EP 1688508 A1 20060809 - Zirconium based alloys having excellent creep resistance
Title (en)
Zirconium based alloys having excellent creep resistance
Title (de)
Legierung auf der Basis von Zirkonium mit sehr guter Kriechfestigkeit
Title (fr)
Alliage à base de zirconium, présentant une bonne résistance au fluage
Publication
Application
Priority
KR 20050011362 A 20050207
Abstract (en)
The present invention relates to a zirconium based alloy composite having an excellent creep resistance and, more particularly, to a zirconium based alloy composite finally heat -treated to have the degree of recrystallization in the range of 40-70% in order to improve the creep resistance. The zirconium based alloy comprises 0.8ˆ¼1.8 wt.% niobium(Nb); 0.38ˆ¼0.50 wt.% tin(Sn); one or more elements selected from 0.1ˆ¼0.2 wt.% iron(Fe), 0.0 5~0.15 wt.% copper(Cu), and 0.12 wt.% chromium(Cr); 0.10ˆ¼0.15 wt.% oxygen(O); 0.006ˆ¼0.010 wt.% carbon(C); 0.006~0.010 wt.% s ilicon(Si); 0.0005ˆ¼0.0020 wt.% sulfur (S); and the balance zirconium(Zr). The zirconium alloy manufactured with the composition in accordance with the present invention has an excellent creep resistance compared to a conventional Zircaloy -4, and may effectively be used as a nuclear cladding tube, supporting lattice and inner structures of reactor core in the nuclear power plant utilizing light or heavy water reactor.
IPC 8 full level
C22C 16/00 (2006.01)
CPC (source: EP KR US)
C22C 16/00 (2013.01 - EP KR US); C22F 1/186 (2013.01 - EP US)
Citation (search report)
- [X] EP 1308966 A1 20030507 - KOREA ATOMIC ENERGY RES [KR], et al
- [X] US 6261516 B1 20010717 - JEONG YONG HWAN [KR], et al
- [X] US 5940464 A 19990817 - MARDON JEAN-PAUL [FR], et al
- [X] EP 1225243 A1 20020724 - KOREA ATOMIC ENERGY RES [KR], et al
- [A] R.F. ALLEN ET AL.: "ANNUAL BOOK OF ASTM STANDARDS 2001", 2001, ASTM, BALTIMORE, USA, XP002309830, 011486
- [A] FOSTER J P ET AL: "INFLUENCE OF FINAL RECRYSTALLIZATION HEAT TREATMENT ON ZIRCALOY-4 STRIP CORROSION", JOURNAL OF NUCLEAR MATERIALS, AMSTERDAM, NL, vol. 173, January 1990 (1990-01-01), pages 164 - 178, XP000255690, ISSN: 0022-3115
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1688508 A1 20060809; EP 1688508 B1 20140101; CN 1818111 A 20060816; CN 1818111 B 20101222; JP 2006214001 A 20060817; JP 4099493 B2 20080611; KR 100733701 B1 20070628; KR 20060090128 A 20060810; US 2006177341 A1 20060810
DOCDB simple family (application)
EP 05007163 A 20050401; CN 200510066886 A 20050428; JP 2005161111 A 20050601; KR 20050011362 A 20050207; US 9772605 A 20050331