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公开(公告)号：US11566313B2
公开(公告)日：2023-01-31
申请号：US16058497
申请日：2018-08-08
发明人： Atsuo Ota , Shinya Imano
摘要： Provided is a method for manufacturing an Ni-based alloy member in which the equilibrium amount of γ′ phase precipitation at 700° C. is from 30 to 70 volume %. The method includes the steps of preparing an Ni-based alloy powder having a predetermined chemical composition; forming a precursor body wherein an average grain diameter of the γ phase grains is 50 μm or less, by using the Ni-based alloy powder; and heating the precursor body to a temperature at least the γ′ phase solvus temperature and subsequently slow-cooling the heated precursor body from the temperature to a temperature at least 100° C. lower than the γ′ phase solvus temperature at a cooling rate of 100° C./h or lower. There is obtained a softened body in that the γ′ phase particles of at least 20 volume % precipitate between/among the γ phase grains having an average grain diameter of 50 μm or less.
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公开(公告)号：US11602789B2
公开(公告)日：2023-03-14
申请号：US16624658
申请日：2018-12-07
发明人： Takashi Shibayama , Shigenobu Eguchi , Yuting Wang , Shinya Imano
摘要： A metal-powder producing apparatus includes a spray chamber, and a plurality of spray nozzles that liquid-spray a melted metal into the spray chamber. Each of the plurality of spray nozzles includes: a liquid nozzle that allows the melted metal to flow down into the spray chamber; and a gas-jet nozzle that has a plurality of gas-jet holes arranged around the liquid nozzle and causing a gas fluid to collide with the melted metal having flowed down from the liquid nozzle.
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公开(公告)号：US11325189B2
公开(公告)日：2022-05-10
申请号：US16582517
申请日：2019-09-25
发明人： Shinya Imano , Yuting Wang , Shigenobu Eguchi , Yoshitaka Uemura , Norihiko Motoyama , Takanao Komaki
IPC分类号： C22C19/07 , B22F10/20 , C22F1/10 , B22F3/24 , B22F5/04 , B33Y80/00 , C22C1/10 , C22C1/04 , B22F1/00
摘要： There is provided an additive manufactured (AM) article formed of a Co based alloy having a composition comprising: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 30% or less in total of Fe and Ni, the Fe being 5% or less; 5-12% in total of W and/or Mo; 0.5-2% in total of Ti, Zr, Nb and Ta; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; and the balance being Co and impurities. The AM article comprises crystal grains with an average size of 10-100 μm. In the crystal grains, segregation cells with an average size of 0.15-1.5 μm are formed, in which components constituting an MC type carbide phase comprising the Ti, Zr, Nb and/or Ta are segregated in boundary regions of the cells, and/or grains of the MC type carbide phase are precipitated at an average intergrain distance of 0.15-1.5 μm.
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公开(公告)号：US11613795B2
公开(公告)日：2023-03-28
申请号：US16619003
申请日：2019-03-07
发明人： Yuting Wang , Shinya Imano , Shigenobu Eguchi
IPC分类号： C22C19/07 , B22F10/28 , B22F3/24 , B22F5/04 , C22C1/04 , C22F1/10 , B22F10/36 , B22F10/64 , B22F10/38 , B22F9/08 , B22F1/05
摘要： There is provided a cobalt-based alloy product comprising: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 5% or less Fe and 30% or less Ni, the total amount of Fe and Ni being 30% or less; W and/or Mo, the total amount of W and Mo being 5-12%; at least one of Ti, Zr, Hf, V, Nb and Ta, the total amount of Ti, Zr, Hf, V, Nb and Ta being 0.5-2%; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; and the balance being Co and impurities. The product is a polycrystalline body of matrix phase crystal grains. In the matrix phase crystal grains, post-segregation cells with an average size of 0.13-2 μm are formed, wherein components constituting an MC type carbide phase comprising Ti, Zr, Hf, V, Nb and/or Ta are segregated along boundary regions of the post-segregation cells.
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公开(公告)号：USD982628S1
公开(公告)日：2023-04-04
申请号：US29770236
申请日：2021-02-10
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公开(公告)号：USD982627S1
公开(公告)日：2023-04-04
申请号：US29770235
申请日：2021-02-10
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7.发明申请公开(公告)号：US20230070692A1
公开(公告)日：2023-03-09
申请号：US17898986
申请日：2022-08-30
发明人： Atsuo Ota , Shinya Imano
摘要： There is provided a Co-based alloy material, having a chemical composition including: Al of 0.1 to 10 mass %; W of 3 to 45 mass %, the total content of Al and W being 50 mass % or less; O of 0.007 to 0.05 mass %; and the balance being Co and impurities, wherein in γ phase crystal grains as a matrix phase of the Co-based alloy material, segregation cells within an average size of 0.15 to 1.5 μm are formed, wherein in the segregation cells, γ′ phase grains within a size of 0.01 to 0.5 μm including Co, Al and W are dispersively precipitated, and wherein on boundary regions of the segregation cells and grain boundaries of the γ phase crystal grains, μ phase grains within a size of 0.005 to 2 μm including Co and W are dispersively precipitated.
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公开(公告)号：US11499208B2
公开(公告)日：2022-11-15
申请号：US16620901
申请日：2019-03-07
发明人： Yuting Wang , Shinya Imano , Shigenobu Eguchi
摘要： There is provided a cobalt-based alloy product comprising: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 5% or less Fe and 30% or less Ni, the total amount of Fe and Ni being 30% or less; W and/or Mo, the total amount of W and Mo being 5-12%; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; 0.5 to 2 mass % of an M component being a transition metal other than W and Mo and having an atomic radius of more than 130 pm; and the balance being Co and impurities. The impurities include 0.5% or less Al and 0.04% or less O. The product is a polycrystalline body of matrix phase crystal grains. In the matrix phase crystal grains, segregation cells with an average size of 0.13-2 μm are formed, in which the M component is segregated in boundary regions of the segregation cells.
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公开(公告)号：US11427893B2
公开(公告)日：2022-08-30
申请号：US16618971
申请日：2019-03-07
发明人： Yuting Wang , Shinya Imano
摘要： A Co-based alloy heat exchanger comprises: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 5% or less Fe and 30% or less Ni, the total amount of Fe and Ni being 30% or less; W and/or Mo, the total amount of W and Mo being 5-12%; Ti, Zr, Nb and Ta, the total amount of Ti, Zr, Nb and Ta being 0.5-2%; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; and the balance being Co and impurities. The impurities include 0.5% or less Al, and 0.04% or less O. The heat exchanger is a polycrystalline body of matrix crystal grains with an average size of 5-100 μm. In the matrix crystal grains, segregation cells with an average size of 0.13-2 μm are formed, wherein components constituting an MC type carbide comprising Ti, Zr, Nb and/or Ta are segregated in boundary regions of the segregation cells.
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10.发明授权公开(公告)号：US11414728B2
公开(公告)日：2022-08-16
申请号：US16620719
申请日：2019-03-07
发明人： Yuting Wang , Shinya Imano , Shigenobu Eguchi
IPC分类号： C22C19/07 , B33Y70/00 , B33Y80/00 , C22C1/04 , B33Y10/00 , B22F5/04 , F01D5/28 , B22F10/28 , B22F10/64 , B33Y40/20 , B22F10/36 , F28F21/08
摘要： There is provided a cobalt-based alloy product comprising: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 5% or less Fe and 30% or less Ni, the total amount of Fe and Ni being 30% or less; W and/or Mo, the total amount of W and Mo being 5-12%; at least one of Ti, Zr, Hf, V, Nb and Ta, the total amount of Ti, Zr, Hf, V, Nb and Ta being 0.5-2%; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; and the balance being Co and impurities. The cobalt-based alloy product is a polycrystalline body of matrix phase crystal grains, wherein MC type carbide phase grains are dispersively precipitated in the matrix phase crystal grains at an average intergrain distance of 0.13 to 2 μm and M23C6 type carbide phase grains are precipitated on grain boundaries of the matrix phase crystal grains.
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