CA2718576C - Procede de realisation d'un acier inoxydable durcissable par precipitation, resistant a la fatigue, a rigidite et a resistance elevees - Google Patents

Procede de realisation d'un acier inoxydable durcissable par precipitation, resistant a la fatigue, a rigidite et a resistance elevees Download PDF

Info

Publication number
CA2718576C
CA2718576C CA2718576A CA2718576A CA2718576C CA 2718576 C CA2718576 C CA 2718576C CA 2718576 A CA2718576 A CA 2718576A CA 2718576 A CA2718576 A CA 2718576A CA 2718576 C CA2718576 C CA 2718576C
Authority
CA
Canada
Prior art keywords
alloy
max
calcium
based inclusions
melting
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.)
Expired - Fee Related
Application number
CA2718576A
Other languages
English (en)
Other versions
CA2718576A1 (fr
Inventor
Robert Wayne Krieble
William Joseph Martin
Thomas Constantine Zogas
David Elmer Wert
Paul Michael Novotny
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.)
CRS Holdings LLC
Original Assignee
CRS Holdings LLC
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=40637897&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2718576(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by CRS Holdings LLC filed Critical CRS Holdings LLC
Publication of CA2718576A1 publication Critical patent/CA2718576A1/fr
Application granted granted Critical
Publication of CA2718576C publication Critical patent/CA2718576C/fr
Expired - Fee Related 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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum
    • 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
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/005—Manufacture of stainless steel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Steel (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Powder Metallurgy (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Linvention concerne un procédé de réalisation dun alliage en acier inoxydable durcissable par précipitation. Le procédé comprend létape consistant à faire fondre un alliage en acier martensitique ayant la composition suivante en pourcentage en poids : environ 0,03 max. de carbone, 1,0 max de manganèse, 0,75 max. de silicium, 0,040 max de phosphore, 0,020 max de soufre, 10-13 de chrome, 10,5-11,6 de nickel, 1,5-1,8 de titane, 0,25-1,5 de molybdène, 0,95 max de cuivre, 0,25 max de cuivre, 0,25 max daluminium, 0,3 max de niobium, 0,010 max de bore, 0,030 max dazote, le reste étant constitué de fer et dimpuretés habituelles. Le procédé comprend également létape consistant à ajouter du calcium à lalliage pendant quil est fondu. Le calcium se combine au soufre et à loxygène disponibles pour former des inclusions à base de calcium choisies dans le groupe constitué de sulfures de calcium, doxydes de calcium, doxysulfures de calcium, et de combinaisons de ceux-ci. Dans une autre étape, lalliage est traité pour éliminer au moins une partie des inclusions de la base de calcium. Lalliage est ensuite solidifié. Du fait de ce procédé, lalliage a une matrice contenant une dispersion éparse desdites inclusions à base de calcium et sensiblement aucune inclusion à base de terre rare.
CA2718576A 2008-02-29 2009-02-27 Procede de realisation d'un acier inoxydable durcissable par precipitation, resistant a la fatigue, a rigidite et a resistance elevees Expired - Fee Related CA2718576C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US3259808P 2008-02-29 2008-02-29
US61/032,598 2008-02-29
PCT/US2009/035548 WO2009108892A1 (fr) 2008-02-29 2009-02-27 Procédé de réalisation d’un acier inoxydable durcissable par précipitation, résistant à la fatigue, à rigidité et à résistance élevées

Publications (2)

Publication Number Publication Date
CA2718576A1 CA2718576A1 (fr) 2009-09-03
CA2718576C true CA2718576C (fr) 2013-02-12

Family

ID=40637897

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2718576A Expired - Fee Related CA2718576C (fr) 2008-02-29 2009-02-27 Procede de realisation d'un acier inoxydable durcissable par precipitation, resistant a la fatigue, a rigidite et a resistance elevees

Country Status (9)

Country Link
US (2) US20090283182A1 (fr)
EP (1) EP2247761B1 (fr)
KR (1) KR20100135242A (fr)
CN (1) CN102016082A (fr)
CA (1) CA2718576C (fr)
ES (1) ES2401753T3 (fr)
IL (1) IL208088A0 (fr)
TW (1) TW201002831A (fr)
WO (1) WO2009108892A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201408782A (zh) * 2012-08-31 2014-03-01 Metal Ind Res & Dev Ct 深冷處理方法及其外殼的製造方法
JP6113456B2 (ja) * 2012-10-17 2017-04-12 三菱日立パワーシステムズ株式会社 析出硬化型マルテンサイト系ステンレス鋼とそれを用いた蒸気タービン長翼
US20140161658A1 (en) * 2012-12-06 2014-06-12 Crs Holdings, Inc. High Strength Precipitation Hardenable Stainless Steel
JP6005234B1 (ja) * 2015-09-29 2016-10-12 日新製鋼株式会社 疲労特性に優れた高強度ステンレス鋼板およびその製造方法
SE539763C2 (en) * 2016-06-16 2017-11-21 Uddeholms Ab Steel suitable for plastic molding tools
WO2021173976A1 (fr) * 2020-02-26 2021-09-02 Crs Holdings, Inc. Acier inoxydable durcissable par précipitation à haute résistance, à ténacité élevée à la fracture
CN114058767B (zh) * 2021-11-15 2022-09-09 东北大学 一种细化超级不锈钢中稀土夹杂物的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043798A (en) * 1974-09-20 1977-08-23 Sumitomo Metal Industries Limited Process for producing steel having improved low temperature impact characteristics
US5855844A (en) * 1995-09-25 1999-01-05 Crs Holdings, Inc. High-strength, notch-ductile precipitation-hardening stainless steel alloy and method of making
US5681528A (en) * 1995-09-25 1997-10-28 Crs Holdings, Inc. High-strength, notch-ductile precipitation-hardening stainless steel alloy
US5866066A (en) * 1996-09-09 1999-02-02 Crs Holdings, Inc. Age hardenable alloy with a unique combination of very high strength and good toughness
US5922148A (en) * 1997-02-25 1999-07-13 Howmet Research Corporation Ultra low sulfur superalloy castings and method of making
DE60202598T2 (de) * 2001-03-27 2006-03-23 CRS Holdings, Inc., Wilmington Ultra-hochfester ausscheidungshärtbarer rostfreier stahl und daraus hergestellter länglicher band

Also Published As

Publication number Publication date
WO2009108892A1 (fr) 2009-09-03
IL208088A0 (en) 2010-12-30
KR20100135242A (ko) 2010-12-24
TW201002831A (en) 2010-01-16
CN102016082A (zh) 2011-04-13
CA2718576A1 (fr) 2009-09-03
ES2401753T3 (es) 2013-04-24
EP2247761B1 (fr) 2012-12-19
EP2247761A1 (fr) 2010-11-10
US20090283182A1 (en) 2009-11-19
US20120055288A1 (en) 2012-03-08

Similar Documents

Publication Publication Date Title
CN101346486B9 (zh) 双相不锈钢
EP1373590B1 (fr) Acier inoxydable durcissable par precipitation et ultra-resistant et bande allongee produite avec cet acier
CA2718576C (fr) Procede de realisation d'un acier inoxydable durcissable par precipitation, resistant a la fatigue, a rigidite et a resistance elevees
EP1003922B1 (fr) Alliage d'acier inoxydable a haute resistance, durci par precipitation, et resistant aux entailles
CA2615682C (fr) Acier inoxydable martensitique a haute resistance, usinable, faconnable a froid, resistant a la corrosion
CA2893272C (fr) Acier inoxydable durcissable par precipitation a haute resistance
EP0859869B1 (fr) Alliage d'acier inoxydable de haute resistance resilient durci par precipitation
WO2018182480A1 (fr) Acier à outils pour travail à chaud
KR20190046729A (ko) 지열 발전 터빈 로터용 저합금강 및 지열 발전 터빈 로터용 저합금 물질, 및 이들의 제조 방법
JP2015193867A (ja) 高靱性熱間工具鋼
EP2682491B1 (fr) Acier pour outil de travail à chaud doté d'une excellente ténacité et son procédé de production
CN115667570B (zh) 高断裂韧性、高强度、沉淀硬化型不锈钢
US20020164261A1 (en) Cast shaped article made from high strength, precipitation-hardenable stainless steel and a process for making same
JP7223210B2 (ja) 耐疲労特性に優れた析出硬化型マルテンサイト系ステンレス鋼板
JP2002161342A (ja) 強度、耐疲労性及び耐食性に優れた構造用鋼
WO2022138194A1 (fr) Acier inoxydable martensitique durci par précipitation, doté d'excellentes caractéristiques de résistance à la fatigue
CN116391055A (zh) 高耐腐蚀奥氏体系不锈钢及其制造方法
JP2009097054A (ja) 非調質フェライト・パーライト鋼材

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20210831

MKLA Lapsed

Effective date: 20200227