EP 1127948 A2 20010829 - Hot corrosion resistant single crystal nickel-based superalloys
Title (en)
Hot corrosion resistant single crystal nickel-based superalloys
Title (de)
Einkristalline Superlegierungen mit guter Korrosionsbeständigkeit bei hohen Temperaturen
Title (fr)
Superalliages monocristallins à base de nickel résistant à la corrosion à haute température
Publication
Application
Priority
EP 95116194 A 19951013
Abstract (en)
This invention relates to a hot corrosion resistant nickel-based superalloy comprising the following elements in percent by weight: from about 14.2 to about 15.5 percent chromium, from about 2.0 to about 4.0 percent cobalt, from about 0.30 to about 0.45 percent molybdenum, from about 4.0 to about 5.0 percent tungsten, from about 4.5 to about 5.8 percent tantalum, from about 0.05 to about 0.25 percent columbium, from about 3.2 to about 3.6 percent aluminum, from about 4.0 to about 4.4 percent titanium, from about 0.01 to about 0.06 percent hafnium, ard the balance nickel plus incidental impurities, the superalloy having a phasial stability number NV3B less than about 2.45. Single crystal articles can be suitably made from the superalloy of this invention. The article can be a component for a gas turbine engine and, more particularly, the component can be a gas turbine blade or gas turbine vane. <IMAGE>
IPC 1-7
IPC 8 full level
C22C 19/05 (2006.01)
CPC (source: EP)
C22C 19/056 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 1127948 A2 20010829; EP 1127948 A3 20010905; EP 1127948 B1 20020724; AT E221138 T1 20020815; DE 69527557 D1 20020829; DE 69527557 T2 20021107; DK 1127948 T3 20021111; ES 2184779 T3 20030416
DOCDB simple family (application)
EP 95116194 A 19951013; AT 95116194 T 19951013; DE 69527557 T 19951013; DK 95116194 T 19951013; ES 95116194 T 19951013