Title:
NOZZLE FOR GAS TURBINE WITH SUPERIOR THERMAL FATIGUE RESISTANCE
Document Type and Number:
Japanese Patent JPS5845345
Kind Code:
A
Abstract:
PURPOSE: To obtain a nozzle for a gas turbine with superior thermal fatigue resistance by suing a casting consisting of specified percentages of C, Cr, Co, W, Mo and Ni and contg. eutectic carbide and secondary carbide in the austenite matrix.
CONSTITUTION: A nozzle for a gas turbine is formed with a casting consisting of, by weight, 0.1W1% C, 20W35% Cr, 16W35% Co, 5W15% at least one of W and Mo, and the balance Ni or further contg. at least 1 kind of element selected from 0.02W1% Ti and Nb, 0.05W2% Ta, Hf and Zr, and 0.01W1% Y and Al. The casting contains eutectic carbide and secondary carbide in the austenite matrix. The obtd. nozzle has superior thermal fatigue (thermal impact) resistance and a long life.
Inventors:
KAGOHARA HIROMI
IIZUKA NOBUYUKI
FUKUI HIROSHI
SAKAMOTO MASAHIKO
IIZUKA NOBUYUKI
FUKUI HIROSHI
SAKAMOTO MASAHIKO
Application Number:
JP14222581A
Publication Date:
March 16, 1983
Filing Date:
September 11, 1981
Export Citation:
Assignee:
HITACHI LTD
International Classes:
F01D9/02; C22C19/05; C22C30/00; F01D5/28; (IPC1-7): C22C19/05; F01D9/02
Attorney, Agent or Firm:
Katsuo Ogawa