EP 2251445 A4 20111214 - TIAL-BASED ALLOY, PROCESS FOR PRODUCTION OF THE SAME, AND ROTOR BLADE COMPRISING THE SAME
Title (en)
TIAL-BASED ALLOY, PROCESS FOR PRODUCTION OF THE SAME, AND ROTOR BLADE COMPRISING THE SAME
Title (de)
TIAL-LEGIERUNG, HERSTELLUNGSVERFAHERN DAFÜR UND ROTORSCHAUFEL, DIE SIE UMFASST
Title (fr)
ALLIAGE À BASE DE TIAL ET SON PROCÉDÉ DE FABRICATION, ET LAME DE ROTOR LE COMPRENANT
Publication
Application
Priority
- JP 2009051539 W 20090130
- JP 2008062690 A 20080312
Abstract (en)
[origin: EP2251445A1] A hot-forged TiAl-based alloy having excellent oxidation resistance and high strength at high temperatures, and a process for producing such an alloy. A TiAl-based alloy comprising Al: (40+a) atomic % and Nb: b atomic %, with the remainder being Ti and unavoidable impurities, wherein a and b satisfy formulas (1) and (2) below. 0 ‰¤ a ‰¤ 2 3 + a ‰¤ b ‰¤ 7 + a Also, a TiAl-based alloy comprising Al: (40+a) atomic % and Nb: b atomic %, and further comprising one or more elements selected from the group consisting of V: c atomic %, Cr: d atomic % and Mo: e atomic %, with the remainder being Ti and unavoidable impurities, wherein a to e satisfy formulas (3) to (9) shown below. 0 ‰¤ a ‰¤ 2 3 + a ‰¤ b + 1.0 ¢ c + 1.8 ¢ d + 3.8 ¢ e ‰¤ 7 + a b ‰¥ 2 c ‰¥ 0 d ‰¥ 0 e ‰¥ 0 c + d + e > 0
IPC 8 full level
C22C 14/00 (2006.01); B21J 5/00 (2006.01); B21K 3/04 (2006.01); C22F 1/00 (2006.01); C22F 1/18 (2006.01); F01D 5/28 (2006.01); F02C 7/00 (2006.01)
CPC (source: EP US)
B21J 5/00 (2013.01 - EP US); B21K 3/04 (2013.01 - EP US); C22C 14/00 (2013.01 - EP US); C22F 1/183 (2013.01 - EP US); F05B 2220/40 (2013.01 - EP US); F05B 2230/25 (2013.01 - EP US); F05C 2201/0412 (2013.01 - EP US)
Citation (search report)
- [X] US 6051084 A 20000418 - TETSUI TOSHIMITSU [JP]
- [E] EP 2075349 A2 20090701 - GEESTHACHT GKSS FORSCHUNG [DE]
- [X] EP 1127949 A2 20010829 - MITSUBISHI HEAVY IND LTD [JP]
- See references of WO 2009113335A1
Designated contracting state (EPC)
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 SE SI SK TR
DOCDB simple family (publication)
EP 2251445 A1 20101117; EP 2251445 A4 20111214; JP 2009215631 A 20090924; US 2010316525 A1 20101216; WO 2009113335 A1 20090917
DOCDB simple family (application)
EP 09720943 A 20090130; JP 2008062690 A 20080312; JP 2009051539 W 20090130; US 86352909 A 20090130