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COBALT-BASE ALLOY WITH HIGH HEAT RESISTANCE AND HIGH STRENGTH AND PROCESS FOR PRODUCING THE SAME

Foreign code F110004376
File No. A281-06WO
Posted date Jul 14, 2011
Country Canada
Application number 2620606
Gazette No. 2620606
Gazette No. 2620606
Date of filing Sep 5, 2006
Gazette Date Mar 22, 2007
Gazette Date May 21, 2013
Priority data
  • P2005-267964 (Sep 15, 2005) JP
Title COBALT-BASE ALLOY WITH HIGH HEAT RESISTANCE AND HIGH STRENGTH AND PROCESS FOR PRODUCING THE SAME
Abstract

A Co-base alloy which has a basic composition including, in terms of mass proportion, 0.1% - 10% Al, 3.0 - 45% W, and Co as the remainder and has an intermetallic compound of the Ll2 type [ Co3 (Al, W)] dispersed and precipitated therein. Part of the Co may be replaced with Ni, Ir, Fe, Cr, Re, or Ru, while part of the Al and W may be replaced with Ni, Ti, Nb, Zr, V, Ta or Hf. The intermetallic compound [ Co3 (Al, W)] has a high melting point, and this compound and the matrix are mismatched little with respect to lattice constant . Thus, the cobalt-base alloy can have high-temperature strength equal to that of nickel-base alloys and excellent structure stability.

  • Applicant
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • Inventor
  • ISHIDA, KIYOHITO,
  • SATO, JUN,
  • OHNUMA, IKUO,
  • OIKAWA, KATUNARI,
  • KAINUMA, RYOSUKE
IPC(International Patent Classification)
Reference ( R and D project ) CREST The Innovation of Simulation Technology and the Construction of Foundations for Its Practical Use AREA
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