EP3684957B1 - Martensitic steel with z-phase, powder and component made thereof - Google Patents

Martensitic steel with z-phase, powder and component made thereof Download PDF

Info

Publication number
EP3684957B1
EP3684957B1 EP18759887.5A EP18759887A EP3684957B1 EP 3684957 B1 EP3684957 B1 EP 3684957B1 EP 18759887 A EP18759887 A EP 18759887A EP 3684957 B1 EP3684957 B1 EP 3684957B1
Authority
EP
European Patent Office
Prior art keywords
alloy
weight
component according
phase
powder
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.)
Active
Application number
EP18759887.5A
Other languages
German (de)
French (fr)
Other versions
EP3684957A1 (en
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 Energy Global GmbH and Co KG
Original Assignee
Siemens Energy Global GmbH and Co KG
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 Energy Global GmbH and Co KG filed Critical Siemens Energy Global GmbH and Co KG
Publication of EP3684957A1 publication Critical patent/EP3684957A1/en
Application granted granted Critical
Publication of EP3684957B1 publication Critical patent/EP3684957B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • C22C38/42—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
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/009—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine components other than turbine blades
    • 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
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • 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
    • C22C38/02—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
    • C22C38/06—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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/22—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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/44—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
    • C22C38/50—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
    • C22C38/52—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
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/17—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by forging
    • 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
    • C21D2211/004—Dispersions; Precipitations
    • 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
    • C21D2211/008—Martensite

Definitions

  • the invention relates to a martensitic steel with a Z phase and a component thereof.
  • forged rotor disks In correlation with the application conditions, forged rotor disks have so far been made from different forged steels.
  • a steel based on NiCrMoV is used for compressor disks and a steel based on CrMoWVNbN is used for the turbine disks.
  • the application conditions and design requirements are decisive for the choice of forging material.
  • 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 for use above 773K or 823K in the 800-900MPa strength class.
  • Nickel materials are currently being discussed for higher operating temperatures. Nevertheless, current research suggests that iron alloys can be used up to 873K.
  • the alloy according to the invention has at least in% by weight: Carbon (C): 0.15% - 0.25%, preferably 0.19% - 0.21%, Silicon (Si): 0.0% - 0.08%, preferably 0.0% - 0.06%, Manganese (Mn): 0.03% - 0.20%, preferably 0.05% - 0.15%, Chromium (Cr): 9.5% - 10.5%, preferably 9.8% - 10.2%, Molybdenum (Mo): 0.4% - 1.0%, preferably 0.6% - 0.8%, Tungsten (W): 1.6% - 2.4%, preferably 1.9% - 2.1%, Cobalt (Co): 2.5% - 3.5%, preferably 2.8% - 3.2%, Nickel (Ni): 0.0% - 0.40%, preferably 0.0% - 0.20%, Boron (B): 0.003% - 0.02%, preferably 0.006% - 0.01%, Nitrogen (N): 0.0% - 0.40%, preferably 0.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Description

Die Erfindung betrifft einen martensitischen Stahl mit Z-Phase und ein Bauteil daraus.The invention relates to a martensitic steel with a Z phase and a component thereof.

In Korrelation zu Anwendungsbedingungen werden geschmiedete Rotorscheiben bisher aus verschiedenen Schmiedestählen hergestellt. So wird ein Stahl auf der Basis NiCrMoV für Verdichterscheiben sowie ein Stahl auf der Basis CrMoWVNbN für die Turbinenscheiben verwendet. Ausschlaggebend für die Wahl des Schmiedematerials sind die Anwendungsbedingungen und die Designanforderungen.In correlation with the application conditions, forged rotor disks have so far been made from different forged steels. A steel based on NiCrMoV is used for compressor disks and a steel based on CrMoWVNbN is used for the turbine disks. The application conditions and design requirements are decisive for the choice of forging material.

Für die Auswahl des Schmiedewerkstoffes gilt es immer ein Gleichgewicht aus Festigkeit und Zähigkeit zu gewährleiten, um die Designanforderungen einzuhalten.When selecting the forging material, it is always important to ensure a balance of strength and toughness in order to meet the design requirements.

Die Veröffentlichung, H. K. Danielsen und J. Hald (2006), Behaviour of Z phase in 9-12 % Steels, Eneregy Materials, 1:1, Seiten 49-57 , untersucht das Verhaltens von 9-12%igen Cr-Stählen, um die Faktoren der Zusammensetzung und des Mikrogefüges zu klären, die die Ausscheidung der Z-Phase in diesen Legierungen steuern.The publication, HK Danielsen and J. Hald (2006), Behavior of Z phase in 9-12% Steels, Energy Materials, 1:1, pages 49-57 , investigates the behavior of 9-12% Cr steels to clarify the compositional and microstructure factors that control Z-phase precipitation in these alloys.

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 Festigkeitsklasse für einen Einsatz oberhalb 773K bzw. 823K nicht geeignet.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 for use above 773K or 823K in the 800-900MPa strength class.

Für höhere Einsatztemperaturen sind aktuell Nickelwerkstoffe in Diskussion. Nichtsdestotrotz deuten aktuelle Untersuchungen darauf hin, dass Eisenlegierungen bis 873K genutzt werden können.Nickel materials are currently being discussed for higher operating temperatures. Nevertheless, current research suggests that iron alloys can be used up to 873K.

Leider haben die Bauteile folgende Nachteile, weshalb der Einsatz abzuwägen ist:

  • sehr hohe Kosten im Vergleich zur Scheibe aus Stahl,
  • neue Bruchmechanikkonzepte müssen entwickelt werden,
  • längere Bearbeitungszeiten in der Fertigung.
Unfortunately, the components have the following disadvantages, which is why their use must be considered:
  • very high costs compared to the steel disc,
  • new fracture mechanics concepts must be developed,
  • longer processing times in production.

Es ist daher Aufgabe der Erfindung oben genanntes Problem zu lösen.It is therefore the object of the invention to solve the above-mentioned problem.

Die Aufgabe wird gelöst durch eine Legierung gemäß Anspruch 1 und ein Bauteil Anspruch 2.The problem is solved by an alloy according to claim 1 and a component according to claim 2.

In den Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden können, um weitere Vorteile zu erzielen.The subclaims list further advantageous measures that can be combined with one another in any way to achieve further advantages.

Durch die Bildung der Z-Phase innerhalb des Nutzungszeitraums des Bauteils wurde die Legierungszusammensetzung martensitischer Stähle bisher begrenzt.Due to the formation of the Z phase within the service life of the component, the alloy composition of martensitic steels has so far been limited.

Die erfindungsgemäße Legierung weist zumindest auf in Gew-%: Kohlenstoff (C): 0,15% - 0,25%, vorzugsweise 0,19% - 0,21%, Silizium (Si): 0,0% - 0,08%, vorzugsweise 0,0% - 0,06%, Mangan (Mn): 0,03% - 0,20%, vorzugsweise 0,05% - 0,15%, Chrom (Cr): 9,5% - 10,5%, vorzugsweise 9,8% - 10,2%, Molybdän (Mo): 0,4% - 1,0%, vorzugsweise 0,6% - 0,8%, Wolfram (W): 1,6% - 2,4%, vorzugsweise 1,9% - 2,1%, Kobalt (Co): 2,5% - 3,5%, vorzugsweise 2,8% - 3,2%, Nickel (Ni): 0,0% - 0,40%, vorzugsweise 0,0% - 0,20%, Bor (B): 0,003% - 0,02%, vorzugsweise 0,006% - 0,01%, Stickstoff (N): 0,0% - 0,40%, vorzugsweise 0,0% - 0,20%, Titan (Ti): 0,02% - 0,10%, vorzugsweise 0,04% - 0,08%, Vanadium (V): 0,10% - 0,30%, vorzugsweise 0,15% - 0,25%, Niob (Nb): 0,02% - 0,08%, vorzugsweise 0,04% - 0,06%, Kupfer (Cu): 1,20% - 2,10%, vorzugsweise 1,65% - 1,85%, Aluminium (Al): 0,003% - 0,06%, insbesondere 0,005% - 0,04%, Rest Eisen (Fe). The alloy according to the invention has at least in% by weight: Carbon (C): 0.15% - 0.25%, preferably 0.19% - 0.21%, Silicon (Si): 0.0% - 0.08%, preferably 0.0% - 0.06%, Manganese (Mn): 0.03% - 0.20%, preferably 0.05% - 0.15%, Chromium (Cr): 9.5% - 10.5%, preferably 9.8% - 10.2%, Molybdenum (Mo): 0.4% - 1.0%, preferably 0.6% - 0.8%, Tungsten (W): 1.6% - 2.4%, preferably 1.9% - 2.1%, Cobalt (Co): 2.5% - 3.5%, preferably 2.8% - 3.2%, Nickel (Ni): 0.0% - 0.40%, preferably 0.0% - 0.20%, Boron (B): 0.003% - 0.02%, preferably 0.006% - 0.01%, Nitrogen (N): 0.0% - 0.40%, preferably 0.0% - 0.20%, Titanium (Ti): 0.02% - 0.10%, preferably 0.04% - 0.08%, Vanadium (V): 0.10% - 0.30%, preferably 0.15% - 0.25%, Niobium (Nb): 0.02% - 0.08%, preferably 0.04% - 0.06%, Copper (Cu): 1.20% - 2.10%, preferably 1.65% - 1.85%, Aluminum (Al): 0.003% - 0.06%, especially 0.005% - 0.04%, Rest iron (Fe).

Durch neue Konzepte kann die Grenze verschoben werden:

  1. a) Verschiebung der Bildung der Z-Phase in Richtung 200.000h,
  2. b) Bildung der Z-Phase vor Beginn des Nutzungszeitraums des späteren GT-Schmiedebauteils.
The boundaries can be pushed through new concepts:
  1. a) Shift in the formation of the Z phase towards 200,000h,
  2. b) Formation of the Z phase before the start of the useful life of the later GT forged component.

In Folge dessen ändern sich die mechanischen Eigenschaften über den Nutzungszeitraum durch die Ausbildung der Z-Phase nicht mehr. Stattdessen sind die Kennwerte durch die Ausbildung der Z-Phase sehr viel konstanter. Eine Auslegung der Bauteile ist möglich.As a result, the mechanical properties no longer change over the period of use due to the formation of the Z phase. Instead, the characteristic values are much more constant due to the formation of the Z phase. A design of the components is possible.

Ein vorteilhaftes Ausführungsbeispiel lautet in Gew.-%:

  • Kohlenstoff (C): 0,20%,
  • Silizium (Si): 0,06%,
  • Mangan (Mn): 0,10%,
  • Chrom (Cr): 10%,
  • Molybdän (Mo): 0,7%,
  • Wolfram (W): 2,0%,
  • Kobalt (Co): 3,0%,
  • Nickel (Ni): 0,0%,
  • Bor (B): 0,010%,
  • Stickstoff (N): 0,0%,
  • Titan (Ti): 0,05%,
  • Vanadium (V): 0,20%,
  • Niob (Nb): 0,05%,
  • Kupfer (Cu): 1,75%,
  • Aluminium (Al): 0,02%,
  • Rest Eisen (Fe).
An advantageous exemplary embodiment reads in% by weight:
  • Carbon (C): 0.20%,
  • Silicon (Si): 0.06%,
  • Manganese (Mn): 0.10%,
  • Chromium (Cr): 10%,
  • Molybdenum (Mo): 0.7%,
  • Tungsten (W): 2.0%,
  • Cobalt (Co): 3.0%,
  • Nickel (Ni): 0.0%,
  • Boron (B): 0.010%,
  • Nitrogen (N): 0.0%,
  • Titanium (Ti): 0.05%,
  • Vanadium (V): 0.20%,
  • Niobium (Nb): 0.05%,
  • Copper (Cu): 1.75%,
  • Aluminum (Al): 0.02%,
  • Rest iron (Fe).

Neben der Anwendung als Schmiedescheibe in der Gasturbine sind weitere Anwendungen denkbar, wie z.B. Gasturbinenverdichterschaufeln, Dampfturbinenschaufel oder als Dampfturbinenschmiedeteil.In addition to the use as a forged disk in the gas turbine, other applications are conceivable, such as gas turbine compressor blades, steam turbine blades or as a steam turbine forging.

Die Vorteile sind:

  • Erweiterung des Einsatzbereiches "preiswerter" Eisenbasislegierungen im Vergleich zu "teuren Nickelbasiswerkstoffen",
  • schnellere Bearbeitbarkeit der Rotorbauteile auf Eisenbasis (9% - 11% Cr) im Vergleich zu Nickelbasiswerkstoffen,
  • 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),
  • Anwendungstemperatur kann erhöht werden und ermöglicht daher Leistungs- und Performancesteigerung der Maschine, ohne dass externe Kühlung notwendig ist.
The advantages are:
  • Expansion of the area of application of "inexpensive" iron-based alloys in comparison to "expensive nickel-based materials",
  • faster machinability of iron-based rotor components (9% - 11% Cr) compared to nickel-based materials,
  • Experience from the design, manufacture and production of high-alloy iron-based alloys can largely be adopted; This helps, for example, with all probabilistic approaches (e.g. fracture mechanics => minimized risk),
  • Application temperature can be increased and therefore enables increased performance and performance of the machine without the need for external cooling.

Claims (17)

  1. Alloy
    comprising in % by weight: carbon (C): 0.15% - 0.25%, silicon (Si): 0.0% - 0.08%, manganese (Mn): 0.03% - 0.20%, chromium (Cr): 9.50 - 10.5%, molybdenum (Mo): 0.4% - 1.0%, tungsten (W): 1.6% - 2.4%, cobalt (Co): 2.5% - 3.5%, nickel (Ni): 0.0% - 0.40%, boron (B): 0.003% - 0.02%, nitrogen (N): 0.0% - 0.40%, titanium (Ti): 0.02% - 0.10%, vanadium (V): 0.10% - 0.30%, niobium (Nb): 0.02% - 0.08%, copper (Cu): 1.20% - 2.10%, aluminium (Al): 0.003% - 0.06%,
    balance iron (Fe).
  2. Component
    comprising an alloy according to Claim 1.
  3. Alloy or component according to one or both of Claims 1 and 2
    containing 0.2% by weight of carbon (C).
  4. Alloy or component according to one or more of the preceding claims
    containing 0.06% by weight of silicon (Si).
  5. Alloy or component according to one or more of the preceding claims
    containing 0.1% by weight of manganese (Mn).
  6. Alloy or component according to one or more of the preceding claims
    containing 10.00% by weight of chromium (Cr).
  7. Alloy or component according to one or more of the preceding claims
    containing 0.7% by weight of molybdenum (Mo).
  8. Alloy or component according to one or more of the preceding claims
    containing 2.0% by weight of tungsten (W).
  9. Alloy or component according to one or more of the preceding claims
    containing 3.0% by weight of cobalt (Co).
  10. Alloy or component according to one or more of the preceding claims
    containing 0.0% by weight of nickel (Ni) except for contamination level.
  11. Alloy or component according to one or more of the preceding claims
    containing 0.010% by weight of boron (B).
  12. Alloy or component according to one or more of the preceding claims
    containing 0.0% by weight of nitrogen (N) except for contamination level.
  13. Alloy or component according to one or more of the preceding claims
    containing 0.05% by weight of titanium (Ti).
  14. Alloy or component according to one or more of the preceding claims
    containing 0.20% by weight of vanadium (V).
  15. Alloy or component according to one or more of the preceding claims
    containing 0.05% by weight of niobium (Nb).
  16. Alloy or component according to one or more of the preceding claims
    containing 1.75% by weight of copper (Cu).
  17. Alloy or component according to one or more of the preceding claims
    containing 0.02% by weight of aluminium (Al).
EP18759887.5A 2017-09-18 2018-08-16 Martensitic steel with z-phase, powder and component made thereof Active EP3684957B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017216461.1A DE102017216461A1 (en) 2017-09-18 2017-09-18 Martensitic steel with Z-phase, powder and component
PCT/EP2018/072190 WO2019052766A1 (en) 2017-09-18 2018-08-16 Martensitic steel having a z-phase, powder and component

Publications (2)

Publication Number Publication Date
EP3684957A1 EP3684957A1 (en) 2020-07-29
EP3684957B1 true EP3684957B1 (en) 2023-10-04

Family

ID=63405181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18759887.5A Active EP3684957B1 (en) 2017-09-18 2018-08-16 Martensitic steel with z-phase, powder and component made thereof

Country Status (5)

Country Link
US (1) US11492686B2 (en)
EP (1) EP3684957B1 (en)
CN (1) CN111133120A (en)
DE (1) DE102017216461A1 (en)
WO (1) WO2019052766A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456785A1 (en) * 1979-05-17 1980-12-12 Daido Steel Co Ltd DECOLLETING STEEL CONTAINING DETERMINED INCLUSIONS AND A PROCESS FOR THE PREPARATION THEREOF
JP3508667B2 (en) * 2000-01-13 2004-03-22 住友金属工業株式会社 High Cr ferritic heat resistant steel excellent in high temperature strength and method for producing the same
JP2001279391A (en) * 2000-03-30 2001-10-10 Sumitomo Metal Ind Ltd Ferritic heat resisting steel
EP2055797A4 (en) * 2006-08-23 2014-12-17 Japan Science & Tech Agency Iron-based alloy and process for producing the same
JP4995122B2 (en) * 2007-03-02 2012-08-08 新日本製鐵株式会社 Ferritic heat-resistant steel and heat-resistant structure with excellent creep characteristics in weld heat-affected zone
DE102007025758A1 (en) * 2007-06-01 2008-12-04 Mahle International Gmbh seal
JP5046398B2 (en) * 2008-12-17 2012-10-10 株式会社日本製鋼所 High nitrogen martensitic stainless steel
JP5574953B2 (en) * 2010-12-28 2014-08-20 株式会社東芝 Heat-resistant steel for forging, method for producing heat-resistant steel for forging, forged parts, and method for producing forged parts

Also Published As

Publication number Publication date
DE102017216461A1 (en) 2019-03-21
CN111133120A (en) 2020-05-08
EP3684957A1 (en) 2020-07-29
US11492686B2 (en) 2022-11-08
US20200208245A1 (en) 2020-07-02
WO2019052766A1 (en) 2019-03-21

Similar Documents

Publication Publication Date Title
KR101521071B1 (en) Precipitation hardening type martensitic steel and process for producing same
DE112009002015B4 (en) Turbocharger and blade bearing ring for this
WO2013131811A1 (en) Heat-resistant bearing material made of an austenitic iron matrix alloy
EP1696108A1 (en) Heat resistant alloy for exhaust valves durable at 900°C and exhaust valves made for the alloy
KR20090035745A (en) High chrome ferrite type heat resisting steel for forging
DE112012001661T5 (en) Austenitic iron-based alloy, turbocharger and component thereof
AT408665B (en) NICKEL BASE ALLOY FOR HIGH TEMPERATURE TECHNOLOGY
WO2007097939A2 (en) Stainless steel weld overlays with enhanced wear resistance
WO2010133244A1 (en) Ferritic martensitic iron-based alloy, a component and a process
CN101668872B (en) Martensitic creep resistant steel strengthened by z-phase
EP3684957B1 (en) Martensitic steel with z-phase, powder and component made thereof
EP1704304A1 (en) Blade mounting ring for a turbocharger on an internal combustion engine
GB2423090A (en) Low pressure steam turbine blade
JPH06306550A (en) Heat resistant steel and heat treatment therefor
EP3443135A1 (en) Martensitic steel having a z-phase, powder and component
DE102020213394A1 (en) Z-phase martensitic steel, powder and blank or part
JP2014208869A (en) Precipitation-strengthened martensitic steel
WO2017178555A1 (en) Martensitic steel with delayed z-phase formation, and component
WO2020105496A1 (en) Austenitic steel sintered material, austenitic steel powder and turbine member
EP4208579A1 (en) Alloy, raw workpiece, component consisting of austenite, and method for heat-treating an austenite
WO1997039158A1 (en) Martensitic-austentitic steel
US3360363A (en) Beryllium strengthened iron base alloy
CA1208043A (en) Nickel/iron casting alloy exhibiting high strength at elevated temperatures and high microstructural stability
DE102021211652A1 (en) Austenitic alloy, blank and part and process
DD231225A3 (en) USE OF A WARM-FORMABLE ESTABLISHABLE NICKEL ALLOY FOR HOT-BRAKE-RESISTANT HOT-WORKING TOOLS

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200220

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS ENERGY GLOBAL GMBH & CO. KG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20230302

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: B22F 3/17 20060101ALN20230330BHEP

Ipc: C22C 33/02 20060101ALI20230330BHEP

Ipc: B22F 5/00 20060101ALI20230330BHEP

Ipc: C22C 38/54 20060101ALI20230330BHEP

Ipc: C22C 38/52 20060101ALI20230330BHEP

Ipc: C22C 38/50 20060101ALI20230330BHEP

Ipc: C22C 38/48 20060101ALI20230330BHEP

Ipc: C22C 38/46 20060101ALI20230330BHEP

Ipc: C22C 38/44 20060101ALI20230330BHEP

Ipc: C22C 38/42 20060101ALI20230330BHEP

Ipc: C22C 38/32 20060101ALI20230330BHEP

Ipc: C22C 38/30 20060101ALI20230330BHEP

Ipc: C22C 38/28 20060101ALI20230330BHEP

Ipc: C22C 38/26 20060101ALI20230330BHEP

Ipc: C22C 38/24 20060101ALI20230330BHEP

Ipc: C22C 38/22 20060101ALI20230330BHEP

Ipc: C22C 38/20 20060101ALI20230330BHEP

Ipc: C22C 38/06 20060101ALI20230330BHEP

Ipc: C22C 38/04 20060101ALI20230330BHEP

Ipc: C22C 38/02 20060101ALI20230330BHEP

Ipc: C22C 38/00 20060101AFI20230330BHEP

INTG Intention to grant announced

Effective date: 20230503

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502018013392

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20231004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240204

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240105

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240104

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240104

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004