EP2924131B1 - Acier inoxydable austénitique à haute teneur en manganèse - Google Patents

Acier inoxydable austénitique à haute teneur en manganèse Download PDF

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Publication number
EP2924131B1
EP2924131B1 EP14162191.2A EP14162191A EP2924131B1 EP 2924131 B1 EP2924131 B1 EP 2924131B1 EP 14162191 A EP14162191 A EP 14162191A EP 2924131 B1 EP2924131 B1 EP 2924131B1
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EP
European Patent Office
Prior art keywords
stainless steel
manganese
cold
austenitic
austenitic high
Prior art date
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EP14162191.2A
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German (de)
English (en)
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EP2924131A1 (fr
Inventor
Arno Breuer
Gabriele BRÜCKNER
Linda Mosecker
Wolfgang Bleck
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Outokumpu Oyj
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Outokumpu Oyj
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Priority to SI201431382T priority Critical patent/SI2924131T1/sl
Application filed by Outokumpu Oyj filed Critical Outokumpu Oyj
Priority to RSP20191231 priority patent/RS59347B1/sr
Priority to LTEP14162191.2T priority patent/LT2924131T/lt
Priority to PL14162191T priority patent/PL2924131T3/pl
Priority to ES14162191T priority patent/ES2749234T3/es
Priority to HUE14162191A priority patent/HUE046585T2/hu
Priority to PT141621912T priority patent/PT2924131T/pt
Priority to DK14162191.2T priority patent/DK2924131T3/da
Priority to EP14162191.2A priority patent/EP2924131B1/fr
Priority to JP2016559607A priority patent/JP2017512906A/ja
Priority to US15/129,502 priority patent/US20170121797A1/en
Priority to MX2016012672A priority patent/MX2016012672A/es
Priority to CN201580016940.2A priority patent/CN106133177B/zh
Priority to TW104109969A priority patent/TW201540850A/zh
Priority to PCT/EP2015/056749 priority patent/WO2015144896A2/fr
Priority to KR1020167030176A priority patent/KR101830563B1/ko
Publication of EP2924131A1 publication Critical patent/EP2924131A1/fr
Priority to ZA2016/06617A priority patent/ZA201606617B/en
Application granted granted Critical
Publication of EP2924131B1 publication Critical patent/EP2924131B1/fr
Priority to HRP20191717 priority patent/HRP20191717T1/hr
Active legal-status Critical Current
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Classifications

    • 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
    • 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
    • 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
    • C21D8/0221—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 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
    • 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

Definitions

  • the invention relates to an austenitic high-manganese stainless steel having high strength and high ductility, wherein the stainless steel utilizes the TWIP (TWinning Induced Plasticity) mechanism during the deformation process.
  • TWIP TWinning Induced Plasticity
  • the austenitic stainless steels such as the most versatile and widely used 304 austenitic stainless steel, have a significantly lower strength combined with relatively high residual elongation after cold deformation, such as cold rolling.
  • the ferritic austenitic duplex stainless steels such as the 2304 ferritic austenitic duplex stainless steel, offer a high strength, but loose ductility with even a low cold deformation degree.
  • the austenitic manganese stainless steels with high carbon content are vulnerable to intergranular corrosion after welding in the weld and heat-affected zone due to chromium depletion in this area. Further, the typical manganese stainless steels are in general vulnerable to form martensitic phase after cold deformation, which could lead to delayed cracking.
  • the FR patent 2071667 relates to a nickel-free austenitic stainless steel which contains weight % 0.02 to 0.3 % carbon, 0.1 to 0.3 % silicon, 12.0 to 16.0 % chromium, 8.0 to 17.0 % manganese, 0.05 to 0.3 % nitrogen, 0.1 to 3.0 % copper, 0.1 to 3.0 % molybdenum, the balance being iron and evitable impurities.
  • the object of the FR patent application 2071667 is to have improved softening and better forming properties. However, based on the chemical composition of the FR patent application 2071667 the manganese (Mn) content should not contain more than 17 weight %, because a higher content produces less austenite phase.
  • the EP patent application 1069202 describes a method for manufacturing an austenitic, paramagnetic stainless steel and the steel consists, by weight %, of up to about 0.1 % carbon, about 0.21 to about 0.6 % silicon, about 17 to about 24 % chromium, up to about 2.5 % nickel, greater than about 20 % to less than about 30 % manganese, greater than about 0.6 % to less than about 1.4 % % nitrogen, up to about 0.3 % copper, up to about 1.9 % molybdenum, up to about 0.002 % boron, up to about 0.8 % carbide-forming elements, such as titanium, zirconium, vanadium and niobium, the balance being iron and evitable impurities.
  • Manganese is provided to increase the nitrogen solubility and to stabilize the austenitic and/or ferrite-free microstructure.
  • the material is hot-formed at a temperature of at least 850 °C to a degree of deformation of at least about 3,5 times and actively cooled.
  • the second step it is cold-formed in a deformation of 5 - 20 % below the deposit temperature of nitrides at elevated temperature below 600 °C, but greater than 350 °C.
  • the deformation is in every process step thus carried out at an elevated temperature which increases the manufacturing costs of the produced material.
  • a twinning in the microstructure of a metal material is in general defined as two separate crystals that share some of the same crystal lattice.
  • the TWIP (TWinning Induced Plasticity) stainless steels have austenitic microstructure with face-centered cubic lattice (FCC) along with a relatively low stacking fault energy (SFE) promoting the activation of twinning deformation mechanism, i.e. mechanically induced twinning in the crystal lattice.
  • FCC face-centered cubic lattice
  • SFE stacking fault energy
  • TWIP indicates that twinning often goes along with accomodation plasticity via lattice dislocations.
  • the object of the present invention is to eliminate some drawbacks of the prior art and to achieve an improved austenitic high-manganese stainless steel which utilizes the TWIP (TWinning Induced Plasticity) mechanism in the cold deformation in order to have a high work-hardening rate and good corrosion resistance with low vulnerability for intergranular corrosion after welding and for delayed cracking and stress corrosion cracking.
  • TWIP TWinning Induced Plasticity
  • the austenitic high-manganese stainless steel consists of in weight % 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 occurred in stainless steels.
  • the austenitic stainless steel of the invention further contains optionally 0,001 - 0,02 % titanium and optionally less than 0,04 % aluminium.
  • the austenitic stainless steel of the invention has a superior ductility and high strength after plastic deformation utilizing in the cold deformation the TWIP (TWinning Induced Plasticity) mechanism.
  • the austenitic stainless steel of the invention combines thus a high strength in the initial annealed state and a high work hardening rate with a high elongation after the cold deformation, such as cold rolling, in connection with a low nickel content.
  • the ranges for the yield strength R p0,2 and the tensile strength R m as well as the elongation to fracture A 80 at the annealed state the austenitic high-manganese stainless steel in accordance with the invention are 470 - 600 MPa for R p0,2 , 800 - 930 MPa for R m and 40 - 60 % for A 80 after annealed at the temperature range of 1000 - 1150 °C.
  • the austenitic high-manganese stainless steel of the invention has a high work-hardening rate of at least 20 % with the deformation degree 10 % and at least 40 % with the deformation degree 20 % for the yield strength R p0,2 . Further, the elongation to fracture A 80 is 25 - 35 % with the deformation degree 10 % and 10 - 20 % with the deformation degree 20 % showing the good ductility.
  • Carbon (C) is a valuable austenite forming and stabilizing element, which enables reduced use of expensive elements nickel and copper.
  • the upper limit for carbon alloying (less than 0,1 %) is set by the risk of carbide precipitation, which deteriorates the corrosion resistance of the stainless steel.
  • the carbon content is low enough to maintain good corrosion resistance. The reduction of the carbon content to low levels by the decarburization process is non-economical, and therefore, the carbon content shall not be less than 0,03 %.
  • Silicon (Si) is added to stainless steels for deoxidizing purposes during melting and should not be below 0,08 %. Because silicon is a ferrite forming element, its content must be limited below 1 %.
  • Manganese (Mn) is a key element of the austenitic stainless steel of the invention, ensuring the stable austenitic crystal structure and enabling the twinning mechanism and, further, the reduction of the use of more expensive nickel. Manganese also increases the solubility of nitrogen to the stainless steel. Plastic deformation accompanied with twinning deformation easily occurs in the case of an amount of manganese of 14 % or more without deformed structure, i.e. the strain-induced martensite. A high manganese content makes the decarburization process of the steel more difficult, impairs the surface quality and reduces the corrosion resistance of the steel. Therefore the manganese content shall be less than 26 %.
  • Chromium (Cr) is responsible of ensuring corrosion resistance of a stainless steel. Therefore, the chromium content in this stainless steel shall be at the minimum 10,5 %. Chromium is important in terms of avoiding the delayed cracking phenomenon. By increasing the content from this level the corrosion resistance of the steel can be improved. However, because chromium is a ferrite forming element, the increasing of the chromium content increases the need for expensive austenite formers, such as nickel and manganese or necessitates impractically high carbon and nitrogen contents. Therefore, the chromium content shall be lower than 18 %. Chromium also increases the solubility of nitrogen.
  • Nickel (Ni) is a strong austenite former and stabilizer, but nickel is an expensive element. However, very low nickel contents would necessitate impractically high alloying with the other austenite forming and stabilizing elements. Therefore, the nickel content shall be preferably lower than 0,8 % but preferably less than 0,5 %.
  • Copper (Cu) is present as a residual of 0,1 - 0,6 %. Copper is a weak stabilizer of the austenite phase but, however, has a strong effect on the resistance to martensite formation. Copper also has a positive effect on ductility and forming properties.
  • Nitrogen (N) is a strong austenite former and stabilizer. Therefore, nitrogen alloying improves the cost efficiency of the steel by enabling lower use of nickel and copper.
  • nitrogen content shall be at least 0,1 %. High nitrogen contents increase the strength of the steel and thus make forming operations more difficult. Furthermore, risk of nitride precipitation increases with increasing nitrogen content. For these reasons, the nitrogen content shall not exceed 0,8 %, preferably the nitrogen content shall be lower than 0,6 %.
  • Nitrogen increases the stacking fault energy (SFE), which is used for the prediction of the TWIP-effect, and thus enables for and facilitates the TWIP-effect.
  • SFE stacking fault energy
  • the austenitic stainless steel according to the invention does not form during cold rolling any deformation martensite at the room temperature or above. Therefore, the stainless steel of the invention has a high ductility.
  • the austenitic stainless steel according to the invention is also free of stress corrosion cracking and delayed cracking, just even after aging process in air and also in 5 % sodium chloride (NaCl) environment.
  • the austenitic stainless steel in accordance with invention was melted in the production scale and then cast into a slab form with the chemical composition in weight %, where the Mo-content of 0.02% is an accidental impurity.
  • Table 2 C Si Mn Cr Mo Ni Ti Cu Al N B 0.08 0.5 20 13 0.02 0.2 0.003 0.5 0.01 0.43 0.0023
  • the slabs were further hot rolled into the thickness of 4,0 mm and then annealed at the temperature 1080 °C.
  • the austenitic stainless steel of the invention was further cold rolled with the rolling degree of 50 % to the thickness of 2,0 mm and annealed at the temperature 1080 °C.
  • the annealed strip product was then tested by determining the yield strength R p0,2 and the tensile strength R m as well as the elongation to fracture A 80 .
  • the stainless steel strip was cold deformed with the reduction degree of 10 % and then determined the yield strength R p0,2 and the tensile strength R m as well as the elongation to fracture A 80 .
  • the respective actions were also made for the cold deformed strip having the reduction degree of 20 %.
  • the results for those test results are described in the following table: Table 3 Reduction degree R p0,2 (MPa) R m (MPa) A 80 (%) 0 % 500 830 48 10 % 800 950 28 20 % 1020 1180 14
  • the austenitic stainless steel in accordance with the invention has high work-hardening rate for the yield strength R p0,2 .
  • the elongation to fracture A 80 is 28 % with the deformation degree 10 % and 14 % with the deformation degree 20 % shows still a good ductility at high strength after cold rolling.
  • the austenitic stainless steel of the invention can be manufactured as slabs, blooms, billets and flat products such as coils, strips, plates, sheets, and long products such as bars, rods, wires, profiles and shapes, and tubular products such as pipes, tubes and can be applied for instance in automotive construction, tanks and crash relevant parts, construction and rail vehicles.
  • the high-manganese austenitic stainless steel in accordance with the invention can be cold deformed in the state of as hot strip annealed, as cold strip annealed and as hot and cold strip annealed and cold rolled in order to utilize the TWIP effect for higher yield and tensile strength values with still high ductility.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
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  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
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Claims (9)

  1. Acier inoxydable austénitique à teneur en manganèse élevée ayant une résistance et ductilité élevées, caractérisé en ce que l'acier inoxydable est constitué, en pourcentage massique, entre 0,03 et 0,1 % de carbone, entre 0,08 et 1,0 % de silicium, entre 14 et 26 % de manganèse, entre 10,5 et 18 % de chrome, moins de 0,8 % de nickel, entre 0,05 et 0,6 % de cuivre, entre 0,1 et 0,8 % d'azote et entre 0,0008 et 0,005 % de bore, le reste étant du fer et des impuretés inévitables survenant dans les aciers inoxydables, éventuellement entre 0,001 et 0,02 % de titane et éventuellement moins de 0,04 % d'aluminium; et qui se trouve dans l'état de recuit dans la plage de températures comprises entre 1000 et 1150°C, les plages pour la limite d'élasticité Rp0,2 et la tensions de traction Rm ainsi que l'allongement total à la rupture A80 sont comprises entre 470 et 600 MPa pour Rp0,2, entre 800 et 930 MPa pour Rm et entre 40 et 60 % pour A80, et l'acier pouvant être déformé à froid en utilisant le TWIP ou le mécanisme de plasticité induite par le jumelage de sorte que le taux d'écrouissage en fonction d'un degré de déformation à froid de 10 % pour la limite d'élasticité Rp0,2 est d'au moins 20 %.
  2. Acier inoxydable austénitique à teneur en manganèse élevée selon la revendication 1, caractérisé en ce que le taux d'écrouissage en fonction du degré de déformation à froid de 20 % pour la limite d'élasticité Rp0,2 est d'au moins 40 %.
  3. Acier inoxydable austénitique à teneur en manganèse élevée selon l'une quelconque des revendications précédentes, caractérisé en ce que l'allongement total à la rupture A80 est compris entre 25 est 35 ayant un degré de déformation à froid de 10 %.
  4. Acier inoxydable austénitique à teneur en manganèse élevée selon l'une quelconque des revendications précédentes, caractérisé en ce que l'allongement total à la rupture A80 est compris entre 10 et 20 ayant un degré de déformation à froid de 20 %.
  5. Acier inoxydable austénitique à teneur en manganèse élevée selon l'une quelconque des revendications précédentes, caractérisé en ce que l'acier inoxydable peut être déformé à froid pour l'effet TWIP dans l'état de recuit de bande laminée à chaud à la plage de températures comprises entre 1000 et 1150 °C.
  6. Acier inoxydable austénitique à teneur en manganèse élevée selon l'une quelconque des revendications 1 à 4 précédentes, caractérisé en ce que l'acier inoxydable peut être déformé à froid pour l'effet TWIP dans l'état de recuit de bande laminée à froid à la plage de températures comprises entre 1000 et 1150 °C.
  7. Acier inoxydable austénitique à teneur en manganèse élevée selon l'une quelconque des revendications 1 à 4 précédentes, caractérisé en ce que l'acier inoxydable peut être déformé à froid pour l'effet TWIP dans l'état de recuit laminé à chaud et à froid à la plage de températures comprises entre 1000 et 1150 °C et laminé à froid.
  8. Acier inoxydable austénitique à teneur en manganèse élevée selon l'une quelconque des revendications précédentes, caractérisé en ce que l'acier inoxydable austénitique est fabriquée sous forme de dalles, de blooms, de billets, de produits plats tels que des bobines, des bandes, des plaques, des feuilles, de produits longs tels que des barres, des tiges, des câbles, des profilés et des formes, des produits tubulaires tels que des tuyaux et des tubes.
  9. Acier inoxydable austénitique à teneur en manganèse élevée selon l'une quelconque des revendications précédentes, caractérisé en ce que l'acier inoxydable austénitique s'applique par exemple dans la construction automobile, dans les parties pertinentes de tanks et d'accidents, et dans les véhicules de construction et sur rail.
EP14162191.2A 2014-03-28 2014-03-28 Acier inoxydable austénitique à haute teneur en manganèse Active EP2924131B1 (fr)

Priority Applications (18)

Application Number Priority Date Filing Date Title
RSP20191231 RS59347B1 (sr) 2014-03-28 2014-03-28 Austenitni nerđajući čelik sa visokim sadržajem mangana
LTEP14162191.2T LT2924131T (lt) 2014-03-28 2014-03-28 Austenitinis manganinis nerūdijantis plienas
PL14162191T PL2924131T3 (pl) 2014-03-28 2014-03-28 Austenityczna wysokomanganowa stal nierdzewna
ES14162191T ES2749234T3 (es) 2014-03-28 2014-03-28 Acero inoxidable austenítico con alto contenido en manganeso
HUE14162191A HUE046585T2 (hu) 2014-03-28 2014-03-28 Ausztenites, magas mangántartalmú rozsdamentes acél
PT141621912T PT2924131T (pt) 2014-03-28 2014-03-28 Aço inoxidável austenítico com elevado teor em manganês
DK14162191.2T DK2924131T3 (da) 2014-03-28 2014-03-28 Austenitisk rustfrit stål
EP14162191.2A EP2924131B1 (fr) 2014-03-28 2014-03-28 Acier inoxydable austénitique à haute teneur en manganèse
SI201431382T SI2924131T1 (sl) 2014-03-28 2014-03-28 Avstenitno visokomangansko nerjavno jeklo
MX2016012672A MX2016012672A (es) 2014-03-28 2015-03-27 Acero inoxidable austenitico.
JP2016559607A JP2017512906A (ja) 2014-03-28 2015-03-27 オーステナイト系ステンレス鋼
CN201580016940.2A CN106133177B (zh) 2014-03-28 2015-03-27 奥氏体不锈钢
TW104109969A TW201540850A (zh) 2014-03-28 2015-03-27 沃斯田鐵系不銹鋼
PCT/EP2015/056749 WO2015144896A2 (fr) 2014-03-28 2015-03-27 Acier inoxydable austénitique
KR1020167030176A KR101830563B1 (ko) 2014-03-28 2015-03-27 오스테나이트계 스테인리스강
US15/129,502 US20170121797A1 (en) 2014-03-28 2015-03-27 Austenitic stainless steel
ZA2016/06617A ZA201606617B (en) 2014-03-28 2016-09-23 Austenitic stainless steel
HRP20191717 HRP20191717T1 (hr) 2014-03-28 2019-09-20 Austenitičan nehrđajući čelik s visokim udjelom mangana

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14162191.2A EP2924131B1 (fr) 2014-03-28 2014-03-28 Acier inoxydable austénitique à haute teneur en manganèse

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EP2924131A1 EP2924131A1 (fr) 2015-09-30
EP2924131B1 true EP2924131B1 (fr) 2019-08-21

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US (1) US20170121797A1 (fr)
EP (1) EP2924131B1 (fr)
JP (1) JP2017512906A (fr)
KR (1) KR101830563B1 (fr)
CN (1) CN106133177B (fr)
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PL3301197T3 (pl) 2016-09-29 2022-02-21 Outokumpu Oyj Sposób odkształcania na zimno stali austenitycznej
HUE051081T2 (hu) * 2017-02-10 2021-03-01 Outokumpu Oy Melegalakítással gyártott acél alkatrész, gyártási eljárás és az alkatrész felhasználása
KR102020507B1 (ko) * 2017-12-20 2019-09-10 주식회사 포스코 강도, 표면전도성이 향상된 비자성 오스테나이트계 스테인리스강
CN108103404A (zh) * 2017-12-28 2018-06-01 长沙无道工业设计有限公司 一种高强度不锈钢合金材料及其制备方法
CA3126854A1 (fr) * 2019-01-22 2020-07-30 Aperam Alliage fer-manganese a soudabilite amelioree
KR102665422B1 (ko) * 2019-01-25 2024-05-10 엘지이노텍 주식회사 디스플레이용 기판
CN110607479B (zh) * 2019-04-24 2021-11-05 上海大学 气门弹簧用不锈钢及其钢丝的制备方法
CN110103530B (zh) * 2019-06-04 2023-03-31 河北工业大学 一种高性能耐蚀twip/不锈钢多层复合材料及制备方法
CN111500942B (zh) * 2020-05-11 2021-08-10 湖南恒基粉末科技有限责任公司 一种高氮含量无磁不锈钢粉末及其制备方法
CN113046534B (zh) * 2021-03-15 2023-02-03 长春工业大学 一种高孪晶密度的高氮无镍奥氏体不锈钢的制备方法
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EP2924131A1 (fr) 2015-09-30
RS59347B1 (sr) 2019-10-31
MX2016012672A (es) 2016-12-14
ES2749234T3 (es) 2020-03-19
KR20160140828A (ko) 2016-12-07
ZA201606617B (en) 2018-05-30
KR101830563B1 (ko) 2018-02-20
PL2924131T3 (pl) 2020-02-28
US20170121797A1 (en) 2017-05-04
TW201540850A (zh) 2015-11-01
CN106133177B (zh) 2018-04-27
LT2924131T (lt) 2019-09-25
HRP20191717T1 (hr) 2019-12-13
JP2017512906A (ja) 2017-05-25
HUE046585T2 (hu) 2020-03-30
SI2924131T1 (sl) 2019-12-31
DK2924131T3 (da) 2019-10-14
PT2924131T (pt) 2019-10-30
CN106133177A (zh) 2016-11-16
WO2015144896A3 (fr) 2016-03-17
WO2015144896A2 (fr) 2015-10-01

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