Global Patent Index - EP 1462533 A1

EP 1462533 A1 20040929 - Nickel base heat resistant cast alloy and turbine wheels made thereof

Title (en)

Nickel base heat resistant cast alloy and turbine wheels made thereof

Title (de)

Hitzebeständige Nickelgusslegierung und daraus hergestellte Turbinenräder

Title (fr)

Alliage de fonte à base de nickel résistant à la chaleur et roues de turbines de cette alliage

Publication

EP 1462533 A1 20040929 (EN)

Application

EP 04006947 A 20040323

Priority

  • JP 2003080844 A 20030324
  • JP 2004014921 A 20040122

Abstract (en)

Disclosed is a nickel-base super heat resistant cast alloy, from which turbine wheels of automobile engines can be manufacture by casting. The alloy consists essentially of, by weight %, C: 0.02-0.50%, Si: up to 1.0%, Mn: up to 1.0%, Cr: 4.0-10.0%, Al: 2.0-8.0%, Co: up to 15.0%, W: 8.0-16.0%, Ta: 2.0-8.0%, Ti: up to 3.0%, Zr: 0.001-0.200% and B: 0.005-0.300% and the balance of Ni and inevitable impurities, provided that, Ä%AlÜ+Ä%TiÜ+Ä%TaÜ, by atomic %, amounts to 12.0-15.5%, that it contains gamma / gamma '-eutectoid of, by area percentage, 1-15%, that it contains carbides of, by area percentage, 1-10%, and that the "M-value" determined by the alloy composition is in the range of 93-98. The turbine wheels withstand temperature increase of exhaust gas.

IPC 1-7

C22C 19/05; F01D 5/28

IPC 8 full level

C22C 19/05 (2006.01); F01D 5/28 (2006.01); F02B 39/00 (2006.01)

CPC (source: EP US)

C22C 19/057 (2013.01 - EP US); F01D 5/28 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

DE FR

DOCDB simple family (publication)

EP 1462533 A1 20040929; EP 1462533 B1 20060531; CN 100355923 C 20071219; CN 1570171 A 20050126; DE 602004000997 D1 20060706; DE 602004000997 T2 20061102; JP 2004307999 A 20041104; JP 3753143 B2 20060308; US 2004187973 A1 20040930

DOCDB simple family (application)

EP 04006947 A 20040323; CN 200410071474 A 20040324; DE 602004000997 T 20040323; JP 2004014921 A 20040122; US 80643904 A 20040323