung
US7244320B2 (en) * 2004-06-01 2007-07-17 United Technologies Corporation Methods for repairing gas turbine engine components
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
CN102203308B (zh) * 2008-11-06 2014-05-07 钛金属公司 制造用于内燃机排气系统的钛合金的方法
US8313593B2 (en) 2009-09-15 2012-11-20 General Electric Company Method of heat treating a Ni-based superalloy article and article made thereby
CN109402341A (zh) * 2018-12-10 2019-03-01 贵州航天精工制造有限公司 一种提高gh738自锁螺母锁紧性能的热处理方法
CN116814997A (zh) * 2023-08-30 2023-09-29 无锡亨通特种合金制造有限公司 一种镍基合金的制备工艺

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1133566B (de) * 1952-07-09 1962-07-19 Mond Nickel Co Ltd Verfahren zum Herstellen von Gegenstaenden aus Nií¬Crí¬Coí¬Al-Legierungen
DE1233609B (de) * 1961-01-24 1967-02-02 Rolls Royce Verfahren zur Waermebehandlung einer aushaertbaren Nickel-Chrom-Legierung
US4128419A (en) * 1973-03-14 1978-12-05 Terekhov Kuzma I Nickel-base alloy
DE3778731D1 (de) * 1986-01-20 1992-06-11 Sumitomo Metal Ind Legierung auf nickelbasis und verfahren zu ihrer herstellung.
DE3810336A1 (de) * 1988-03-26 1989-10-05 Vdm Nickel Tech Aushaertbare nickellegierung
US5059257A (en) * 1989-06-09 1991-10-22 Carpenter Technology Corporation Heat treatment of precipitation hardenable nickel and nickel-iron alloys
US5360496A (en) * 1991-08-26 1994-11-01 Aluminum Company Of America Nickel base alloy forged parts
US5374323A (en) * 1991-08-26 1994-12-20 Aluminum Company Of America Nickel base alloy forged parts
US5415712A (en) * 1993-12-03 1995-05-16 General Electric Company Method of forging in 706 components
DE19542919A1 (de) * 1995-11-17 1997-05-22 Asea Brown Boveri Verfahren zur Herstellung eines hochtemperaturbeständigen Werkstoffkörpers aus einer Eisen-Nickel-Superlegierung vom Typ IN 706

Also Published As

Publication number Publication date
CN1199103A (zh) 1998-11-18
CN1080324C (zh) 2002-03-06
DE59704179D1 (de) 2001-09-06
JP4106113B2 (ja) 2008-06-25
EP0839923A1 (de) 1998-05-06
JPH10140306A (ja) 1998-05-26
DE19645186A1 (de) 1998-05-07
US6146478A (en) 2000-11-14

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