FR2343052A1 - Fine grained stainless steel prods. - produced by deformation and recrystallisation heat treatment giving resistance to intercrystalline corrosion - Google Patents

Fine grained stainless steel prods. - produced by deformation and recrystallisation heat treatment giving resistance to intercrystalline corrosion

Info

Publication number
FR2343052A1
FR2343052A1 FR7705976A FR7705976A FR2343052A1 FR 2343052 A1 FR2343052 A1 FR 2343052A1 FR 7705976 A FR7705976 A FR 7705976A FR 7705976 A FR7705976 A FR 7705976A FR 2343052 A1 FR2343052 A1 FR 2343052A1
Authority
FR
France
Prior art keywords
prods
recrystallisation
heat treatment
deformation
produced
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.)
Granted
Application number
FR7705976A
Other languages
French (fr)
Other versions
FR2343052B1 (en
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.)
Kubota Corp
Original Assignee
Kubota Corp
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
Priority claimed from JP2291376A external-priority patent/JPS52105521A/en
Priority claimed from JP2291476A external-priority patent/JPS52105522A/en
Priority claimed from JP516677A external-priority patent/JPS5389819A/en
Application filed by Kubota Corp filed Critical Kubota Corp
Publication of FR2343052A1 publication Critical patent/FR2343052A1/en
Application granted granted Critical
Publication of FR2343052B1 publication Critical patent/FR2343052B1/fr
Granted 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

At least part of the starting material of a cast stainless austenitic steel contg. ferrite is deformed plastically by >=10% and is then given a recrystallisation heat treatment to refine the cast structure. The casting pref. contains 5-40% of ferrite. Pref. the prods. are cast centrifugally. The steels so treated are resistant to intercrystalline corrosion, are not subject to surface undulations when formed, and can easily be inspected ultrasonically.
FR7705976A 1976-03-01 1977-03-01 Fine grained stainless steel prods. - produced by deformation and recrystallisation heat treatment giving resistance to intercrystalline corrosion Granted FR2343052A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2291376A JPS52105521A (en) 1976-03-01 1976-03-01 Production of stainless steel product having excellent grain boundary attack resistance and capable of ultrasonic detection of defects
JP2291476A JPS52105522A (en) 1976-03-01 1976-03-01 Production of stainless steel product having excellent grain boundary attack resistance and capable of ultrasonic detection of defects
JP516677A JPS5389819A (en) 1977-01-18 1977-01-18 Manufacture of austenitic stainless steel product containing ferritic phase

Publications (2)

Publication Number Publication Date
FR2343052A1 true FR2343052A1 (en) 1977-09-30
FR2343052B1 FR2343052B1 (en) 1981-04-10

Family

ID=27276624

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7705976A Granted FR2343052A1 (en) 1976-03-01 1977-03-01 Fine grained stainless steel prods. - produced by deformation and recrystallisation heat treatment giving resistance to intercrystalline corrosion

Country Status (2)

Country Link
DE (1) DE2708448A1 (en)
FR (1) FR2343052A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406666A1 (en) * 1977-10-20 1979-05-18 Concast Ag PROCESS FOR TREATING A CONTINUOUS CAST STAINLESS STEEL BAR
FR2432050A1 (en) * 1978-07-29 1980-02-22 Kernforschungsz Karlsruhe PROCESS FOR IMPROVING THE STRUCTURE OF AUSTENIC CHROME-NICKEL STEEL TUBES

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519419A (en) * 1966-06-21 1970-07-07 Int Nickel Co Superplastic nickel alloys
US4002510A (en) * 1975-05-01 1977-01-11 United States Steel Corporation Stainless steel immune to stress-corrosion cracking

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406666A1 (en) * 1977-10-20 1979-05-18 Concast Ag PROCESS FOR TREATING A CONTINUOUS CAST STAINLESS STEEL BAR
FR2432050A1 (en) * 1978-07-29 1980-02-22 Kernforschungsz Karlsruhe PROCESS FOR IMPROVING THE STRUCTURE OF AUSTENIC CHROME-NICKEL STEEL TUBES

Also Published As

Publication number Publication date
DE2708448A1 (en) 1977-10-13
FR2343052B1 (en) 1981-04-10

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Legal Events

Date Code Title Description
ST Notification of lapse