EP 1945827 B1 20120530 - COLD-WORKABLE TI ALLOY
Title (en)
COLD-WORKABLE TI ALLOY
Title (de)
KALTVERFORMBARE T -LEG ERUNG
Title (fr)
ALLIAGE DE TI FORME A FROID
Publication
Application
Priority
- EP 2006010569 W 20061103
- DE 102005052918 A 20051103
Abstract (en)
[origin: WO2007051637A1] The invention makes it possible to produce workpieces from titanium alloys in a low-cost cold-working process. This is achieved by means of a (a+ß) titanium alloy with approximately 2 - 4.0% by weight of aluminium, approximately 4 - 5.5% by weight of vanadium, and approximately 4.5 - 6.0% by weight of molybdenum, which is made suitable for cold working while maintaining adequate strength of the workpiece produced by the additional alloying components of approximately 0.5 - 1.5% by weight of zirconium and approximately 0.5 - 1.5% by weight of tin. Furthermore, the cold workability is achieved according to the invention by means of a heat treatment process, comprising the steps of: annealing the titanium alloy at a lower annealing temperature that lies between 160° and 230° below the transformation temperature (ß-transus) and cooling the titanium alloy to ambient temperature. The titanium alloy is preferably first annealed at an upper annealing temperature, which lies between 50° and 100° below the transformation temperature (ß-transus).
IPC 8 full level
C22F 1/18 (2006.01); C22C 14/00 (2006.01)
CPC (source: EP)
C22C 14/00 (2013.01); C22F 1/183 (2013.01)
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 LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007051637 A1 20070510; DE 102005052918 A1 20070516; EP 1945827 A1 20080723; EP 1945827 B1 20120530; ES 2387684 T3 20120928; JP 2009515047 A 20090409; JP 5210874 B2 20130612
DOCDB simple family (application)
EP 2006010569 W 20061103; DE 102005052918 A 20051103; EP 06806675 A 20061103; ES 06806675 T 20061103; JP 2008539310 A 20061103