JPS563620A - Preventing method for delayed fracture of austenite-base stainless steel - Google Patents

Preventing method for delayed fracture of austenite-base stainless steel

Info

Publication number
JPS563620A
JPS563620A JP7753079A JP7753079A JPS563620A JP S563620 A JPS563620 A JP S563620A JP 7753079 A JP7753079 A JP 7753079A JP 7753079 A JP7753079 A JP 7753079A JP S563620 A JPS563620 A JP S563620A
Authority
JP
Japan
Prior art keywords
cold
austenite
stainless steel
delayed fracture
strength
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
JP7753079A
Other languages
Japanese (ja)
Other versions
JPS5926646B2 (en
Inventor
Yukiaki Asayama
Tsugio Imamura
Yoshitaka Kawase
Maki Okada
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP54077530A priority Critical patent/JPS5926646B2/en
Publication of JPS563620A publication Critical patent/JPS563620A/en
Publication of JPS5926646B2 publication Critical patent/JPS5926646B2/en
Expired 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material

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)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To prevent delayed fracture without decreasing strength and without increasing intergranular corrosion crack sensitivity by cold-working the austenite- base stainless steel of high cold work hardenability then subjecting the same to the heat treatment under the specific conditions. CONSTITUTION:The austenite-base stainless steel is cold worked to increase its material strength by work hardening. This cold worked material is heated to temperatures of 500-600 deg.C in an atmosphere other than nitrogen gas or under vacuum. This heat-treatment time is made shorter than the time (t) calculated by formula I. In this way, the residual stress produced by cold working, particularly, the excessive residual stress produced in the stress-concentrated portions is decreased. This heat treatment enables the perfect prevention of delayed fracture without decreasing the strength having been increased by the cold working and without any increase in the intergranular corrosion crack sensitivity owing to deposition of carbide at the grain boundaries.
JP54077530A 1979-06-21 1979-06-21 Method for preventing delayed fracture of austenitic stainless steel Expired JPS5926646B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54077530A JPS5926646B2 (en) 1979-06-21 1979-06-21 Method for preventing delayed fracture of austenitic stainless steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54077530A JPS5926646B2 (en) 1979-06-21 1979-06-21 Method for preventing delayed fracture of austenitic stainless steel

Publications (2)

Publication Number Publication Date
JPS563620A true JPS563620A (en) 1981-01-14
JPS5926646B2 JPS5926646B2 (en) 1984-06-29

Family

ID=13636530

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54077530A Expired JPS5926646B2 (en) 1979-06-21 1979-06-21 Method for preventing delayed fracture of austenitic stainless steel

Country Status (1)

Country Link
JP (1) JPS5926646B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020092018A (en) * 2001-06-01 2002-12-11 오준택 Treatment method of wristwatch parts
CN109142081A (en) * 2018-06-29 2019-01-04 合肥通用机械研究院有限公司 A kind of steel product stress relaxation crack sensitivity evaluation method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49131910A (en) * 1973-02-02 1974-12-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49131910A (en) * 1973-02-02 1974-12-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020092018A (en) * 2001-06-01 2002-12-11 오준택 Treatment method of wristwatch parts
CN109142081A (en) * 2018-06-29 2019-01-04 合肥通用机械研究院有限公司 A kind of steel product stress relaxation crack sensitivity evaluation method

Also Published As

Publication number Publication date
JPS5926646B2 (en) 1984-06-29

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