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1. WO2020179083 - COBALT-BASED ALLOY PRODUCT AND METHOD FOR PRODUCING SAME

Publication Number WO/2020/179083
Publication Date 10.09.2020
International Application No. PCT/JP2019/009208
International Filing Date 07.03.2019
IPC
C22C 19/07 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
19Alloys based on nickel or cobalt
07based on cobalt
B22F 1/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
B33Y 10/00 2015.1
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
10Processes of additive manufacturing
B33Y 50/02 2015.1
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
50Data acquisition or data processing for additive manufacturing
02for controlling or regulating additive manufacturing processes
C22F 1/10 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS
1Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
10of nickel or cobalt or alloys based thereon
F28F 21/08 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
21Constructions of heat-exchange apparatus characterised by the selection of particular materials
08of metal
CPC
B22F 1/05
B22F 10/20
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
10Additive manufacturing of workpieces or articles from metallic powder
20Direct sintering or melting
B22F 10/28
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
10Additive manufacturing of workpieces or articles from metallic powder
20Direct sintering or melting
28Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 2003/1054
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
10Sintering only
105by using electric current ; other than for infra-red radiant energy; , laser radiation or plasma
1054by microwave
B22F 2003/248
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
24After-treatment of workpieces or articles
248Thermal after-treatment
B22F 2301/15
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
2301Metallic composition of the powder or its coating
15Nickel or cobalt
Applicants
  • 三菱日立パワーシステムズ株式会社 MITSUBISHI HITACHI POWER SYSTEMS, LTD. [JP]/[JP]
Inventors
  • 王 玉艇 WANG Yuting
  • 今野 晋也 IMANO Shinya
  • 江口 滋信 EGUCHI Shigenobu
Agents
  • ポレール特許業務法人 POLAIRE I.P.C.
Priority Data
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) COBALT-BASED ALLOY PRODUCT AND METHOD FOR PRODUCING SAME
(FR) PRODUIT D'ALLIAGE À BASE DE COBALT ET PROCÉDÉ DE PRODUCTION ASSOCIÉ
(JA) コバルト基合金製造物およびその製造方法
Abstract
(EN) The purpose of the present invention is to provide: a Co-based alloy product having mechanical properties that are equivalent or superior to those of precipitation-hardened Ni-based alloy materials; and a method for producing the Co-based alloy product. The Co-based alloy product according to the present invention has a chemical composition which contains 0.08 to 0.25% by mass of C, 0.1% by mass or less of B and 10 to 30% by mass of Cr, also contains 5% by mass or less of Fe and 30% by mass or less of Ni wherein the total amount of Fe and Ni is 30% by mass or less, also contains W and/or Mo wherein the total amount of W and Mo is 5 to 12% by mass inclusive, also contains at least one element selected from Ti, Zr, Hf, V, Nb and Ta in a total amount of 0.5 to 2% by mass inclusive, and also contains 0.5% by mass or less of Si, 0.5% by mass or less of Mn and 0.003 to 0.04% by mass of N, with the remainder made up by Co and impurities, wherein the impurities contain 0.5% by mass or less of Al and 0.04% by mass or less of O. The product is characterized in that the product is a polycrystal body of matrix phase crystals, post-segregation cells which have an average size of 0.13 to 2 μm inclusive are formed in crystal grains of the polycrystal body, and MC-type carbide phase grains each containing the Ti, the Zr, the Hf, the V, the Nb and/or the Ta are dispersed and deposited on the boundaries of the post-segregation cells.
(FR) La présente invention vise à fournir : un produit d'alliage à base de Co ayant des propriétés mécaniques équivalentes ou supérieures à celles de matériaux d'alliage à base de Ni durcis par précipitation ; et un procédé de production du produit d'alliage à base de Co. Le produit d'alliage à base de Co selon la présente invention a une composition chimique qui contient de 0,08 à 0,25 % en masse de C, 0,1 % en masse ou moins de B et de 10 à 30 % en masse de Cr ; il contient également 5 % en masse ou moins de Fe et 30 % en masse ou moins de Ni, la quantité totale de Fe et de Ni étant de 30 % en masse ou moins ; il contient également du W et/ou du Mo, la quantité totale de W et de Mo étant de 5 à 12 % en masse inclus ; il contient également au moins un élément choisi parmi les Ti, Zr, Hf, V, Nb et Ta en une quantité totale de 0,5 à 2 % en masse inclus, et contient également 0,5 % en masse ou moins de Si, 0,5 % en masse ou moins de Mn et 0,003 à 0,04 % en masse de N, le reste étant constitué de Co et d'impuretés, les impuretés contenant 0,5 % en masse ou moins d'Al et 0,04 % en masse ou moins de O. Le produit est caractérisé en ce que le produit est un corps polycristallin de cristaux de phase matricielle, des cellules de post-ségrégation qui ont une taille moyenne de 0,13 à 2 µm inclus sont formées dans des grains cristallins du corps polycristallin, et des grains de phase de carbure de type MC contenant chacun du Ti, du Zr, de l'Hf, du V, du Nb et/ou du Ta étant dispersés et déposés sur les limites des cellules post-ségrégation.
(JA) 本発明は、析出強化Ni基合金材と同等以上の機械的特性を有するCo基合金製造物およびその製造方法を提供することを目的とする。本発明に係るCo基合金製造物は、0.08~0.25質量%のCと、0.1質量%以下のBと、10~30質量%のCrとを含み、Feを5質量%以下でNiを30質量%以下で含み、FeおよびNiの合計が30質量%以下であり、Wおよび/またはMoを含み、WおよびMoの合計が5質量%以上12質量%以下であり、Ti、Zr、Hf、V、NbおよびTaの1種以上を合計0.5質量%以上2質量%以下で含み、0.5質量%以下のSiと、0.5質量%以下のMnと、0.003~0.04質量%のNとを含み、残部がCoと不純物とからなり、前記不純物は、0.5質量%以下のAlと、0.04質量%以下のOとを含む、化学組成を有し、前記製造物は、母相結晶の多結晶体であり、前記多結晶体の結晶粒内には、平均サイズが0.13μm以上2μm以下のポスト偏析セルが形成しており、該ポスト偏析セルの境界上に、前記Ti、前記Zr、前記Hf、前記V、前記Nbおよび/または前記Taを含むMC型炭化物相粒子が分散析出している、ことを特徴とする。
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