MY205267A - Duplex stainless steel welded joint and method of production thereof - Google Patents

Duplex stainless steel welded joint and method of production thereof

Info

Publication number
MY205267A
MY205267A MYPI2021005661A MYPI2021005661A MY205267A MY 205267 A MY205267 A MY 205267A MY PI2021005661 A MYPI2021005661 A MY PI2021005661A MY PI2021005661 A MYPI2021005661 A MY PI2021005661A MY 205267 A MY205267 A MY 205267A
Authority
MY
Malaysia
Prior art keywords
stainless steel
welded joint
following formula
duplex stainless
weld metal
Prior art date
Application number
MYPI2021005661A
Inventor
KAKIHARA Toyohiko
Gohnome Fuminori
Tsuge Shinji
Oikawa Yuusuke
Original Assignee
Nippon Steel Stainless Steel 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
Application filed by Nippon Steel Stainless Steel Corp filed Critical Nippon Steel Stainless Steel Corp
Publication of MY205267A publication Critical patent/MY205267A/en

Links

Classifications

    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
    • 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
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • 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
    • 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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Arc Welding In General (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The present invention provides a welded joint excellent in corrosion resistance in a brackish water environment and toughness. The welded joint according to the present invention is provided with a duplex stainless steel base material having a PREN value defined by the following formula [1] of 28.0 or more and 35.0 or less and a weld zone including a weld metal and a heat affected zone, wherein the weld metal has a PREN value defined by the following formula [1] of 29.0 or more, the austenite phase of the duplex stainless steel base material accounts for 30 to 70 area% and the austenite phase of the weld metal and the heat affected zone respectively account for 8 to 70 area%, NI values defined by the following formula [2] are 170 or more, and the following formula [3] is satisfied: PREN=Cr+3.3Mo+16N... (1) NI=(Cr+Mo+2xNi)/N... (2) N=(0.08Cr+0.08Mo-0.06Ni-1.21)/0.4x0.08... (3)
MYPI2021005661A 2019-03-29 2020-03-27 Duplex stainless steel welded joint and method of production thereof MY205267A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019069005 2019-03-29
PCT/JP2020/014390 WO2020203931A1 (en) 2019-03-29 2020-03-27 Duplex stainless steel welded joint and method for manufacturing same

Publications (1)

Publication Number Publication Date
MY205267A true MY205267A (en) 2024-10-10

Family

ID=72668202

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2021005661A MY205267A (en) 2019-03-29 2020-03-27 Duplex stainless steel welded joint and method of production thereof

Country Status (6)

Country Link
JP (1) JP7270724B2 (en)
KR (1) KR102684006B1 (en)
CN (1) CN113631732B (en)
MY (1) MY205267A (en)
PH (1) PH12021552396A1 (en)
WO (1) WO2020203931A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7832433B2 (en) * 2021-06-04 2026-03-18 日本製鉄株式会社 Welded structure for sluice gates and method for manufacturing the same
JP2023118656A (en) * 2022-02-15 2023-08-25 日鉄ステンレス株式会社 Duplex stainless steel and method for producing duplex stainless steel
WO2024024236A1 (en) * 2022-07-29 2024-02-01 Ｊｆｅスチール株式会社 Microbiologically assisted cracking-resistant low-alloy steel
JP7804046B1 (en) * 2024-12-12 2026-01-21 株式会社Uex Welded joint manufacturing method, welded joint manufacturing condition calculation method, and welded joint
CN120079973B (en) * 2025-04-30 2025-07-08 佛山市双怡电器科技实业有限公司 Automatic welding method and welding system for air conditioner pipeline

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5180611A (en) * 1975-01-10 1976-07-14 Toyo Soda Mfg Co Ltd Anmoniasoodaho mataha enansoodahosochotaishokukinzokuzairyo
JPS5345070U (en) 1976-09-22 1978-04-17
US4832765A (en) * 1983-01-05 1989-05-23 Carpenter Technology Corporation Duplex alloy
JPS62267452A (en) * 1986-05-15 1987-11-20 Nisshin Steel Co Ltd Two-phase stainless steel excellent in corrosion resistance in weld zone
JP3201178B2 (en) * 1994-11-01 2001-08-20 住友金属工業株式会社 Method for manufacturing duplex stainless steel welded pipe
JPH1060597A (en) * 1996-08-14 1998-03-03 Sumitomo Metal Ind Ltd High strength duplex stainless steel with excellent toughness
JP2004360035A (en) * 2003-06-06 2004-12-24 Sanyo Special Steel Co Ltd Duplex stainless steel with excellent stress corrosion cracking resistance
JP5726537B2 (en) * 2011-01-06 2015-06-03 山陽特殊製鋼株式会社 Duplex stainless steel with excellent toughness
EP2676763B1 (en) 2011-02-14 2018-01-17 Nippon Steel & Sumitomo Metal Corporation Line pipe having a welded joint of duplex stainless steel
JP5868206B2 (en) * 2011-03-09 2016-02-24 新日鐵住金ステンレス株式会社 Duplex stainless steel with excellent weld corrosion resistance
CN102605288B (en) 2012-03-13 2015-03-25 宝山钢铁股份有限公司 Economical double-phase stainless steel with good welding property and manufacturing method for stainless steel
JP5857914B2 (en) * 2012-08-23 2016-02-10 新日鐵住金株式会社 Welding material for duplex stainless steel
CN102941402B (en) * 2012-11-09 2016-04-20 太原科技大学 A kind of welding method of super-duplex stainless steel
JP6614785B2 (en) * 2015-03-30 2019-12-04 日鉄ステンレス株式会社 Alloy-saving duplex stainless steel laser welded member with good laser weld characteristics and manufacturing method of alloy-saving duplex stainless steel laser welded member
JP6726499B2 (en) * 2016-03-29 2020-07-22 日鉄ステンレス株式会社 Duplex Stainless Steel Weld Joint, Duplex Stainless Steel Welding Method, and Duplex Stainless Steel Weld Joint Manufacturing Method

Also Published As

Publication number Publication date
CN113631732A (en) 2021-11-09
JPWO2020203931A1 (en) 2020-10-08
KR102684006B1 (en) 2024-07-12
WO2020203931A1 (en) 2020-10-08
CN113631732B (en) 2023-03-21
JP7270724B2 (en) 2023-05-10
PH12021552396A1 (en) 2022-06-13
KR20210129161A (en) 2021-10-27

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