EP0136998B1 - Alliage forgeable à base de nickel et procédé pour son traitement thermique - Google Patents

Alliage forgeable à base de nickel et procédé pour son traitement thermique Download PDF

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Publication number
EP0136998B1
EP0136998B1 EP84890149A EP84890149A EP0136998B1 EP 0136998 B1 EP0136998 B1 EP 0136998B1 EP 84890149 A EP84890149 A EP 84890149A EP 84890149 A EP84890149 A EP 84890149A EP 0136998 B1 EP0136998 B1 EP 0136998B1
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EP
European Patent Office
Prior art keywords
max
wrought nickel
heat treatment
alloy
based alloy
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
Application number
EP84890149A
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German (de)
English (en)
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EP0136998A1 (fr
Inventor
Herbert Dipl.-Ing. Aigner
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.)
Voest-Alpine Stahl AG Te Linz Ad
Original Assignee
Vereinigte Edelstahlwerke AG
Voestalpine Stahl GmbH
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Publication date
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Application filed by Vereinigte Edelstahlwerke AG, Voestalpine Stahl GmbH filed Critical Vereinigte Edelstahlwerke AG
Publication of EP0136998A1 publication Critical patent/EP0136998A1/fr
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
    • 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
    • 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
    • C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
    • 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 wrought nickel alloy with the alloy components C, Si, Mn, Cr, Mo, Cu, Ti and Fe with the aim of making a substantial increase in strength possible by a special heat treatment by changing the percentage composition.
  • This alloy is generally used in the solution-annealed state, whereby (the mechanical characteristics refer to RT in the following) a tensile strength of about 600 to max. 700 N / mm 2 and a 0.2% proof stress from about 230 to max. 270 N / mm2.
  • the work hardened condition is also common for pipes and rods, with the work hardening achieved being of the order of magnitude as is the case for austenitic Cr-Ni steels; the tensile strength is accordingly for cold-formed pipes up to about 800 N / mm 2 and the 0.2% proof stress up to about 500 N / mm 2 .
  • Such an alloy also has a permeability below 1.010, with which it can be described as non-magnetic.
  • the invention also includes the heat-treated alloy.
  • a preferred method for the heat treatment of this wrought nickel alloy is characterized in that after solution annealing in the temperature range from 980-1170 ° C. with a holding time of at least 5 minutes in order to achieve a further increase in strength, the temperature is preferably set to 650-800 ° C. 680 - 770 ° C, is carried out for a period of 3 to 20 h, preferably from 6 to 16 h.
  • a further increase in these mechanical parameters can still be achieved in that, after solution annealing, a cold deformation with a degree of deformation of 5 to 15% is interposed.
  • the invention further relates to the use of the alloy as a material for non-magnetic parts, for. B. housing parts, boring bar parts and the like., In particular for the development and / or promotion of gaseous and / or liquid fossil fuels. It was quite surprising that with the increased addition of titanium, in addition to the possible increase in strength values, a permeability is also achieved which allows this material to be used for such components, while at the same time the low susceptibility to stress corrosion cracking makes this material suitable for use in drilling and Conveyor technology, e.g. B. as non-magnetic collars or as a housing for corresponding magnetic measuring devices and the like., Is extremely suitable.
  • melt no. 1 the composition of eleven test melts is compared to that of melt no. 1, the alloys according to the invention, beginning with melt no. 2, differing in particular from an increasing titanium content.
  • the permeability of samples 1 to 12 decreases with increasing titanium content, the permeability coming below approximately 1.01 from a titanium content of 1.2%, so that here a technically as non-magnetic significant material is present.

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  • 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)
  • Soft Magnetic Materials (AREA)
  • Forging (AREA)
  • Furnace Charging Or Discharging (AREA)

Claims (6)

1. Alliage forgeable à base de nickel, avec les éléments d'alliage C, Si, Mn, Cr, Mo, Cu, Ti et Fe, caractérisé en ce qu'il contient
max. 0,1 % C,
max 1 % Si,
max. 1,5 % Mn,
36,5 à 46,0 % Ni,
18,5 à 26,0 % Cr,
1,0 à 4,0 % Mo,
1,0 à 4,0 % Cu,
1,35 à 2,60 % Ti,
éventuellement jusqu'à 0,7 % AI, et/ou
0,3 à 1,2 % Nb/Ta,
le reste étant essentiellement constitué de Fe et des impuretés dues à l'élaboration.
2. Alliage forgeable à base de nickel selon la revendication 1, caractérisé en ce qu'il contient jusqu'à 0,5 à AI, et/ou
0,5 à 1,2 % Nb/Ta.
3. Procédé pour le traitement thermique des alliages forgeables à base de nickel selon la revendication 1 ou 2, caractérisé en ce que, après un recuit de mise en solution dans l'intervalle de températures de 980 à 1170 C, avec une durée de maintien d'au moins 5 minutes pour arriver à une augmentation de la résistance mécanique, on procède, pendant une durée de 3 à 20 heures, à un ajustement de la température à 650-800° C.
4. Procédé pour le traitement thermique de l'alliage forgeable à base de nickel selon la revendication 1 ou 2 et 3, caractérisé en ce que, pour arriver à une augmentation de la résistance mécanique, on procède à un ajustement de la température à 680-770°C pendant une durée de 6 à 16 heures.
5. Procédé selon les revendications 1 ou 2 et 3 ou 4, caractérisé en ce que, après le recuit de mise en solution, on intercale un formage à froid, avec un degré de déformation de 5 à 15 %.
6. Utilisation d'un alliage élaboré selon les revendications 3 à 5, caractérisée par un matériau pour pièces magnétiques, comme par exemple des éléments de carter, des éléments de tiges de forage et assimilés, en particulier pour la mise en valeur et/ou la récupération de combustibles fossiles gazeux et/ou liquides.
EP84890149A 1983-08-10 1984-08-07 Alliage forgeable à base de nickel et procédé pour son traitement thermique Expired EP0136998B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT288783 1983-08-10
AT2887/83 1983-08-10

Publications (2)

Publication Number Publication Date
EP0136998A1 EP0136998A1 (fr) 1985-04-10
EP0136998B1 true EP0136998B1 (fr) 1988-04-06

Family

ID=3541874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84890149A Expired EP0136998B1 (fr) 1983-08-10 1984-08-07 Alliage forgeable à base de nickel et procédé pour son traitement thermique

Country Status (3)

Country Link
EP (1) EP0136998B1 (fr)
AT (1) ATE33404T1 (fr)
DE (1) DE3470329D1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698883B1 (fr) * 1992-12-09 1995-01-13 Sima Sa Alliage base nickel du système quaternaire Ni-Fe-Cr-Mo à durcissement par précipitation de phase gamma prime et résistant aux modes de corrosion rencontrés notamment dans l'industrie pétrolière.
US5873950A (en) * 1996-06-13 1999-02-23 Inco Alloys International, Inc. Strengthenable ethylene pyrolysis alloy
EP3161174B1 (fr) * 2014-06-27 2018-06-06 Nuovo Pignone S.r.l. Élément constitutif d'une turbomachine, turbomachine et leur procédé de fabrication
CN104451339B (zh) * 2014-12-23 2017-12-12 重庆材料研究院有限公司 低镍时效强化型铁镍基耐蚀合金及制备方法
CN105483494B (zh) * 2015-12-01 2018-02-06 重庆材料研究院有限公司 易加工成厚壁无缝管的时效强化型铁镍基耐蚀合金
CN109072365A (zh) * 2016-03-31 2018-12-21 新日铁住金株式会社 Ni-Fe-Cr合金
ITUA20163944A1 (it) 2016-05-30 2017-11-30 Nuovo Pignone Tecnologie Srl Process for making a component of a turbomachine, a component obtainable thereby and turbomachine comprising the same / Processo per ottenere un componente di turbomacchina, componente da esso ottenibile e turbomacchina che lo comprende
DE102020132909A1 (de) 2020-12-10 2022-06-15 Vdm Metals International Gmbh Nickellegierung
DE102020132910A1 (de) 2020-12-10 2022-06-15 Vdm Metals International Gmbh Aushärtbare Nickellegierung
CN113584381B (zh) * 2021-07-05 2023-03-07 重庆材料研究院有限公司 高强度含铜Ni-Fe-Cr基时效硬化型耐蚀合金及其电渣重熔的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641540A (en) * 1951-07-19 1953-06-09 Allegheny Ludlum Steel Ferrous base chromium-nickel-titanium alloy
US2777766A (en) * 1952-06-04 1957-01-15 Union Carbide & Carbon Corp Corrosion resistant alloys
US2865741A (en) * 1957-11-06 1958-12-23 United States Steel Corp Acid resistant austenitic stainless steel
GB889243A (en) * 1958-02-24 1962-02-14 Allegheny Ludlum Steel Improvements in or relating to austenitic alloys
NO831752L (no) * 1982-05-17 1983-11-18 Kobe Steel Ltd Austenittiske legeringer med hoeyt nikkelinnhold.

Also Published As

Publication number Publication date
ATE33404T1 (de) 1988-04-15
EP0136998A1 (fr) 1985-04-10
DE3470329D1 (en) 1988-05-11

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