HRP20191717T1 - Austenitic high-manganese stainless steel - Google Patents

Austenitic high-manganese stainless steel Download PDF

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Publication number
HRP20191717T1
HRP20191717T1 HRP20191717T HRP20191717T1 HR P20191717 T1 HRP20191717 T1 HR P20191717T1 HR P20191717 T HRP20191717 T HR P20191717T HR P20191717 T1 HRP20191717 T1 HR P20191717T1
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Croatia
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stainless steel
cold
austenitic stainless
high manganese
manganese content
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Croatian (hr)
Inventor
Arno Breuer
Gabriele Brückner
Linda Mosecker
Wolfgang Bleck
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Outokumpu Oy
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Publication of HRP20191717T1 publication Critical patent/HRP20191717T1/en

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    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold rolling
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • 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
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

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

Claims (9)

1. Austenitičan nehrđajući čelik s visokim udjelom mangana, visoke čvrstoće i duktilnosti, naznačen time da se nehrđajući čelik sastoji od masenih udjela % od 0,03 - 0,1 % ugljika, 0,08 – 1,0 % silicija, 14 – 26 % mangana, 10,5 – 18 % kroma, manje od 0,8 % nikla, 0,05 – 0,6 % bakra, 0,1 – 0,8 % dušika i 0,0008 – 0,005 % bora, ostatak bivajući željezo i neizbježne nečistoće koje se pojavljuju u nehrđajućem čeliku, opcionalno 0,001 – 0,02 % titanija i opcionalno manje od 0,04 % aluminija; i koji je u stanju žarenja pri temperaturi i rasponu od 1000 – 1150 °C, rasponi za granicu tečenja Rp0,2 i vlačnu čvrstoću Rm kao i elongaciju frakture A80 su 470 - 600 Mpa za Rp0,2 , 800 – 930 Mpa za Rm i 40 – 60 % za A80, i čelik je deformabilan u hladnom stanju korištenjem TWIP odnosno TWinning Induced Plasticity (Plastičnost inducirana pojavom dvojnih faza) mehanizma tako da je brzina hladne obrade na temelju stupnja hladne deformacije od 10 % za granicu tečenja Rp0,2 barem 20 %. 1. Austenitic stainless steel with a high manganese content, high strength and ductility, characterized by the fact that the stainless steel consists of mass fractions of 0.03 - 0.1% carbon, 0.08 - 1.0% silicon, 14 - 26 % manganese, 10.5-18% chromium, less than 0.8% nickel, 0.05-0.6% copper, 0.1-0.8% nitrogen and 0.0008-0.005% boron, the rest being iron and inevitable impurities that occur in stainless steel, optionally 0.001 - 0.02% titanium and optionally less than 0.04% aluminum; and which is in the annealing state at a temperature and range of 1000 – 1150 °C, the ranges for yield strength Rp0.2 and tensile strength Rm as well as fracture elongation A80 are 470 - 600 Mpa for Rp0.2 , 800 – 930 Mpa for Rm and 40 – 60% for A80, and the steel is cold deformable using the TWinning Induced Plasticity (TWINNING Induced Plasticity) mechanism so that the cold working rate based on the degree of cold deformation of 10% for yield strength Rp0.2 is at least 20 %. 2. Austenitičan nehrđajući čelik s visokim udjelom mangana prema zahtjevu 1, naznačen time da je brzina hladne obrade na temelju stupnja hladne deformacije od 20 % za granicu tečenja Rp0,2 barem 40 %.2. Austenitic stainless steel with a high manganese content according to claim 1, characterized in that the cold working rate based on the degree of cold deformation of 20% for yield strength Rp0.2 is at least 40%. 3. Austenitičan nehrđajući čelik s visokim udjelom mangana prema bilo kojem od prethodnih zahtjeva, naznačen time da je elongacija frakture A8020 – 35 % sa stupnjem hladne deformacije 20 %. 3. An austenitic stainless steel with a high manganese content according to any of the preceding claims, characterized in that the fracture elongation of A8020 is 35% with a degree of cold deformation of 20%. 4. Austenitičan nehrđajući čelik s visokim udjelom mangana prema bilo kojem od prethodnih zahtjeva, naznačen time da je elongacija frakture A8010 – 20 % sa stupnjem hladne deformacije 20 %.4. An austenitic stainless steel with a high manganese content according to any of the preceding claims, characterized in that the fracture elongation of A8010 is 20% with a degree of cold deformation of 20%. 5. Austenitičan nehrđajući čelik s visokim udjelom mangana prema bilo kojem od prethodnih zahtjeva, naznačen time da je nehrđajući čelik u stanju toplovaljane trake, koja se žari na temperaturi od 1000 – 1150 °C, deformabilan u hladnom stanju za TWIP efekt.5. An austenitic stainless steel with a high manganese content according to any of the preceding claims, characterized in that the stainless steel in the state of hot-rolled strip, which is annealed at a temperature of 1000-1150 °C, is deformable in the cold state for the TWIP effect. 6. Austenitičan nehrđajući čelik s visokim udjelom mangana prema bilo kojem od prethodnih zahtjeva 1 – 4, naznačen time da je nehrđajući čelik u stanju hladnovaljane trake, koja se žari na temperaturi od 1000 – 1150 °C, deformabilan u hladnom stanju za TWIP efekt.6. Austenitic stainless steel with a high manganese content according to any of the preceding claims 1 - 4, characterized in that the stainless steel in the state of cold-rolled strip, which is annealed at a temperature of 1000 - 1150 °C, is deformable in the cold state for the TWIP effect. 7. Austenitičan nehrđajući čelik s visokim udjelom mangana prema bilo kojem od prethodnih zahtjeva 1 – 4, naznačen time da je nehrđajući čelik u stanju toplovaljane i hladnovaljane trake, koja se žari na temperaturi od 1000 – 1150 °C, deformabilan u hladnom stanju za TWIP efekt i hladno valjan.7. Austenitic stainless steel with a high manganese content according to any of the preceding claims 1-4, characterized in that the stainless steel in the state of hot-rolled and cold-rolled strip, which is annealed at a temperature of 1000-1150 °C, is deformable in the cold state for TWIP effect and cold rolled. 8. Austenitičan nehrđajući čelik s visokim udjelom mangana prema bilo kojem od prethodnih zahtjeva, naznačen time da je austenitičan nehrđajući čelik proizveden u obliku greda, blokova, poluga, ravnih proizvoda poput zavojnica, traka, ploča, limova, dugih proizvoda poput štapova, šipki, žica, profila i oblika, cijevnih proizvoda poput cijevi, tuba. 8. Austenitic stainless steel with a high manganese content according to any of the preceding claims, characterized in that the austenitic stainless steel is produced in the form of beams, blocks, ingots, flat products such as coils, strips, plates, sheets, long products such as rods, bars, wires, profiles and shapes, tubular products such as pipes, tubes. 9. Austenitičan nehrđajući čelik s visokim udjelom mangana prema bilo kojem od prethodnih zahtjeva, naznačen time da je austenitičan nehrđajući čelik primijenjen na primjer u automobilskoj izradi, tankovima i dijelovima relevantnima kod sudara, građevini i tračnim vozilima.9. High manganese austenitic stainless steel according to any one of the preceding claims, characterized in that the austenitic stainless steel is applied for example in automotive, tanks and crash relevant parts, construction and rail vehicles.
HRP20191717 2014-03-28 2019-09-20 Austenitic high-manganese stainless steel HRP20191717T1 (en)

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EP14162191.2A EP2924131B1 (en) 2014-03-28 2014-03-28 Austenitic high-manganese stainless steel

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US (1) US20170121797A1 (en)
EP (1) EP2924131B1 (en)
JP (1) JP2017512906A (en)
KR (1) KR101830563B1 (en)
CN (1) CN106133177B (en)
DK (1) DK2924131T3 (en)
ES (1) ES2749234T3 (en)
HR (1) HRP20191717T1 (en)
HU (1) HUE046585T2 (en)
LT (1) LT2924131T (en)
MX (1) MX2016012672A (en)
PL (1) PL2924131T3 (en)
PT (1) PT2924131T (en)
RS (1) RS59347B1 (en)
SI (1) SI2924131T1 (en)
TW (1) TW201540850A (en)
WO (1) WO2015144896A2 (en)
ZA (1) ZA201606617B (en)

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Publication number Publication date
CN106133177B (en) 2018-04-27
LT2924131T (en) 2019-09-25
JP2017512906A (en) 2017-05-25
KR20160140828A (en) 2016-12-07
TW201540850A (en) 2015-11-01
HUE046585T2 (en) 2020-03-30
PL2924131T3 (en) 2020-02-28
KR101830563B1 (en) 2018-02-20
MX2016012672A (en) 2016-12-14
WO2015144896A3 (en) 2016-03-17
WO2015144896A2 (en) 2015-10-01
CN106133177A (en) 2016-11-16
PT2924131T (en) 2019-10-30
ES2749234T3 (en) 2020-03-19
US20170121797A1 (en) 2017-05-04
RS59347B1 (en) 2019-10-31
ZA201606617B (en) 2018-05-30
DK2924131T3 (en) 2019-10-14
SI2924131T1 (en) 2019-12-31
EP2924131B1 (en) 2019-08-21
EP2924131A1 (en) 2015-09-30

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