公开(公告)号：US20210404036A1

公开(公告)日：2021-12-30

申请号：US16619003

申请日：2019-03-07

Applicant: MITSUBISHI POWER, LTD.

Inventor： Yuting WANG ,  Shinya IMANO ,  Shigenobu EGUCHI

IPC: C22C19/07 ,  C22C1/04 ,  B22F10/28 ,  B22F9/08

Abstract: 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.

公开(公告)号：US20210379658A1

公开(公告)日：2021-12-09

申请号：US17282448

申请日：2019-10-10

Applicant: JFE Steel Corporation

Inventor： Makoto Nakaseko ,  Shigeru Unami ,  Akio Kobayashi ,  Takuya Takashita

IPC: B22F9/08 ,  C22C45/02

Abstract: A production method for water-atomized metal powder includes: in a region in which the average temperature of a molten metal stream is higher than the melting point by 100° C. or more, spraying primary cooling water from a plurality of directions at a convergence angle of 10° to 25°, where the convergence angle is an angle between an impact direction on the molten metal stream of the primary cooling water from one direction and an impact direction on the molten metal stream of the primary cooling water from any other direction; and in a region in which 0.0004 seconds or more have passed after an impact of the primary cooling water and the average temperature of metal powder is the melting point or higher and (the melting point+50° C.) or lower, spraying secondary cooling water on the metal powder under conditions of an impact pressure of 10 MPa or more.

公开(公告)号：US11185920B2

公开(公告)日：2021-11-30

申请号：US16230093

申请日：2018-12-21

Applicant: Hammond Group, Inc.

Inventor： Terrence Hyde Murphy ,  William Peter Wilke, IV ,  Philip Michael Kowalski

IPC: B22F9/08 ,  C01G21/06 ,  H01M4/56 ,  C22C1/05 ,  B22F9/26 ,  H01M4/36 ,  H01M4/57 ,  H01M10/06 ,  C22C1/10

Abstract: According to one or more embodiments presently described, metal-containing particles may be made by a method that includes introducing a molten material into a reaction zone of a reactor system, passing a process gas into the reaction zone in a direction substantially tangential to a sidewall of the reaction zone, and contacting the process gas with the molten material in the reaction zone to form metal-containing particles. The molten material may be introduced into an upper portion of the reaction zone The reaction zone may include a substantially circular cross-section, and the molten metal may be introduced into the reaction zone in a laminar flow or as atomized particles.

公开(公告)号：US20210346954A1

公开(公告)日：2021-11-11

申请号：US17278121

申请日：2019-03-14

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Akihiko CHIBA ,  Takahiro KUDO ,  Youhei DAINO ,  Kenta AOYAGI

IPC: B22F9/04 ,  B22F9/08 ,  B22F10/28 ,  B33Y80/00 ,  B33Y70/00

Abstract: This invention provides, by simple mechanical treatment, a metal powder that generates no smoke phenomenon when laminating and shaping a metal object even when decreasing a preheating temperature. In the metal powder, a solidification structure including a dendritic structure on the surface of the metal powder has been flattened. The solidification structure including the dendritic structure has been flattened by mechanical treatment including collision treatment of the metal powder. The mechanical treatment is performed by heating the metal powder to 100° C. to 300° C. The metal powder is a metal powder that is heated to a predetermined temperature and whose capacitance component of a measured impedance becomes zero. This metal powder is a powder of a metal alloy produced by an atomization process or a plasma rotation electrode process. The metal alloy includes a nickel-based alloy, a cobalt-chrome alloy, an iron-based alloy, an aluminum alloy, and a titanium alloy.

公开(公告)号：US20210332465A1

公开(公告)日：2021-10-28

申请号：US17186556

申请日：2021-02-26

Applicant: QUESTEK INNOVATIONS LLC

Inventor： Amit Behera ,  Greg Olson

IPC: C22C38/54 ,  B33Y70/00 ,  C22C38/50 ,  C22C38/04 ,  C22C38/00 ,  B22F10/28 ,  B22F9/08 ,  B22F10/64

Abstract: Exemplary martensitic steel alloys may be particularly suited for additive manufacturing applications. Exemplary atomized alloy powders usable in additive manufacturing may include carbon, nickel, manganese, chromium, and the balance iron and incidental impurities. Exemplary steel alloys can be molybdenum free.

公开(公告)号：US20210323063A1

公开(公告)日：2021-10-21

申请号：US17295059

申请日：2018-11-20

Applicant: HUNAN TERRY NEW MATERIALS CO., LTD

Inventor： Jinsong HUANG ,  Xin JIN

IPC: B22F9/08

Abstract: A method for preparing metal powder by water atomization is disclosed. The method includes the steps of smelting, atomization, separation and drying, and the metal powder is freeze-dried in the drying step. Experiments show that freeze-drying is an important factor affecting oxygen content indexes of copper and copper alloys, and can be applied to the preparation of copper and copper alloy powder and even metal powder with low oxygen content. The method further considers all the details that may cause oxidation during the atomization process, and takes comprehensive measures to greatly reduce the probability of oxidization of copper and copper alloy powder, so that the oxygen content and oxidation of the water atomized powder are effectively reduced, and the water atomized powder is not easy to be oxidized during long-term storage.

公开(公告)号：US11148197B2

公开(公告)日：2021-10-19

申请号：US16117324

申请日：2018-08-30

Applicant: Seiko Epson Corporation

Inventor： Yasutoshi Hideshima ,  Hidefumi Nakamura ,  Hiroyoshi Otaka

IPC: B22F1/02 ,  B22F9/08 ,  B22F1/00 ,  C22C23/02 ,  B22D17/00 ,  B22D17/20 ,  B22F3/22 ,  C22C1/04 ,  B21J5/00

Abstract: A raw material for thixomolding includes a magnesium-based alloy powder which contains calcium in an amount of 0.2 mass % or more and 5 mass % or less and aluminum in an amount of 2.5 mass % or more and 12 mass % or less, wherein the magnesium-based alloy powder includes an oxide layer which has an average thickness of 30 nm or more and 100 nm or less and contains at least one of calcium and aluminum as an outermost layer. The average dendrite secondary arm spacing of crystal structures of the magnesium-based alloy powder is preferably 5 μm or less.

公开(公告)号：US11141791B2

公开(公告)日：2021-10-12

申请号：US16076764

申请日：2016-10-25

Applicant: HITACHI METALS, LTD.

Inventor： Tadashi Fujieda ,  Mamoru Hirota ,  Kosuke Kuwabara ,  Kinya Aota ,  Takahiko Kato ,  Akihiko Chiba ,  Yuichiro Koizumi ,  Kenta Yamanaka ,  Seiichi Watanabe

IPC: B22F10/20 ,  B22F3/24 ,  C22C30/00 ,  F04D29/02 ,  B33Y80/00 ,  B33Y10/00 ,  B22F1/00 ,  B22F3/16 ,  B22F9/08 ,  B22F3/105 ,  F04D29/28 ,  C22C19/05 ,  C22C19/07 ,  B33Y70/00

Abstract: An object of the invention is to provide: an alloy article that has excellent homogeneity in the alloy composition and microstructure as well as significant shape controllability, using an HEA with significant mechanical strength and high corrosion resistance; a method for manufacturing the alloy article; and a product using the alloy article. There is provided an alloy article comprising: Co, Cr, Fe, Ni, and Ti elements, each element in content of 5 to 35 atomic %; more than 0 atomic % to 8 atomic % of Mo %; and remainder substances of unavoidable impurities. And, ultrafine particles with an average diameter of 40 nm or less are dispersedly precipitated in matrix phase crystals of the alloy article.

公开(公告)号：US20210291275A1

公开(公告)日：2021-09-23

申请号：US17259901

申请日：2019-07-17

Applicant: HERAEUS ADDITIVE MANUFACTURING GMBH

Inventor： Moritz Stolpe ,  Jakob Fischer ,  Tim Protzmann ,  Michael Klosch-Trageser

IPC: B22F10/28 ,  B22F9/08

Abstract: The present invention relates to the use of a metal powder for additively manufacturing a shaped metal body by means of laser beam melting, wherein the metal is a metal of Group 11 of the periodic table of the elements or aluminium or an alloy or intermetallic phase of one of these metals and has an oxygen content of at least 2500 ppm by weight.

公开(公告)号：US20210285079A1

公开(公告)日：2021-09-16

申请号：US17260950

申请日：2018-06-12

Applicant: Oerlikon Metco (US) Inc.

Inventor： James Nathaniel Vecchio ,  Justin Lee Cheney

IPC: C22C38/38 ,  C22C38/36 ,  B22F9/08

Abstract: Disclosed herein are embodiments of a non-magnetic iron-based alloy. The alloy can contain high hard phase fractions providing for significant toughness and wear resistance. The alloy can have high austenite content and high toughness in some embodiments. Further, embodiments of the alloy can include a number of large or extremely hard particles.