Title:
【発明の名称】高温腐食抵抗性の単結晶ニッケル系スーパーアロイ
Document Type and Number:
Japanese Patent JP2990041
Kind Code:
B2
Abstract:
This invention relates to a hot corrosion resistant nickel-based superalloy comprising the following elements in percent by weight: from about 11.5 to about 13.5 percent chromium, from about 5.5 to about 8.5 percent cobalt, from about 0.40 to about 0.55 percent molybdenum, from about 4.5 to about 5.5 percent tungsten, from about 4.5 to about 5.8 percent tantalum, from about 0.05 to about 0.25 percent columbium, from about 3.4 to about 3.8 percent aluminum, from about 4.0 to about 4.4 percent titanium, from about 0.01 to about 0.06 percent hafnium, and 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.
Inventors:
GEARII ERU ERIKUSON
Application Number:
JP13598195A
Publication Date:
December 13, 1999
Filing Date:
May 08, 1995
Export Citation:
Assignee:
KYANON MASUKIIGAN CORP
International Classes:
C22C19/05; C22F1/10; C30B29/52; F01D5/28; (IPC1-7): C22C19/05
Domestic Patent References:
| JP559473A | ||||
| JP1165741A | ||||
| JP6230037A |
Attorney, Agent or Firm:
Yuzo Yamazaki (1 person outside)