公开(公告)号：EP1498503A4

公开(公告)日：2006-01-25

申请号：EP03745013

申请日：2003-03-27

Applicant: NAT INST FOR MATERIALS SCIENCE ,  ISHIKAWAJIMA HARIMA HEAVY IND

Inventor： KOBAYASHI TOSHIHARU ,  KOIZUMI YUTAKA ,  YOKOKAWA TADAHARU ,  HARADA HIROSHI ,  AOKI YASUHIRO ,  MASAKI SHOUJU

IPC: C22C19/05 ,  C30B11/00

CPC classification number: C22C19/057

Abstract: A Ni-base directionally solidified superalloy or a Ni-base single crystal superalloy, characterized in that it has a composition, in wt %: Al: 5.0 to 7.0 %, Ta+Nb+Ti: 4.0 to 16.0 %, Mo: 1.0 to 4.5 wt %, W: 4.0 to 8.0 wt %, Re: 3.0 to 8.0 wt %, Hf: 2.0 wt % or less, Cr: 10.0 % or less, Co: 15.0 % or less, Ru: 1.0 to 4.0 wt %, C: 0.2 wt % or less, B: 0.03 %, and balance: Ni and inevitable impurities. The Ni-base base directionally solidified superalloy or single crystal superalloy has an enhanced creep strength at high temperatures, and thus can be used for a turbine blade, a turbine vane and the like of a gas turbine for use in a jet engine or for industrial use.

公开(公告)号：CA2479774A1

公开(公告)日：2003-10-02

申请号：CA2479774

申请日：2003-03-27

Applicant: NAT INST FOR MATERIALS SCIENCE ,  ISHIKAWAJIMA HARIMA HEAVY IND

Inventor： KOIZUMI YUTAKA ,  KOBAYASHI TOSHIHARU ,  HARADA HIROSHI ,  YOKOKAWA TADAHARU ,  MASAKI SHOUJU ,  AOKI YASUHIRO

IPC: C22C19/05 ,  C30B11/00

Abstract: A Ni-base directionally solidified superalloy or a Ni-base single crystal superalloy, characterized in that it has a composition, in wt %: Al: 5.0 to 7.0 %, Ta+Nb+Ti: 4.0 to 16.0 %, Mo: 1.0 to 4.5 wt %, W: 4.0 to 8.0 wt %, Re: 3.0 to 8.0 wt %, Hf: 2.0 wt % or less, Cr: 10.0 % or less, Co: 15.0 % or les s, Ru: 1.0 to 4.0 wt %, C: 0.2 wt % or less, B: 0.03 %, and balance: Ni and inevitable impurities. The Ni-base base directionally solidified superalloy or single crystal superalloy has an enhanced creep strength at high temperature s, and thus can be used for a turbine blade, a turbine vane and the like of a g as turbine for use in a jet engine or for industrial use.

公开(公告)号：CA2479774C

公开(公告)日：2012-09-04

申请号：CA2479774

申请日：2003-03-27

Applicant: NAT INST FOR MATERIALS SCIENCE ,  ISHIKAWAJIMA HARIMA HEAVY IND

Inventor： KOBAYASHI TOSHIHARU ,  KOIZUMI YUTAKA ,  YOKOKAWA TADAHARU ,  HARADA HIROSHI ,  AOKI YASUHIRO ,  MASAKI SHOUJU

IPC: C22C19/05 ,  C30B11/00

Abstract: A Ni-base directionally solidified superalloy and a Ni-base single-crystal superalloy, which have superior creep strength at a high temperature, consists essentially of from 5.0 percent by weight to 7.0 percent by weight of Al, from 4.0 percent by weight to 16.0 percent by weight of Ta + Nb + Ti, from 1.0 percent by weight to 4.5 percent by weight of Mo, from 4.0 percent by weight to 8.0 percent by weight of W, from 3.0 percent by weight to 8.0 percent by weight of Re, 2.0 percent by weight or less of Hf, 10.0 percent by weight or less of Cr, 15.0 percent by weight or less of Co, from 1.0 percent by weight to 4.0 percent by weight of Ru, 0.2 percent by weight or less of C, 0.03 percent by weight or less of B, and Ni and inescapable impurities as a balance. The superalloys can be used for a turbine blade, a turbine vane and the like of a jet engine, an industrial gas turbine and the like.

公开(公告)号：AU2003289214A1

公开(公告)日：2004-06-30

申请号：AU2003289214

申请日：2003-12-05

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： KOBAYASHI TOSHIHARU ,  KOIZUMI YUTAKA ,  YOKOKAWA TADAHARU ,  HARADA HIROSHI ,  AOKI YASUHIRO ,  ARAI MIKIYA ,  MASAKI SHOUJU

IPC: C22C19/05

Abstract: The object of the present invention is to provide an Ni-based single crystal super alloy capable of improving strength by preventing precipitation of a TCP phase at high temperatures. This object is achieved by an Ni-based single crystal super alloy having a composition comprising 5.0-7.0 wt% of Al, 4.0-10.0 wt% of Ta, 1.1-4.5 wt% of Mo, 4.0-10.0 wt% of W, 3.1-8.0 wt% of Re, 0-0.50 wt% of Hf, 2.0-5.0 wt% of Cr, 0-9.9 wt% of Co and 4.1-14.0 wt% of Ru in terms of its weight ratio, with the remainder consisting of Ni and unavoidable impurities.