FR2576322B1 - Procede pour le formage d'articles a partir d'alliages de zirconium - Google Patents

Procede pour le formage d'articles a partir d'alliages de zirconium

Info

Publication number
FR2576322B1
FR2576322B1 FR8600796A FR8600796A FR2576322B1 FR 2576322 B1 FR2576322 B1 FR 2576322B1 FR 8600796 A FR8600796 A FR 8600796A FR 8600796 A FR8600796 A FR 8600796A FR 2576322 B1 FR2576322 B1 FR 2576322B1
Authority
FR
France
Prior art keywords
zirconium alloys
forming articles
articles
zirconium
alloys
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
FR8600796A
Other languages
English (en)
Other versions
FR2576322A1 (fr
Inventor
George Paul Sabol Et Samuel Gilbert Mcdonald, Iii
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of FR2576322A1 publication Critical patent/FR2576322A1/fr
Application granted granted Critical
Publication of FR2576322B1 publication Critical patent/FR2576322B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • C22F1/186—High-melting or refractory metals or alloys based thereon of zirconium or alloys based thereon
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/02—Fuel elements
    • G21C3/04—Constructional details
    • G21C3/06—Casings; Jackets
    • G21C3/07—Casings; Jackets characterised by their material, e.g. alloys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Powder Metallurgy (AREA)
  • Heat Treatment Of Steel (AREA)
  • Catalysts (AREA)
  • Laminated Bodies (AREA)
FR8600796A 1985-01-22 1986-01-21 Procede pour le formage d'articles a partir d'alliages de zirconium Expired - Fee Related FR2576322B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/693,547 US4649023A (en) 1985-01-22 1985-01-22 Process for fabricating a zirconium-niobium alloy and articles resulting therefrom

Publications (2)

Publication Number Publication Date
FR2576322A1 FR2576322A1 (fr) 1986-07-25
FR2576322B1 true FR2576322B1 (fr) 1994-04-08

Family

ID=24785112

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8600796A Expired - Fee Related FR2576322B1 (fr) 1985-01-22 1986-01-21 Procede pour le formage d'articles a partir d'alliages de zirconium

Country Status (3)

Country Link
US (1) US4649023A (fr)
JP (1) JP2575644B2 (fr)
FR (1) FR2576322B1 (fr)

Families Citing this family (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0198570B1 (fr) * 1985-01-22 1990-08-29 Westinghouse Electric Corporation Procédé de fabrication de tubes à parois minces en un alliage zirconium-niobium
JPH0762224B2 (ja) * 1986-02-03 1995-07-05 株式会社日立製作所 高強度高耐食性ジルコニウム基合金部材の製造法
JPS62180047A (ja) * 1986-02-03 1987-08-07 Hitachi Ltd ジルコニウム基合金部材の製造法
FR2599049B1 (fr) * 1986-05-21 1988-07-01 Cezus Co Europ Zirconium Procede de fabrication d'un feuillard en zircaloy 2 ou zircaloy 4 partiellement recristallise et feuillard obtenu
JPH0762197B2 (ja) * 1986-07-25 1995-07-05 株式会社神戸製鋼所 原子炉用ジルコニウム合金
US4963323A (en) * 1986-07-29 1990-10-16 Mitsubishi Kinzoku Kabushiki Kaisha Highly corrosion-resistant zirconium alloy for use as nuclear reactor fuel cladding material
JPH0762225B2 (ja) * 1986-08-29 1995-07-05 株式会社日立製作所 高耐食ジルコニウム合金製品の製造法
US4876064A (en) * 1987-04-23 1989-10-24 General Electric Company Corrosion resistant zirconium alloys containing bismuth
EP0287888B1 (fr) * 1987-04-23 1991-05-02 General Electric Company Alliages à base de zirconium résistant à la corrosion
US4863685A (en) * 1987-04-23 1989-09-05 General Electric Company Corrosion resistant zirconium alloys
FR2624136B1 (fr) * 1987-12-07 1992-06-05 Cezus Co Europ Zirconium Tube, barre ou tole en alliage de zirconium, resistant a la fois a la corrosion uniforme et a la corrosion nodulaire et procede de fabrication correspondant
JP2687538B2 (ja) * 1988-01-22 1997-12-08 三菱マテリアル株式会社 原子炉燃料集合体用Ｚｒ合金
FR2626291B1 (fr) * 1988-01-22 1991-05-03 Mitsubishi Metal Corp Alliage a base de zirconium a utiliser comme assemblage pour combustible dans un reacteur nucleaire
JP2548773B2 (ja) * 1988-06-06 1996-10-30 三菱重工業株式会社 ジルコニウム基合金とその製造方法
US4879093A (en) * 1988-06-10 1989-11-07 Combustion Engineering, Inc. Ductile irradiated zirconium alloy
JP2580273B2 (ja) * 1988-08-02 1997-02-12 株式会社日立製作所 原子炉用燃料集合体およびその製造方法並びにその部材
JP2559136B2 (ja) * 1988-10-26 1996-12-04 三菱マテリアル株式会社 原子炉燃料被覆管支持格子用Ｚｒ合金
JP2726299B2 (ja) * 1989-02-14 1998-03-11 日本核燃料開発株式会社 原子炉用高耐食性ジルコニウム合金
US4990305A (en) * 1989-06-28 1991-02-05 Westinghouse Electric Corp. Single peak radial texture zircaloy tubing
US5125985A (en) * 1989-08-28 1992-06-30 Westinghouse Electric Corp. Processing zirconium alloy used in light water reactors for specified creep rate
US5112573A (en) * 1989-08-28 1992-05-12 Westinghouse Electric Corp. Zirlo material for light water reactor applications
US5230758A (en) * 1989-08-28 1993-07-27 Westinghouse Electric Corp. Method of producing zirlo material for light water reactor applications
FR2664907B1 (fr) * 1990-07-17 1997-12-05 Cezus Zirconium Cie Europ Procede de fabrication d'une tole ou feuillard en zircaloy de bonne formabilite et feuillards obtenus.
US5211774A (en) * 1991-09-18 1993-05-18 Combustion Engineering, Inc. Zirconium alloy with superior ductility
SE9103052D0 (sv) * 1991-10-21 1991-10-21 Asea Atom Ab Zirkoniumbaserad legering foer komponenter i kaernreaktorer
US5244514A (en) * 1992-02-14 1993-09-14 Combustion Engineering, Inc. Creep resistant zirconium alloy
US5266131A (en) * 1992-03-06 1993-11-30 Westinghouse Electric Corp. Zirlo alloy for reactor component used in high temperature aqueous environment
DE69329100T2 (de) * 1992-12-09 2001-03-22 Koninkl Philips Electronics Nv Ladungsgekoppelte Anordnung
US5254308A (en) * 1992-12-24 1993-10-19 Combustion Engineering, Inc. Zirconium alloy with improved post-irradiation properties
US5278882A (en) * 1992-12-30 1994-01-11 Combustion Engineering, Inc. Zirconium alloy with superior corrosion resistance
US5305359A (en) * 1993-05-13 1994-04-19 General Electric Company Dimensionally stable and corrosion-resistant fuel channels and related method of manufacture
US5366690A (en) * 1993-06-18 1994-11-22 Combustion Engineering, Inc. Zirconium alloy with tin, nitrogen, and niobium additions
SE502866C2 (sv) * 1993-06-30 1996-02-05 Asea Atom Ab Bränsleelement för tryckvattenreaktor vars ledrör är slutvärmebehandlade i två steg
UA40658C2 (uk) * 1994-08-31 2001-08-15 Абб Комбасчен Інджинірінг Ньюклие Пауе, Інк Сплав цирконію з вольфрамом і нікелем
FR2737335B1 (fr) 1995-07-27 1997-10-10 Framatome Sa Tube pour assemblage de combustible nucleaire et procede de fabrication d'un tel tube
US5805656A (en) * 1996-04-08 1998-09-08 General Electric Company Fuel channel and fabrication method therefor
JP3726367B2 (ja) * 1996-08-09 2005-12-14 三菱マテリアル株式会社 軽水炉用燃料棒およびその製造方法
JP3564887B2 (ja) * 1996-08-09 2004-09-15 三菱マテリアル株式会社 軽水炉用燃料棒およびその製造方法
UA53696C2 (uk) 1997-03-12 2003-02-17 Откритоє Акціонєрноє Общєство "Чєпєцкій Мєханічєскій Завод" Спосіб виготовлення трубних виробів з цирконієвих сплавів (варіанти)
US5838753A (en) * 1997-08-01 1998-11-17 Siemens Power Corporation Method of manufacturing zirconium niobium tin alloys for nuclear fuel rods and structural parts for high burnup
US5844959A (en) * 1997-08-01 1998-12-01 Siemens Power Corporation Zirconium niobium tin alloys for nuclear fuel rods and structural parts for high burnup
US5835550A (en) * 1997-08-28 1998-11-10 Siemens Power Corporation Method of manufacturing zirconium tin iron alloys for nuclear fuel rods and structural parts for high burnup
JPH11194189A (ja) * 1997-10-13 1999-07-21 Mitsubishi Materials Corp 耐食性およびクリープ特性にすぐれた原子炉燃料被覆管用Ｚｒ合金管の製造方法
KR100286871B1 (ko) 1998-10-21 2001-04-16 장인순 내부식성과 기계적 특성이 우수한 지르코늄합금 조성물
US7985373B2 (en) * 1998-03-31 2011-07-26 Framatome Anp Alloy and tube for nuclear fuel assembly and method for making same
FR2776821B1 (fr) * 1998-03-31 2000-06-02 Framatome Sa Procede de fabrication d'un tube pour assemblage de combustible nucleaire
US20040118491A1 (en) * 1998-03-31 2004-06-24 Jean-Paul Mardon Alloy and tube for nuclear fuel assembly and method for making same
KR100334252B1 (ko) * 1999-11-22 2002-05-02 장인순 니오븀이 첨가된 핵연료피복관용 지르코늄 합금의 조성물
AU2001234492A1 (en) * 2000-02-18 2001-08-27 Westinghouse Electric Company Llc Zirconium niobium-tin alloy for use in nuclear reactors and method of its manufacture
KR100382997B1 (ko) † 2001-01-19 2003-05-09 한국전력공사 고연소도 핵연료 용 니오븀 함유 지르코늄 합금 관재 및판재의 제조방법
KR100441562B1 (ko) * 2001-05-07 2004-07-23 한국수력원자력 주식회사 우수한 내식성과 기계적 특성을 갖는 지르코늄 합금핵연료 피복관 및 그 제조 방법
US7194980B2 (en) * 2003-07-09 2007-03-27 John Stuart Greeson Automated carrier-based pest control system
EP1730318A4 (fr) * 2004-03-23 2010-08-18 Westinghouse Electric Corp Alliages au zirconium a capacite anticorrosion amelioree et procede d'elaboration
US10221475B2 (en) 2004-03-23 2019-03-05 Westinghouse Electric Company Llc Zirconium alloys with improved corrosion/creep resistance
US9284629B2 (en) 2004-03-23 2016-03-15 Westinghouse Electric Company Llc Zirconium alloys with improved corrosion/creep resistance due to final heat treatments
US7132651B2 (en) * 2004-04-23 2006-11-07 Framatome Anp, Inc. In-situ BWR and PWR CRUD flake analysis method and tool
WO2006004499A1 (fr) 2004-07-06 2006-01-12 Westinghouse Electric Sweden Ab Capsule de combustible destinee a un reacteur nucleaire a eau bouillante
FR2874119B1 (fr) * 2004-08-04 2006-11-03 Framatome Anp Sas Procede de fabrication d'un tube de gainage de combustible pour reacteur nucleaire, et tube ainsi obtenu
US8043448B2 (en) * 2004-09-08 2011-10-25 Global Nuclear Fuel-Americas, Llc Non-heat treated zirconium alloy fuel cladding and a method of manufacturing the same
US9139895B2 (en) * 2004-09-08 2015-09-22 Global Nuclear Fuel—Americas, LLC Zirconium alloy fuel cladding for operation in aggressive water chemistry
KR100733701B1 (ko) * 2005-02-07 2007-06-28 한국원자력연구원 크립저항성이 우수한 지르코늄 합금 조성물
US20060227924A1 (en) * 2005-04-08 2006-10-12 Westinghouse Electric Company Llc High heat flux rate nuclear fuel cladding and other nuclear reactor components
SE530673C2 (sv) * 2006-08-24 2008-08-05 Westinghouse Electric Sweden Vattenreaktorbränslekapslingsrör
FR2909388B1 (fr) * 2006-12-01 2009-01-16 Areva Np Sas Alliage de zirconium resistant a la corrosion en ombres portees pour composant d'assemblage de combustible pour reacteur a eau bouillante,composant realise en cet alliage, assemblage de combustible et son utilisation.
KR100831578B1 (ko) * 2006-12-05 2008-05-21 한국원자력연구원 원자력용 우수한 내식성을 갖는 지르코늄 합금 조성물 및이의 제조방법
KR100835830B1 (ko) * 2007-01-11 2008-06-05 한국원자력연구원 β-니오븀 석출물의 분포 제어를 통한 내식성이 우수한지르코늄 합금 핵연료피복관의 제조방법
JP5916286B2 (ja) * 2010-11-08 2016-05-11 株式会社日立製作所 高耐食ジルコニウム合金材料の製造方法
US8831166B2 (en) * 2011-02-04 2014-09-09 Battelle Energy Alliance, Llc Zirconium-based alloys, nuclear fuel rods and nuclear reactors including such alloys, and related methods
JP5982474B2 (ja) 2011-06-16 2016-08-31 ウエスチングハウス・エレクトリック・カンパニー・エルエルシー ジルコニウム基合金の製造方法
KR101378066B1 (ko) 2012-02-28 2014-03-28 한국수력원자력 주식회사 합금원소의 첨가량을 낮추어 부식저항성을 향상시킨 핵연료 피복관용 지르코늄 합금 조성물 및 이를 이용한 지르코늄 합금 핵연료 피복관의 제조방법
KR20130098621A (ko) 2012-02-28 2013-09-05 한국원자력연구원 가혹한 원자로 가동조건에서 내산화성이 우수한 핵연료피복관용 지르코늄 합금 조성물 및 이를 이용한 지르코늄 합금 핵연료 피복관의 제조방법
KR20130098618A (ko) 2012-02-28 2013-09-05 한국원자력연구원 사고조건 하의 원자로 내에서 우수한 내산화성을 나타내는 핵연료 피복관용 지르코늄 합금 조성물, 이를 이용하여 제조한 지르코늄 합금 핵연료 피복관 및 이의 제조방법
KR101630403B1 (ko) 2016-01-27 2016-06-14 한전원자력연료 주식회사 다단 열간압연을 적용한 핵연료용 지르코늄 부품의 제조방법
US10446276B2 (en) 2016-06-21 2019-10-15 Westinghouse Electric Company Llc Method of manufacturing a SiC composite fuel cladding with inner Zr alloy liner
US11289213B2 (en) 2017-08-31 2022-03-29 Westinghouse Electric Company Llc Control rods for light water reactors
US20190139654A1 (en) 2017-10-31 2019-05-09 Westinghouse Electric Company, Llc High temperature nuclear fuel system for thermal neutron reactors
AR110991A1 (es) 2018-02-21 2019-05-22 Comision Nac De Energia Atomica Cnea Aleaciones de circonio con resistencia a la corrosión y temperatura de servicio mejoradas para usar en el revestimiento del combustible y las partes estructurales del núcleo de un reactor nuclear

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894866A (en) * 1958-01-21 1959-07-14 Marion L Picklesimer Method for annealing and rolling zirconium-base alloys
US3005706A (en) * 1958-05-27 1961-10-24 Westinghouse Electric Corp High strength alloys of zirconium
US3121034A (en) * 1962-03-13 1964-02-11 Anderko Kurt Zirconium alloy treatment process
DE1249531B (de) * 1962-04-19 1967-09-07 Metallgesellschaft Aktiengesellschaft Frankfurt/M Verfahren zur Herstellung eines Ausgangsmatenals fur Drahte und Bander aus Supraleitern auf Niobbasis
GB988069A (en) * 1962-09-26 1965-04-07 Imp Metal Ind Kynoch Ltd Improvements in or relating to zirconium-base alloys
US3567522A (en) * 1965-12-15 1971-03-02 Westinghouse Electric Corp Method of producing zirconium base alloys
US3645800A (en) * 1965-12-17 1972-02-29 Westinghouse Electric Corp Method for producing wrought zirconium alloys
US3575806A (en) * 1967-11-24 1971-04-20 Ca Atomic Energy Ltd Hydriding resistant zirconium alloy components
US3689324A (en) * 1968-09-27 1972-09-05 George W Wiener Process for obtaining preferred orientation in zirconium and its alloy
US3865635A (en) * 1972-09-05 1975-02-11 Sandvik Ab Method of making tubes and similar products of a zirconium alloy
US3826124A (en) * 1972-10-25 1974-07-30 Zirconium Technology Corp Manufacture of tubes with improved metallic yield strength and elongation properties
US3884728A (en) * 1973-02-26 1975-05-20 Exxon Nuclear Co Inc Thermo-mechanical treatment of zirconium alloys
FR2219978B1 (fr) * 1973-03-02 1976-04-30 Commissariat Energie Atomique
CA988748A (en) * 1973-05-11 1976-05-11 Donald J. Cameron High strenght corrosion-resistant zirconium aluminum alloys
US4094706A (en) * 1973-05-11 1978-06-13 Atomic Energy Of Canada Limited Preparation of zirconium alloys
CA1014833A (fr) * 1974-07-12 1977-08-02 Stuart R. Macewen Alliage a base de zirconium et methode de fabrication
US4169743A (en) * 1974-12-23 1979-10-02 General Electric Company Zirconium-base alloy nuclear fuel container and method
CA1027781A (fr) * 1975-05-06 1978-03-14 Brian A. Cheadle Procede de fabrication de tubes tres resistants en alliage de sn-mo-nb-zr
FR2334763A1 (fr) * 1975-12-12 1977-07-08 Ugine Aciers Procede permettant d'ameliorer la tenue a chaud du zirconium et de ses alliages
US4238251A (en) * 1977-11-18 1980-12-09 General Electric Company Zirconium alloy heat treatment process and product
US4212686A (en) * 1978-03-03 1980-07-15 Ab Atomenergi Zirconium alloys
CA1163120A (fr) * 1980-07-08 1984-03-06 Brian A. Cheadle Tubes en alliage a base de zr a coefficient de dilatation reduit pour reacteurs
JPS57210961A (en) * 1981-06-19 1982-12-24 Toshiba Corp Manufacture of fuel cladding pipe for nuclear reactor
US4450016A (en) * 1981-07-10 1984-05-22 Santrade Ltd. Method of manufacturing cladding tubes of a zirconium-based alloy for fuel rods for nuclear reactors
JPS5822366A (ja) * 1981-07-29 1983-02-09 Hitachi Ltd ジルコニウム基合金の製造法
DE3278571D1 (en) * 1981-07-29 1988-07-07 Hitachi Ltd Process for producing zirconium-based alloy
JPS5822365A (ja) * 1981-07-29 1983-02-09 Hitachi Ltd ジルコニウム基合金の製造方法
CA1214978A (fr) * 1982-01-29 1986-12-09 Samuel G. Mcdonald Produits en alliage de zirconium et procedes de fabrication connexes
SE434679B (sv) * 1982-07-01 1984-08-06 Asea Ab Anordning vid hermetiskt slutna lastceller for eliminering av inverkan pa metverdet av en skillnad mellan trycket i ett givarrum och atmosferstrycket
EP0198570B1 (fr) * 1985-01-22 1990-08-29 Westinghouse Electric Corporation Procédé de fabrication de tubes à parois minces en un alliage zirconium-niobium

Also Published As

Publication number Publication date
US4649023A (en) 1987-03-10
FR2576322A1 (fr) 1986-07-25
JPS61170552A (ja) 1986-08-01
JP2575644B2 (ja) 1997-01-29

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