IN2014MN01789A - - Google Patents

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Publication number
IN2014MN01789A
IN2014MN01789A IN1789MUN2014A IN2014MN01789A IN 2014MN01789 A IN2014MN01789 A IN 2014MN01789A IN 1789MUN2014 A IN1789MUN2014 A IN 1789MUN2014A IN 2014MN01789 A IN2014MN01789 A IN 2014MN01789A
Authority
IN
India
Prior art keywords
parent material
room temperature
martensite
composition
point
Prior art date
Application number
Inventor
Hidetoshi Fujii
Yoshiaki Morisada
Original Assignee
Univ Osaka
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 Univ Osaka filed Critical Univ Osaka
Publication of IN2014MN01789A publication Critical patent/IN2014MN01789A/en

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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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Heat Treatment Of Steel (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Adornments (AREA)

Abstract

In the present invention a parent material for a ferrous material is heated to at least the A point which is the temperature at which austenite appears causing austenite to appear in the parent material (1a 1b) (S101). An amount of strain predicted to cause the M point to drop below room temperature is applied to the parent material (S102) the M point being the temperature at which the composition of the parent material as a whole changes to martensite. This prevents the composition of the parent material as a whole from changing to martensite when the ferrous material is cooled to room temperature. The parent material is cooled to room temperature at a cooling speed at which in a continuous cooling transformation (CCT) diagram a line extrapolated from the cooling curve of the parent material intersects with the region in which martensite is produced (S103). At room temperature austenite remains in the composition of the ferrous material manufactured.
IN1789MUN2014 2012-03-14 2013-03-12 IN2014MN01789A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012057986A JP5900922B2 (en) 2012-03-14 2012-03-14 Manufacturing method of steel
PCT/JP2013/056800 WO2013137249A1 (en) 2012-03-14 2013-03-12 Method for manufacturing ferrous material

Publications (1)

Publication Number Publication Date
IN2014MN01789A true IN2014MN01789A (en) 2015-07-03

Family

ID=49161155

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1789MUN2014 IN2014MN01789A (en) 2012-03-14 2013-03-12

Country Status (6)

Country Link
US (1) US9617613B2 (en)
JP (1) JP5900922B2 (en)
KR (1) KR102095607B1 (en)
CN (1) CN104204233B (en)
IN (1) IN2014MN01789A (en)
WO (1) WO2013137249A1 (en)

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JP6309183B1 (en) * 2016-06-27 2018-04-11 川崎重工業株式会社 Friction stir spot welding method and friction stir spot welding apparatus
JP6634616B2 (en) * 2016-07-29 2020-01-22 国立大学法人大阪大学 Steel for friction stir welding and friction stir welding method
US11794271B2 (en) * 2018-07-19 2023-10-24 Nippon Light Metal Company, Ltd. Method for manufacturing liquid-cooled jacket
JP2020075255A (en) * 2018-11-05 2020-05-21 日本軽金属株式会社 Liquid cooling jacket manufacturing method and friction stir welding method
US11794272B2 (en) * 2019-08-08 2023-10-24 Nippon Light Metal Company, Ltd. Automatic joining system
JP6698927B1 (en) * 2019-08-22 2020-05-27 株式会社フルヤ金属 Metal-based tubular material manufacturing method and backing jig used therefor
KR102147609B1 (en) 2019-12-12 2020-08-24 박성룡 Method and apparatus for controlling steel manufacturing process for press die
JP7347234B2 (en) * 2020-01-24 2023-09-20 日本軽金属株式会社 Liquid cooling jacket manufacturing method and friction stir welding method
JP7347235B2 (en) * 2020-01-24 2023-09-20 日本軽金属株式会社 Liquid cooling jacket manufacturing method and friction stir welding method
CN113798656B (en) * 2021-09-07 2023-07-25 西安建筑科技大学 A high-strength steel differential stable Austrian friction stir welding method and welded joint

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Also Published As

Publication number Publication date
US9617613B2 (en) 2017-04-11
JP2013189692A (en) 2013-09-26
WO2013137249A1 (en) 2013-09-19
KR102095607B1 (en) 2020-03-31
CN104204233B (en) 2016-07-20
US20150007912A1 (en) 2015-01-08
KR20140132396A (en) 2014-11-17
JP5900922B2 (en) 2016-04-06
CN104204233A (en) 2014-12-10

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