EP3899064B1 - Matériau superausténitique - Google Patents

Matériau superausténitique Download PDF

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Publication number
EP3899064B1
EP3899064B1 EP19829564.4A EP19829564A EP3899064B1 EP 3899064 B1 EP3899064 B1 EP 3899064B1 EP 19829564 A EP19829564 A EP 19829564A EP 3899064 B1 EP3899064 B1 EP 3899064B1
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Prior art keywords
material according
threshold value
nitrogen
detection level
below detection
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EP19829564.4A
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German (de)
English (en)
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EP3899064C0 (fr
EP3899064A1 (fr
Inventor
Andreas KEPLINGER
Rainer FLUCH
Clemens Vichytil
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Voestalpine Boehler Edelstahl GmbH and Co KG
Voestalpine Boehler Bleche GmbH and Co KG
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Voestalpine Boehler Edelstahl GmbH and Co KG
Voestalpine Boehler Bleche GmbH and Co KG
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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
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • 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
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    • 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
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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    • 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
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    • 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
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    • 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
    • C21D7/10—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
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    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
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    • 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
    • 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
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    • 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
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    • 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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
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    • C21—METALLURGY OF IRON
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    • 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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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    • 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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273—Final recrystallisation annealing
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    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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    • 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
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    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • 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
    • 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
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
    • 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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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    • 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

Definitions

  • the steel according to the invention should be free of precipitation, since precipitation has a negative impact on toughness and corrosion resistance.
  • the carbon content in particular is limited to 0.50%.
  • the copper content is deliberately added.
  • a special feature of the invention is that due to the high nitrogen content, the work hardening rate is higher than with other super austenites in order to be able to achieve tensile strengths (R m of 2000 MPa). This makes it possible as the last production step by cold rolling or other cold forming processes with high forming rates achieve strain hardening.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Steel (AREA)
  • Conductive Materials (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatment Of Articles (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Soft Magnetic Materials (AREA)

Claims (22)

  1. Matériau superausténitique composé d'un alliage ayant les éléments
    d'alliage suivants, toutes les données étant exprimées en % en poids, ainsi que les impuretés inévitables :
    Éléments Carbone (C) 0,01 - 0,50 Silicium (Si) < 0,5 Manganèse (Mn) 0,1 - 5,0 Phosphore(P) < 0,05 Soufre (S) < 0,005 Fer (Fe) fraction Chrome (Cr) 24,0 - 33,0 Molybdène (Mo) 2,0 - 5,0 Nickel (Ni) 12 - 20,0 Vanadium (V) < 0,5 Tungstène (W) < 0,5 Cuivre (Cu) 0,50 - 5,0 Cobalt (Co) < 5,0 Titane (Ti) <0,1 Aluminium (Al) < 0,2 Niobium (Nb) < 0,1 Bore (B) < 0,01 Azote (N) 0,40 - 0,90.
  2. Matériau superausténitique selon la revendication 1,
    caractérisé en ce que l'alliage est constitué des éléments suivants ainsi que d'impuretés inévitables, toutes les données étant exprimées en % en poids :
    Éléments Carbone (C) 0,01 - 0,30 Silicium (Si) < 0,5 Manganèse (Mn) 0,5 - 4,0 Phosphore(P) < 0,05 Soufre (S) < 0,005 Fer (Fe) fraction Chrome (Cr) 24,0 - 30,0 Molybdène (Mo) 3,0 - 5,0 Nickel (Ni) 14,0 - 19,0 Vanadium (V) < 0,3 Tungstène (W) <0,1 Cuivre (Cu) 0,75 - 3,5 Cobalt (Co) < 0,5 Titane (Ti) < 0,05 Aluminium (Al) < 0,1 Niobium (Nb) < 0,025 Bore (B) < 0,005 Azote (N) 0,40 - 0,70
  3. Matériau superausténitique selon la revendication 1 ou 2,
    caractérisé en ce que l'alliage est constitué des éléments suivants ainsi que d'impuretés inévitables, toutes les données étant exprimées en % en poids :
    Éléments Carbone (C) 0,01 - 0,10 Silicium (Si) < 0,5 Manganèse (Mn) 1,0 - 4,0 Phosphore(P) < 0,05 Soufre (S) < 0,005 Fer (Fe) fraction Chrome (Cr) 26,0 - 29,0 Molybdène (Mo) 3,5 - 4,5 Nickel (Ni) 15,0 - 18,0 Vanadium (V) Inférieur à la limite de détection Tungstène (W) Inférieur à la limite de détection Cuivre (Cu) 1,0 - 2,0 Cobalt (Co) Inférieur à la limite de détection Titane (Ti) Inférieur à la limite de détection Aluminium (Al) < 0,1 Niobium (Nb) Inférieur à la limite de détection Bore (B) < 0,005 Azote (N) 0,45 - 0,60.
  4. Matériau selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le matériau est obtenu par traitement métallurgique secondaire de la masse fondue, coulée en lingots, formage à chaud, éventuellement formage à froid et éventuellement traitement mécanique ultérieur.
  5. Matériau selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la limite d'élasticité Rp0,2 est >500 MPa.
  6. Matériau selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la résilience à température ambiante en orientation longitudinale Av est > 300 J.
  7. Matériau selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    après le formage à froid, le matériau est entièrement austénitique, c'est-à-dire exempt de martensite de déformation.
  8. Matériau selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le manganèse présente comme valeur limite supérieure 3,0 % ou 3,5 % ou 4,0 % ou 4,5 % ou 5,0 % et comme valeur limite inférieure 0,1 % ou 0,5 % ou 1,0 % ou 2,0 % ou 2,5 %.
  9. Matériau selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le chrome présente comme valeur limite supérieure 28 % ou 29 % ou 29,8 ou 31,5 % et comme valeur limite inférieure 24,0 ou 25 % ou 26 %.
  10. Matériau selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le molybdène présente comme valeur limite supérieure 4,4 ou 4,5 ou 4,6 ou 4,7 ou 4,8 ou 4,9 ou 5,0 % % et
    comme valeur limite inférieure 2,05 % ou 2,1 % ou 2,2 % ou 2,3 % ou 2,4 % ou 2,5 % ou 3,0 % ou 3,2 % ou 3,3 % ou 3,4 % ou 3,5 %.
  11. Matériau selon l'une quelconque des revendications précédentes, caractérisé en ce que le nickel présente comme valeur limite supérieure 16,8 % ou 17 ou 18 ou 19 % et comme valeur limite inférieure 12 % ou 13 % ou 14 % ou 15 %.
  12. Matériau selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'azote présente comme valeur limite supérieure 0,60 % ou 0,65 % ou 0,70 % ou 0,75 % ou 0,80 % ou 0,85 % ou 0,88 % et comme valeur limite inférieure 0,46 % ou 0,50 % ou 0,55 %.
  13. Matériau selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le cobalt est < 1 % ou < 0,5 % ou < 0,4 % ou < 0,3 % ou <
    0,2 % ou < 0,1 % ou en dessous de la limite de détection.
  14. Matériau selon l'une quelconque des revendications précédentes, caractérisé en ce que
    le cuivre présente comme valeur limite supérieure 5,0 % ou 4,5 % ou 4,0 % ou 3,5 % ou 3,0 % ou 2,5 % ou 2 % et comme valeur limite inférieure 0,60 % ou 0,70 % ou 0,80 % ou 0,90 % ou 1,0 % ou 1,1 %.
  15. Matériau selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le tungstène est < 0,5 % ou < 0,3 % ou < 0,2 % ou < 0,1 % ou en dessous de la limite de détection.
  16. Procédé de fabrication d'un matériau selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'alliage est composé des éléments suivants ainsi que des impuretés inévitables, toutes les données étant exprimées en % en poids :
    Éléments Carbone (C) 0,01 - 0,50 Silicium (Si) < 0,5 Manganèse (Mn) 0,1 - 5,0 Phosphore(P) < 0,05 Soufre (S) < 0,005 Fer (Fe) fraction Chrome (Cr) 24,0 - 33,0 Molybdène (Mo) 2,0 - 5,0 Nickel (Ni) 12 - 20,0 Vanadium (V) < 0,5 Tungstène (W) < 0,5 Cuivre (Cu) 0,50 - 5,0 Cobalt (Co) < 5,0 Titane (Ti) <0,1 Aluminium (Al) < 0,2 Niobium (Nb) < 0,1 Bore (B) < 0,01 Azote (N) 0,40 - 0,90
    est fondu puis soumis à un traitement métallurgique secondaire, l'alliage ainsi obtenu est ensuite coulé en lingots et laissé se solidifier, puis directement chauffé et formé à chaud, les produits étant notamment soumis à un nouveau formage à froid suivi d'un usinage mécanique.
  17. Procédé de fabrication d'un matériau selon la revendication 16,
    caractérisé en ce que
    l'alliage est constitué des éléments suivants ainsi que d'impuretés inévitables, toutes les données étant exprimées en % en poids :
    Éléments Carbone (C) 0,01 - 0,30 Silicium (Si) < 0,5 Manganèse (Mn) 0,5 - 4,0 Phosphore(P) < 0,05 Soufre (S) < 0,005 Fer (Fe) fraction Chrome (Cr) 24,0 - 30,0 Molybdène (Mo) 3,0 - 5,0 Nickel (Ni) 14,0 - 19,0 Vanadium (V) < 0,3 Tungstène (W) < 0,1 Cuivre (Cu) 0,75 - 3,5 Cobalt (Co) < 0,5 Titane (Ti) < 0,05 Aluminium (Al) < 0,1 Niobium (Nb) < 0,025 Bore (B) < 0,005 Azote (N) 0,40 - 0,70
  18. Procédé de fabrication d'un matériau selon la revendication 16 ou 17, caractérisé en ce que
    l'alliage est constitué des éléments suivants ainsi que d'impuretés inévitables, toutes les données étant exprimées en % en poids :
    Éléments Carbone (C) 0,01 - 0,10 Silicium (Si) < 0,5 Manganèse (Mn) 1,0 - 4,0 Phosphore(P) < 0,05 Soufre (S) < 0,005 Fer (Fe) fraction Chrome (Cr) 26,0 - 29,0 Molybdène (Mo) 3,5 - 4,5 Nickel (Ni) 15,0 - 18,0 Vanadium (V) Inférieur à la limite de détection Tungstène (W) Inférieur à la limite de détection Cuivre (Cu) 1,0 - 2,0 Cobalt (Co) Inférieur à la limite de détection Titane (Ti) Inférieur à la limite de détection Aluminium (Al) < 0,1 Niobium (Nb) Inférieur à la limite de détection Bore (B) < 0,005 Azote (N) 0,45 - 0,60.
  19. Procédé selon l'une quelconque des revendications 16 à 18,
    caractérisé en ce que
    le formage à chaud s'effectue en plusieurs étapes partielles.
  20. Procédé selon l'une quelconque des revendications 16 à 19,
    caractérisé en ce que
    le produit est à nouveau chauffé entre les étapes partielles de formage à chaud, et un recuit de mise en solution est effectué si nécessaire après la dernière étape de formage à chaud.
  21. Procédé selon l'une quelconque des revendications 16 à 20,
    caractérisé en ce que
    après la dernière étape de formage à chaud ainsi que le recuit de mise en solution optionnel, une étape de formage à froid est effectuée pour obtenir une résistance à la traction Rm > 1000 MPa, en particulier Rm > 2000 MPa.
  22. Utilisation d'un matériau selon l'une quelconque des revendications 1 à 15, en particulier fabriqué par un procédé selon l'une quelconque des revendications 16 à 21 pour des installations et des parties d'installations qui sont exposées à une attaque acide sulfurique, en particulier des installations de désulfuration de gaz de fumée.
EP19829564.4A 2018-12-20 2019-12-19 Matériau superausténitique Active EP3899064B1 (fr)

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DE102018133255.6A DE102018133255A1 (de) 2018-12-20 2018-12-20 Superaustenitischer Werkstoff
PCT/EP2019/086385 WO2020127789A1 (fr) 2018-12-20 2019-12-19 Matériau superausténitique

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CN115992330B (zh) * 2023-02-17 2024-04-19 东北大学 一种高氮低钼超级奥氏体不锈钢及其合金成分优化设计方法

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CA3122044A1 (fr) 2020-06-25
EP3899063B1 (fr) 2023-08-30
DE102018133255A1 (de) 2020-06-25
PL3899064T3 (pl) 2023-11-20
ES2956332T3 (es) 2023-12-19
EA202191413A1 (ru) 2021-09-28
PL3899063T3 (pl) 2023-12-04
US20220145436A1 (en) 2022-05-12
EP3899063A1 (fr) 2021-10-27
CN113544295A (zh) 2021-10-22
WO2020127789A1 (fr) 2020-06-25
US20240052469A2 (en) 2024-02-15
CN113544294A (zh) 2021-10-22
US20230332282A1 (en) 2023-10-19
EA202191412A1 (ru) 2021-09-28
BR112021011844A8 (pt) 2023-05-09
WO2020127788A1 (fr) 2020-06-25
BR112021011849A2 (pt) 2021-09-08
EP3899064C0 (fr) 2023-08-30
JP2022522092A (ja) 2022-04-14
CA3124189C (fr) 2023-10-31
EP3899064A1 (fr) 2021-10-27
CA3124189A1 (fr) 2020-06-25
BR112021011844A2 (pt) 2021-08-31
JP2022514920A (ja) 2022-02-16
ES2957403T3 (es) 2024-01-19

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