FR2664909B1 - AUSTENITIC STEEL HAVING IMPROVED RESISTANCE AT HIGH TEMPERATURE AND METHOD FOR OBTAINING AND PRODUCING MECHANICAL PARTS, PARTICULARLY VALVES. - Google Patents

AUSTENITIC STEEL HAVING IMPROVED RESISTANCE AT HIGH TEMPERATURE AND METHOD FOR OBTAINING AND PRODUCING MECHANICAL PARTS, PARTICULARLY VALVES.

Info

Publication number
FR2664909B1
FR2664909B1 FR9009155A FR9009155A FR2664909B1 FR 2664909 B1 FR2664909 B1 FR 2664909B1 FR 9009155 A FR9009155 A FR 9009155A FR 9009155 A FR9009155 A FR 9009155A FR 2664909 B1 FR2664909 B1 FR 2664909B1
Authority
FR
France
Prior art keywords
steel
obtaining
austenitic steel
austenitic
high temperature
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 - Fee Related
Application number
FR9009155A
Other languages
French (fr)
Other versions
FR2664909A1 (en
Inventor
Georges Louis
Jean-Pierre Adret
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.)
Regie Nationale des Usines Renault
Original Assignee
Regie Nationale des Usines Renault
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 Regie Nationale des Usines Renault filed Critical Regie Nationale des Usines Renault
Priority to FR9009155A priority Critical patent/FR2664909B1/en
Priority to AT91401918T priority patent/ATE132202T1/en
Priority to DE69115779T priority patent/DE69115779T2/en
Priority to ES91401918T priority patent/ES2084793T3/en
Priority to EP91401918A priority patent/EP0467756B1/en
Publication of FR2664909A1 publication Critical patent/FR2664909A1/en
Application granted granted Critical
Publication of FR2664909B1 publication Critical patent/FR2664909B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Powder Metallurgy (AREA)

Abstract

An austenitic steel which has improved strength at high temperature and a process for obtaining such a steel. The objective of the invention is to provide a steel exhibiting both suitable mechanical characteristics associated with an improved resistance to corrosive agents, and a process for obtaining the said steel and for producing mechanical components. This objective is attained with the aid of an austenitic steel characterised in that it comprises especially (% by weight): - a carbon content lower than 0.4%, - a chromium content higher than 22%, - one or more carbide-forming elements chosen from the group consisting of niobium, titanium, tungsten, molybdenum and vanadium, the content of which is lower than 2.5%, - 0.40 to 0.60% of nitrogen, - 4 to 15% of nickel, - 2 to 10% of manganese, the balance of the combined constituents being such that the austenitic structure obtained is completely single-phase. The process according to the invention is characterised in that it consists in performing on an austenitic steel of abovementioned composition a dissolution of the constituents at a temperature of between 1000 and 1230 DEG C followed by a rapid cooling. It may additionally consist in carrying out a treatment for stabilising the structure at a temperature of between 720 and 860 DEG C for 1 to 50 hours. The present invention applies particularly to the manufacture of valves for motor vehicle engines.
FR9009155A 1990-07-18 1990-07-18 AUSTENITIC STEEL HAVING IMPROVED RESISTANCE AT HIGH TEMPERATURE AND METHOD FOR OBTAINING AND PRODUCING MECHANICAL PARTS, PARTICULARLY VALVES. Expired - Fee Related FR2664909B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR9009155A FR2664909B1 (en) 1990-07-18 1990-07-18 AUSTENITIC STEEL HAVING IMPROVED RESISTANCE AT HIGH TEMPERATURE AND METHOD FOR OBTAINING AND PRODUCING MECHANICAL PARTS, PARTICULARLY VALVES.
AT91401918T ATE132202T1 (en) 1990-07-18 1991-07-10 AUSTENITIC STEEL WITH INCREASED STRENGTH AT HIGH TEMPERATURES, METHOD FOR THE PRODUCTION THEREOF AND PRODUCTION OF MACHINE PARTS, IN PARTICULAR GAS EXCHANGE VALVE
DE69115779T DE69115779T2 (en) 1990-07-18 1991-07-10 Austenitic steel with increased strength at high temperatures, process for its manufacture and production of machine parts, in particular gas exchange valves
ES91401918T ES2084793T3 (en) 1990-07-18 1991-07-10 AUSTENITIC STEEL THAT HAS AN IMPROVED RESISTANCE TO HIGH TEMPERATURE AND PROCEDURE FOR ITS OBTAINING AND THE REALIZATION OF MECHANICAL PARTS, IN PARTICULAR OF VALVES.
EP91401918A EP0467756B1 (en) 1990-07-18 1991-07-10 Austenitic steel having improved strength properties at high temperature, process for its manufacturing and the fabrication of mechanical parts, more particularly of valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9009155A FR2664909B1 (en) 1990-07-18 1990-07-18 AUSTENITIC STEEL HAVING IMPROVED RESISTANCE AT HIGH TEMPERATURE AND METHOD FOR OBTAINING AND PRODUCING MECHANICAL PARTS, PARTICULARLY VALVES.

Publications (2)

Publication Number Publication Date
FR2664909A1 FR2664909A1 (en) 1992-01-24
FR2664909B1 true FR2664909B1 (en) 1994-03-18

Family

ID=9398848

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9009155A Expired - Fee Related FR2664909B1 (en) 1990-07-18 1990-07-18 AUSTENITIC STEEL HAVING IMPROVED RESISTANCE AT HIGH TEMPERATURE AND METHOD FOR OBTAINING AND PRODUCING MECHANICAL PARTS, PARTICULARLY VALVES.

Country Status (5)

Country Link
EP (1) EP0467756B1 (en)
AT (1) ATE132202T1 (en)
DE (1) DE69115779T2 (en)
ES (1) ES2084793T3 (en)
FR (1) FR2664909B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2808807B1 (en) 2000-05-10 2002-07-19 Metallurg Avancee Soc Ind De STEEL COMPOSITION, MANUFACTURING METHOD, AND SHAPED PARTS THEREOF, ESPECIALLY VALVES
US20020110476A1 (en) * 2000-12-14 2002-08-15 Maziasz Philip J. Heat and corrosion resistant cast stainless steels with improved high temperature strength and ductility
SI2714955T1 (en) 2011-05-26 2021-11-30 N'Genius Technology Limited Austenitic stainless steel
US10316694B2 (en) 2014-07-31 2019-06-11 Garrett Transportation I Inc. Stainless steel alloys, turbocharger turbine housings formed from the stainless steel alloys, and methods for manufacturing the same
US9534281B2 (en) 2014-07-31 2017-01-03 Honeywell International Inc. Turbocharger turbine housings formed from the stainless steel alloys, and methods for manufacturing the same
US9896752B2 (en) 2014-07-31 2018-02-20 Honeywell International Inc. Stainless steel alloys, turbocharger turbine housings formed from the stainless steel alloys, and methods for manufacturing the same
US11193190B2 (en) 2018-01-25 2021-12-07 Ut-Battelle, Llc Low-cost cast creep-resistant austenitic stainless steels that form alumina for high temperature oxidation resistance
US10927439B2 (en) 2018-05-30 2021-02-23 Garrett Transportation I Inc Stainless steel alloys, turbocharger components formed from the stainless steel alloys, and methods for manufacturing the same
CN109777924A (en) * 2019-03-02 2019-05-21 中国铁道科学研究院集团有限公司铁道建筑研究所 A kind of weathering steel high-strength bolt auxiliary connection heat treatment process
CN110306015A (en) * 2019-07-02 2019-10-08 中国铁道科学研究院集团有限公司铁道建筑研究所 A kind of weathering steel high-strength bolt auxiliary connection production technology

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2171726A (en) * 1938-04-12 1939-09-05 Roy C Howell Detachable coupling for electrical conductors
US2671726A (en) * 1950-11-14 1954-03-09 Armco Steel Corp High temperature articles
US3440038A (en) * 1965-02-06 1969-04-22 Mitsubishi Heavy Ind Ltd High tenacity chromium-nickel manganese austenitic steel
US3401036A (en) * 1967-08-11 1968-09-10 Crucible Steel Co America Valve steel
US3561953A (en) * 1968-03-19 1971-02-09 Toyota Motor Co Ltd Austenitic heat-resisting steel containing nickel, chromium and manganese
JPS5040099B1 (en) * 1971-03-09 1975-12-22
IT1219414B (en) * 1986-03-17 1990-05-11 Centro Speriment Metallurg AUSTENITIC STEEL WITH IMPROVED MECHANICAL RESISTANCE AND AGGRESSIVE AGENTS AT HIGH TEMPERATURES

Also Published As

Publication number Publication date
DE69115779D1 (en) 1996-02-08
EP0467756B1 (en) 1995-12-27
ATE132202T1 (en) 1996-01-15
ES2084793T3 (en) 1996-05-16
EP0467756A1 (en) 1992-01-22
FR2664909A1 (en) 1992-01-24
DE69115779T2 (en) 1996-05-30

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Legal Events

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CD Change of name or company name
AM Act modifying the rights related to an application or a patent
TQ Partial transmission of property
ST Notification of lapse