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公开(公告)号：CA2479774A1
公开(公告)日：2003-10-02
申请号：CA2479774
申请日：2003-03-27
Inventor： KOIZUMI YUTAKA , KOBAYASHI TOSHIHARU , HARADA HIROSHI , YOKOKAWA TADAHARU , MASAKI SHOUJU , AOKI YASUHIRO
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.
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公开(公告)号：CA2810504C
公开(公告)日：2016-01-05
申请号：CA2810504
申请日：2011-11-09
Applicant: HONDA MOTOR CO LTD , NAT INST FOR MATERIALS SCIENCE
Inventor： GU YUEFENG , YOKOKAWA TADAHARU , KOBAYASHI TOSHIHARU , OSADA TOSHIO , FUJIOKA JUNZO , HARADA HIROSHI , NAGAHAMA DAISUKE , KIKUCHI YUSUKE
Abstract: A nickel alloy with high-temperature oxidation resistance and excellent creep strength is provided. The nickel alloy comprises 11.5%-11.9% by mass Cr, 25%-29% by mass Co, 3.4%-3.7% by mass Mo, 1.9%-2.1% by mass W, 3.9%-4.4% by mass Ti, 2.9%-3.2% by mass Al, 0.02%-0.03% by mass C, 0.01%-0.03% by mass B, 0.04%-0.06% by mass Zr, 2.1%-2.2% by mass Ta, 0.3%-0.4% by mass Hf, 0.5%-0.8% by mass Nb, with the remainder comprising Ni and unavoidable impurities; and includes carbide and boride precipitated in the crystal grains and in the crystal grain boundaries.
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Patent Agency Ranking
公开(公告)号：CA2728167C
公开(公告)日：2014-10-28
申请号：CA2728167
申请日：2009-06-26
Applicant: NAT INST FOR MATERIALS SCIENCE
Inventor： HARADA HIROSHI , KOIZUMI YUTAKA , KOBAYASHI TOSHIHARU , YOKOKAWA TADAHARU , SAKAMOTO MASAO , KAWAGISHI KYOKO , KITASHIMA TOMONORI , YEH AN-CHOU
IPC: C22C19/05
Abstract: Provided is an Ni-based single crystal superalloy wherein the ingredients have a composition containing, as ratio by mass, from 5.0% by mass to 7.0% by mass of Al, from 4.0% by mass to 8.0% by mass of Ta, from 0% by mass to 2.0% by mass of Mo, from 3.0% by mass to 8.0% by mass of W, from 3.0% by mass to 8.0% by mass of Re, from 0% by mass to 0.50% by mass of Hf, from 3.0% by mass to 6.0% by mass of Cr, from 0% by mass to 9.9% by mass of Co, from 1.0% by mass to 14.0% by mass of Ru, and from 0.1 % by mass to 4.0% by mass of Nb, with the balance of Ni and inevitable impurities. The alloy prevents TCP phase precipitation at high temperatures, therefore having improved strength at high temperatures and having oxidation resistance at high temperatures. Specifically, the invention is to provide a high-performance Ni-based single crystal superalloy having well balanced high-temperature strength and high-temperature oxidation resistance in practical use. The invention is also to provide the Ni-based single crystal superalloy having sufficient characteristics in point of "heat treatment window" that should not be overlooked in practical use.
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公开(公告)号：CA2749755A1
公开(公告)日：2010-07-22
申请号：CA2749755
申请日：2010-01-15
Applicant: NAT INST FOR MATERIALS SCIENCE
Inventor： HARADA HIROSHI , YOKOKAWA TADAHARU , KOIZUMI YUTAKA , KOBAYASHI TOSHIHARU , SAKAMOTO MASAO , KAWAGISHI KYOKO , OGUMA HIDATAKA , OKADA IKUO , TORIGOE TAIJI , TANEIKE MASAKI , ITO EISAKU , MASADA JUNICHIRO , TSUKAGOSHI KEIZO , KOYABU HIDEMICHI
Abstract: Disclosed is a Ni-based single crystal alloy which has a chemical composition comprising 8 to 12% by mass of Co, 5 to 7.5% by mass of Cr, 0.2 to 1.2% by mass of Mo, 5 to 7% by mass of W, 5 to 6.5% by mass of Al, 8 to 12% by mass of Ta, 0.01 to 0.2% by mass of Hf, 2 to 4% by mass of Re and 0.005 to 0.1% by mass of Si, with the remainder being Ni and unavoidable impurities, and is a single crystal.
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公开(公告)号：CA2387828C
公开(公告)日：2009-09-15
申请号：CA2387828
申请日：2002-05-29
Inventor： CHIKUGO KAZUYOSHI , AOKI YASUHIRO , HARADA HIROSHI , KAKIUCHI RYOJI , KOIZUMI YUTAKA , MASAKI SHOJU , YOKOKAWA TADAHARU , KOBAYASHI TOSHIHARU , ARAI MIKIYA
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 consisting of 5.0-7.0 wt% Al, 4.0-8.0 wt% Ta, 2.9-4.5 wt% Mo, 4.0-8.0 wt% W, 3.0-6.0 wt% R e, 0.01-0.50 wt% Hf, 2.0-5.0 wt% Cr, 0.1-9.5 wt% Co and 1.0-4.0 wt% Ru in term of its weight ratio, with the remainder consisting of Ni and unavoidable impurities.
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公开(公告)号：GB2439071A
公开(公告)日：2007-12-19
申请号：GB0720743
申请日：2007-10-23
Applicant: NAT INST FOR MATERIALS SCIENCE
Inventor： KOBAYASHI TOSHIHARU , KOIZUMI YUTAKA , HARADA HIROSHI , YOKOKAWA TADAHARU
Abstract: A Co-free Ni base superalloy comprising 1.0 to 10 wt.% Cr, 0.1 to 3.5 wt.% Mo, 7.5 to 10 wt.% W, 4.0 to 8 wt.% Al, & 12 wt.% at least one of Ta, Nb and Ti, 0 to 2.0 wt.% Hf, 0.1 to 5.0 wt.% Re and the balance of Ni and unavoidable impurities. This Co-free Ni base superalloy exhibits high structure stability over a prolonged period of time, excelling in high-temperature creep characteristics and facilitates maintenance against radiation contamination, etc., being suitable for use in a turbine blade or turbine vane of nuclear power generation, etc.
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公开(公告)号：DE60203562T2
公开(公告)日：2006-02-09
申请号：DE60203562
申请日：2002-05-29
Inventor： KOIZUMI YUTAKA , KOBAYASHI TOSHIHARU , YOKOKAWA TADAHARU , HARADA HIROSHI , AOKI YASUHIRO , ARAI MIKIYA , MASAKI SHOJU , KAKIUCHI RYOJI , CHIKUGO KAZUYOSHI
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 consisting of 5.0-7.0 wi% Al, 4.0-8.0 wt% Ta, 2.9-4.5 wt% Mo, 4.0-8.0 wt% W, 3.0-6.0 wt% Re, 0.01-0.50 wt% Hf, 2.0-5.0 wt% Cr, 0.1-15.0 wt% Co and 1.0-4.0 wt% Ru in terms of its weight ratio, with the remainder consisting of Ni and unavoidable impurities.
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