EP3414354A1 - Martensitic steel with delayed z-phase formation, and component - Google Patents

Martensitic steel with delayed z-phase formation, and component

Info

Publication number
EP3414354A1
EP3414354A1 EP17717169.1A EP17717169A EP3414354A1 EP 3414354 A1 EP3414354 A1 EP 3414354A1 EP 17717169 A EP17717169 A EP 17717169A EP 3414354 A1 EP3414354 A1 EP 3414354A1
Authority
EP
European Patent Office
Prior art keywords
alloy
component according
nickel
niobium
molybdenum
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP17717169.1A
Other languages
German (de)
French (fr)
Inventor
Torsten Neddemeyer
Torsten-Ulf Kern
Karsten Kolk
Axel Bublitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP3414354A1 publication Critical patent/EP3414354A1/en
Withdrawn legal-status Critical Current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
    • C22C38/54—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
    • C22C38/001—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
    • C22C38/04—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
    • C22C38/40—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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/005—Selecting particular materials
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/04—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler and characterised by material, e.g. use of special steel alloy

Definitions

  • the invention relates to a martensitic steel with delayed Z-phase formation and a component thereof.
  • forged rotor disks have hitherto been made from various forged steels.
  • a steel based on NiCrMoV for compressor disks and a steel based on CrMoWVNbN for turbine disks are used.
  • Decisive for the choice of forging material are the conditions of use and the design requirements.
  • the material with the highest operating temperature is currently a steel based on CrMoWVNbN and a steel based on CrMoCoVB. Both materials are not suitable in the 800-900MPa Fes ⁇ strength class for use above 773K, or 823K.
  • Formation of the Z phase has limited the alloying composition of martensitic steels.
  • the invention relates to an alloy
  • V Vanadium (V): 0.1% - 0.3%
  • the inventive step lies in the development and validation ⁇ tion of new Z-phasenverzögernder alloys for the primary use as a rotor disk in gas turbines.
  • Application temperature can be increased and therefore allows performance and performance increase of the machine without external cooling is necessary.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to an iron-based steel comprising at least (in wt.%): carbon (C): 0.01% - 0.10%; silicon (Si): 0.02% - 0.7%; manganese (Mn): 0.3% - 1.0%; chromium (Cr): 8.0% - 10%; molybdenum (Mo): 0.1% - 1.8%; cobalt (Co): 0.8% - 2.0%; nickel (Ni): 0.008% - 0.20%; boron (B): 0.004% - 0.01%; nitrogen (N): 0.03% - 0.06%; vanadium (V): 0.1% - 0.3%, particularly 0.15% - 0.022% of vanadium (V), more particularly 0.185% of vanadium (V); niobium (Nb): 0.01% - 0.07%; optionally tungsten (W): 2.0% - 2.8%, particularly 2.4% of tungsten; the remainder being iron (Fe); wherein said steel consists in particular of these elements.

Description

Martensitischer Stahl mit verzögerter Z-Phasenbildung und  Martensitic steel with delayed Z-phase formation and
Bauteil  component
Die Erfindung betrifft einen martensitischen Stahl mit verzögerter Z-Phasenbildung und ein Bauteil daraus. The invention relates to a martensitic steel with delayed Z-phase formation and a component thereof.
In Korrelation zur Anwendungsbedingung werden geschmiedete Rotorscheiben bisher aus verschiedenen Schmiedestählen herge- stellt. So wird ein Stahl auf der Basis NiCrMoV für Verdichterscheiben sowie ein Stahl auf der Basis CrMoWVNbN für Turbinenscheiben verwendet. Ausschlaggebend für die Wahl des Schmiedematerials sind die Anwendungsbedingungen und die Designanforderungen . In correlation to the application condition, forged rotor disks have hitherto been made from various forged steels. For example, a steel based on NiCrMoV for compressor disks and a steel based on CrMoWVNbN for turbine disks are used. Decisive for the choice of forging material are the conditions of use and the design requirements.
Für die Auswahl des Schmiedewerkstoffes gilt es immer ein Gleichgewicht aus Festigkeit und Zähigkeit zu gewährleisten, um die Designanforderungen einzuhalten. Der Werkstoff mit der höchsten Einsatztemperatur ist aktuell ein Stahl auf der Basis CrMoWVNbN sowie ein Stahl auf der Basis CrMoCoVB. Beide Werkstoffe sind in der 800-900MPa Fes¬ tigkeitsklasse für einen Einsatz oberhalb 773K bzw. 823K nicht geeignet. When selecting the forging material, it is important to always maintain a balance of strength and toughness to meet the design requirements. The material with the highest operating temperature is currently a steel based on CrMoWVNbN and a steel based on CrMoCoVB. Both materials are not suitable in the 800-900MPa Fes ¬ strength class for use above 773K, or 823K.
Für höhere Einsatztemperaturen sind aktuell Nickelwerkstoffe in Diskussion. For higher operating temperatures, nickel materials are currently under discussion.
Leider haben die Bauteile Nachteile, weshalb der Einsatz ab- zuwägen ist: Unfortunately, the components have disadvantages, which is why the use has to be weighed up:
- sehr hohe Kosten im Vergleich zur Scheibe aus Stahl,  - very high costs compared to the steel disc,
- neue Auslegungskonzepte müssen entwickelt werden,  - new design concepts have to be developed
- längere Bearbeitungszeiten in der Fertigung. Es ist daher Aufgabe der Erfindung oben genanntes Problem zu lösen . Die Aufgabe wird gelöst durch eine Legierung gemäß Anspruch 1 und ein Bauteil gemäß Anspruch 2. - longer processing times in production. It is therefore an object of the invention to solve the above-mentioned problem. The object is achieved by an alloy according to claim 1 and a component according to claim 2.
Durch die Bildung der Z-Phase wurde die Legierungszusammen- setzung martensitischer Stähle bisher begrenzt. Formation of the Z phase has limited the alloying composition of martensitic steels.
In den Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden kön¬ nen, um weitere Vorteile zu erzielen. In the dependent claims further advantageous measures are listed, which are combined with each other Kings ¬ nen to obtain further advantages.
Die Erfindung betrifft eine Legierung, The invention relates to an alloy,
die zumindest aufweist (in Gew.-%) : at least (in% by weight):
Kohlenstoff (C) : 0,01% - 0,10%,  Carbon (C): 0.01% - 0.10%,
Silizium (Si) : 0,02% - 0,7%,  Silicon (Si): 0.02% - 0.7%,
Mangan (Mn) : 0,3% - 1,0%,  Manganese (Mn): 0.3% - 1.0%,
Chrom (Cr) : 8,0% - 10%,  Chromium (Cr): 8.0% - 10%,
Molybdän (Mo): 0,1% - 1,8%,  Molybdenum (Mo): 0.1% - 1.8%,
Kobalt (Co) : 0, 8% - 2, 0%,  Cobalt (Co): 0, 8% - 2, 0%,
Nickel (Ni) : 0, 008% - 0,2%,  Nickel (Ni): 0, 008% - 0.2%,
Bor (B) : 0, 004% - 0.01%,  Boron (B): 0, 004% - 0.01%,
Stickstoff (N) : 0,03% - 0,06%,  Nitrogen (N): 0.03% - 0.06%,
Vanadium (V): 0,1% - 0,3%,  Vanadium (V): 0.1% - 0.3%,
Niob (Nb) : 0, 01% - 0,06%,  Niobium (Nb): 0, 01% - 0.06%,
optional optional
Wolfram (W) : 2,0% - 2,8%,  Tungsten (W): 2.0% - 2.8%,
Rest Eisen (Fe) , Remainder iron (Fe),
insbesondere bestehend aus diesen Elementen. in particular consisting of these elements.
1. Ausführungsbeispiel (in 1st embodiment (in
Kohlenstoff (C) : 0,03%  Carbon (C): 0.03%
Silizium (Si) : 0,36%  Silicon (Si): 0.36%
Mangan (Mn) : 0,49%  Manganese (Mn): 0.49%
Chrom (Cr) : 9, 12%  Chromium (Cr): 9, 12%
Molybdän (Mo) : 0,15%  Molybdenum (Mo): 0.15%
Wolfram (W) : 2,4%  Tungsten (W): 2.4%
Kobalt (Co) : 1,8%  Cobalt (Co): 1.8%
Nickel (Ni) : 0,01%  Nickel (Ni): 0.01%
Bor (B) : 0,006% Stickstoff (N) : 0,05% Boron (B): 0.006% Nitrogen (N): 0.05%
Vanadium (V) : 0,2%  Vanadium (V): 0.2%
Niob (Nb) : 0,05%  Niobium (Nb): 0.05%
Rest Eisen (Fe) .  Remainder iron (Fe).
2. Ausführungsbeispiel (in Gew.-% 2nd embodiment (in% by weight)
Kohlenstoff (C) : 0,08%  Carbon (C): 0.08%
Silizium (Si) : 0,05%  Silicon (Si): 0.05%
Mangan (Mn) : 0, 82%  Manganese (Mn): 0, 82%
Chrom (Cr) : 9, 32%  Chrome (Cr): 9, 32%
Molybdän (Mo) : 1,47%  Molybdenum (Mo): 1.47%
Kobalt (Co) : 0, 96%  Cobalt (Co): 0, 96%
Nickel (Ni) : 0,16%  Nickel (Ni): 0.16%
Bor (B) : 0,0085%  Boron (B): 0.0085%
Stickstoff (N) : 0,04%  Nitrogen (N): 0.04%
Vanadium (V) : 0,17%  Vanadium (V): 0.17%
Niob (Nb) : 0, 02%  Niobium (Nb): 0, 02%
Rest Eisen (Fe) .  Remainder iron (Fe).
Neben der Anwendung als Schmiedescheibe in der Gasturbine sind weitere Anwendungen denkbar. In addition to the use as a forging disc in the gas turbine other applications are conceivable.
Dazu zählen Gasturbinenverdichterschaufel , Dampfturbinen- schaufel oder Dampfturbinenschmiedeteile .  These include gas turbine compressor blades, steam turbine blades or steam turbine forgings.
Der erfinderische Schritt liegt in Entwicklung und Validie¬ rung neuer Z-phasenverzögernder Legierungen für den primären Einsatz als Rotorscheibe in Gasturbinen. The inventive step lies in the development and validation ¬ tion of new Z-phasenverzögernder alloys for the primary use as a rotor disk in gas turbines.
Die Vorteile sind: The advantages are:
Erweiterung des Einsatzbereiches preiswerter Eisenbasislegierungen im Vergleich zu teuren Nickelbasiswerk Stoffen, schnellere Bearbeitbarkeit der Rotorbauteile auf Eisen¬ basis (9% - 12%Cr) im Vergleich zu Nickelbasiswerkstof¬ fen, Erfahrungen aus der Konstruktion, Fertigung und Herstellung der hochlegierten Eisenbasislegierungen können größtenteils übernommen werden. Das hilft z.B. bei allen probabilistischen Ansätzen (z.B. Bruchmechanik => minimiertes Risiko) , Extension of the application area cheaper iron-based alloys compared to expensive nickel-based materials, faster workability of the rotor components on iron ¬ base (9% - 12% Cr) compared to Nickelbasiswerkstof ¬ fen, Experience in the design, manufacture and manufacture of high-alloy iron-based alloys can largely be assumed. This helps eg with all probabilistic approaches (eg fracture mechanics => minimized risk),
Anwendungstemperatur kann erhöht werden und ermöglicht daher Leistungs- und Performancesteigerung der Maschine ohne dass externe Kühlung notwendig ist. Application temperature can be increased and therefore allows performance and performance increase of the machine without external cooling is necessary.

Claims

Patentansprüche claims
Eisenbasierte Legierung, Iron-based alloy,
zumindest aufweisend (in Gew.  at least having (in wt.
Kohlenstoff (C) : 0,01% - 0,10%,  Carbon (C): 0.01% - 0.10%,
Silizium (Si) : 0, 02% - 0,7%,  Silicon (Si): 0, 02% - 0.7%,
Mangan (Mn) : 0,3% - 1,0%,  Manganese (Mn): 0.3% - 1.0%,
Chrom (Cr) : 8,0% - 10%,  Chromium (Cr): 8.0% - 10%,
Molybdän (Mo) : 0,1% - 1,8%,  Molybdenum (Mo): 0.1% - 1.8%,
Kobalt (Co) : 0,8% - 2,0%,  Cobalt (Co): 0.8% - 2.0%,
Nickel (Ni) : 0,008% - 0,20%,  Nickel (Ni): 0.008% - 0.20%,
Bor (B) : 0,004% - 0,01%,  Boron (B): 0.004% - 0.01%,
Stickstoff (N) : 0,03% - 0,06%,  Nitrogen (N): 0.03% - 0.06%,
Vanadium (V) : 0,1% - 0,3%,  Vanadium (V): 0.1% - 0.3%,
insbesondere 0,15% - 0,022% Vanadium  in particular 0.15% - 0.022% vanadium
ganz insbesondere enthaltend 0,185% Vanadium (\  most especially containing 0.185% vanadium (\
Niob (Nb) : 0, 01% - 0, 07%,  Niobium (Nb): 0, 01% - 0, 07%,
optional  optional
Wolfram (W) : 2,0% - 2,8%, insbesondere 2,4  Tungsten (W): 2.0% - 2.8%, especially 2.4
Rest Eisen (Fe) ,  Remainder iron (Fe),
insbesondere bestehend aus diesen Elementen.  in particular consisting of these elements.
Bauteil oder Pulver, Component or powder,
zumindest aufweisend eine Legierung gemäß Anspruch  at least comprising an alloy according to claim
3. Legierung oder Bauteil nach Anspruch 1 oder 2, 3. Alloy or component according to claim 1 or 2,
bestehend aus Eisen (Fe) , Kohlenstoff (C) , Silizium (Si) , Mangan (Mn) , Chrom (Cr) , Molybdän (Mo) , Kobalt (Co) , Nickel (Ni), Bor (B) , Stickstoff (N) , Vanadium (V), Niob (Nb) und optional Wolfram (W) . consisting of iron (Fe), carbon (C), silicon (Si), manganese (Mn), chromium (Cr), molybdenum (Mo), cobalt (Co), nickel (Ni), boron (B), nitrogen (N ), Vanadium (V), niobium (Nb) and optionally tungsten (W).
4. Legierung oder Bauteil nach einem oder mehreren der Ansprüche 1, 2 oder 3, 4. Alloy or component according to one or more of claims 1, 2 or 3,
nicht enthaltend Kupfer (Cu) .  not containing copper (Cu).
5. Legierung oder Bauteil nach einem oder mehreren der Ansprüche 1, 2, 3 oder 4, 5. An alloy or component according to one or more of claims 1, 2, 3 or 4,
nicht enthaltend Titan (Ti) .  not containing titanium (Ti).
6. Legierung oder Bauteil nach einem oder mehreren der Ansprüche 1, 2, 3, 4 oder 5, 6. An alloy or component according to one or more of claims 1, 2, 3, 4 or 5,
nicht enthaltend Aluminium (AI) .  not containing aluminum (AI).
7. Legierung oder Bauteil nach einem oder mehreren der Ansprüche 1, 2, 3, 4, 5 oder 6, 7. An alloy or component according to one or more of claims 1, 2, 3, 4, 5 or 6,
enthaltend Wolfram (W) .  containing tungsten (W).
8. Legierung oder Bauteil nach Anspruch 1, 2, 3, 4, 5, 6 oder 7, 8. An alloy or component according to claim 1, 2, 3, 4, 5, 6 or 7,
enthaltend  containing
0,01% - 0,05% Kohlenstoff (C) ,  0.01% - 0.05% carbon (C),
insbesondere 0,03 % Kohlenstoff (C) .  in particular 0.03% carbon (C).
9. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche, 9. An alloy or component according to one or more of the preceding claims,
enthaltend 0,3% - 0,4% Silizium (Si) ,  containing 0.3% - 0.4% silicon (Si),
insbesondere 0,35% Silizium (Si) .  in particular 0.35% silicon (Si).
10. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche, 10. Alloy or component according to one or more of the preceding claims,
enthaltend 0,4% - 0,6% Mangan (Mn) ,  containing 0.4% - 0.6% manganese (Mn),
insbesondere 0,50% Mangan (Mn) . i in particular 0.50% manganese (Mn). i
WO 2017/178555 PCT/EP2017/058861  WO 2017/178555 PCT / EP2017 / 058861
7  7
11. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche, 11. An alloy or component according to one or more of the preceding claims,
enthaltend 8,6% - 9,6% Chrom (Cr),  containing 8.6% - 9.6% chromium (Cr),
insbesondere 9, 1% Chrom (Cr) .  especially 9, 1% chromium (Cr).
12. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche, 12. Alloy or component according to one or more of the preceding claims,
enthaltend 0,1% - 0,2% Molybdän (Mo),  containing 0.1% - 0.2% molybdenum (Mo),
insbesondere 0,15 Molybdän (Mo) .  in particular 0.15 molybdenum (Mo).
13. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche, 13. Alloy or component according to one or more of the preceding claims,
enthaltend 1,6% - 2,0% Kobalt (Co),  containing 1.6% - 2.0% cobalt (Co),
insbesondere 1,8% Kobalt (Co).  especially 1.8% cobalt (Co).
14. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche, 14. Alloy or component according to one or more of the preceding claims,
enthaltend 0,005% - 0,015% Nickel (Ni) ,  containing 0.005% - 0.015% nickel (Ni),
insbesondere 0,01% Nickel (Ni) .  in particular 0.01% nickel (Ni).
15. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche, 15. An alloy or component according to one or more of the preceding claims,
enthaltend 0,004% - 0,008% Bor (B) ,  containing 0.004% - 0.008% boron (B),
insbesondere 0,006% Bor (B) .  in particular 0.006% boron (B).
16. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche, 16. Alloy or component according to one or more of the preceding claims,
enthaltend 0,03% - 0,07% Niob (Nb) ,  containing 0.03% - 0.07% niobium (Nb),
insbesondere 0,05% Niob (Nb) . i in particular 0.05% niobium (Nb). i
WO 2017/178555 PCT/EP2017/058861  WO 2017/178555 PCT / EP2017 / 058861
8  8th
17. Legierung oder Bauteil nach einem oder mehreren der Ansprüche 1, 2, 3, 4, 5 oder 6, 17. Alloy or component according to one or more of claims 1, 2, 3, 4, 5 or 6,
enthaltend  containing
0,06% - 0,1% Kohlenstoff,  0.06% - 0.1% carbon,
insbesondere 0,08% Kohlenstoff.  especially 0.08% carbon.
18. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche 1 bis 6 oder 17, 18. Alloy or component according to one or more of the preceding claims 1 to 6 or 17,
enthaltend 0,04% - 0,06% Silizium (Si) ,  containing 0.04% - 0.06% silicon (Si),
insbesondere 0,05% Silizium (Si) .  in particular 0.05% silicon (Si).
19. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche 1 bis 6 oder 17, 18, 19. Alloy or component according to one or more of the preceding claims 1 to 6 or 17, 18,
enthaltend 0,7% - 0,9% Mangan (Mn) ,  containing 0.7% - 0.9% manganese (Mn),
insbesondere 0,8% Mangan (Mn) .  in particular 0.8% manganese (Mn).
20. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche 1 bis 6 oder 17 bis 19, 20. An alloy or component according to one or more of the preceding claims 1 to 6 or 17 to 19,
enthaltend 1,4% - 1,6% Molybdän (Mo),  containing 1.4% - 1.6% molybdenum (Mo),
insbesondere 1,50% Molybdän (Mo).  especially 1.50% molybdenum (Mo).
21. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche 1 bis 6 oder 17 bis 20, 21. Alloy or component according to one or more of the preceding claims 1 to 6 or 17 to 20,
enthaltend 0,85% - 1,1% Kobalt (Co),  containing 0.85% -1.1% cobalt (Co),
insbesondere 0,95% Kobalt (Co).  especially 0.95% cobalt (Co).
22. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche 1 bis 6 oder 17 bis 21, 22. Alloy or component according to one or more of the preceding claims 1 to 6 or 17 to 21,
enthaltend 0,1% - 0,2% Nickel (Ni) ,  containing 0.1% - 0.2% nickel (Ni),
insbesondere 0,15% Nickel (Ni) . in particular 0.15% nickel (Ni).
23. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche 1 bis 6 oder 17 bis 22, 23. Alloy or component according to one or more of the preceding claims 1 to 6 or 17 to 22,
enthaltend 0,007% - 0,01% Bor (B) ,  containing 0.007% - 0.01% boron (B),
insbesondere enthaltend 0,0085% Bor (B) .  in particular containing 0.0085% boron (B).
24. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche 1 bis 6 oder 17 bis 23, 24. Alloy or component according to one or more of the preceding claims 1 to 6 or 17 to 23,
enthaltend 0,015% - 0,025% Niob (Nb) ,  containing 0.015% - 0.025% niobium (Nb),
insbesondere enthaltend 0,02% Niob (Nb) .  in particular containing 0.02% niobium (Nb).
25. Legierung oder Bauteil nach einem oder mehreren der vorherigen Ansprüche 1 bis 6 oder 17 bis 24, 25. Alloy or component according to one or more of the preceding claims 1 to 6 or 17 to 24,
nicht enthaltend Wolfram (W) .  not containing tungsten (W).
EP17717169.1A 2016-04-15 2017-04-12 Martensitic steel with delayed z-phase formation, and component Withdrawn EP3414354A1 (en)

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DE102016206370.7A DE102016206370A1 (en) 2016-04-15 2016-04-15 Martensitic steel with delayed Z-phase formation and component
PCT/EP2017/058861 WO2017178555A1 (en) 2016-04-15 2017-04-12 Martensitic steel with delayed z-phase formation, and component

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EP (1) EP3414354A1 (en)
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WO (1) WO2017178555A1 (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH369481A (en) * 1956-01-11 1963-05-31 Birmingham Small Arms Co Ltd Process for increasing the creep resistance of chrome steel
JPH07286247A (en) * 1994-04-18 1995-10-31 Nippon Steel Corp High strength ferritic heat resistant steel
DE19628506A1 (en) * 1996-07-15 1998-01-22 Siemens Ag Turbine shaft for steam turbines
JPH1161342A (en) * 1997-08-08 1999-03-05 Mitsubishi Heavy Ind Ltd High chromium ferritic steel
JP4900639B2 (en) * 2005-02-28 2012-03-21 独立行政法人物質・材料研究機構 Ferritic heat resistant steel having tempered martensite structure and method for producing the same
JP4386364B2 (en) * 2005-07-07 2009-12-16 株式会社日立製作所 Steam turbine piping, its manufacturing method, main steam piping and reheat piping for steam turbine and steam turbine power plant using the same
JP5283908B2 (en) * 2006-02-06 2013-09-04 バブコック日立株式会社 Heat resistant steel
CN101668872B (en) * 2007-03-05 2012-01-11 丹麦科技大学 Martensitic creep resistant steel strengthened by z-phase
JP5097017B2 (en) * 2008-06-03 2012-12-12 住友金属工業株式会社 Manufacturing method of high Cr ferritic heat resistant steel
JP2009074179A (en) * 2008-11-14 2009-04-09 Babcock Hitachi Kk HIGH Cr FERRITIC HEAT RESISTANT STEEL
JP5137934B2 (en) * 2009-12-04 2013-02-06 バブコック日立株式会社 Ferritic heat resistant steel

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US20190169721A1 (en) 2019-06-06
DE102016206370A1 (en) 2017-10-19

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