Patent AU-2018422117-B2 (AU)
Title: Cobalt based alloy additive manufactured article, cobalt based alloy product, and method for manufacturing same
Inventor: IMANO SHINYA
IPC: C22C1/04
Filed: 2018-12-10
Granted: 2021-06-03
Abstract: P9Wm > TIH 
2020*6 18 H (18.06.2020) W O 2020/121367 Al 
WIPO I PCT 
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(54) Title: COBALT-BASED ALLOY LAMINATE MOLDED BODY, COBALT-BASED ALLOY PRODUCT, AND 
MANUFACTURING METHOD OF THESE 
AA Trhcc 
BB 
MC 
j AA Enlarged image 
BB MC-type carbide phase particles 
f CC Segregation cell 
DID DD Crystal 
grain boundary 
(57) Abstract: The purpose of the present invention is to provide a Co-based alloy laminate molded body which is a 
-Co-based alloy materialthat has the same or better mechanical characteristics as precipitation-strengthenedNi-based alloy 
materials, a Co-based alloy product based on said laminate molded body, and a manufacturing method of these. This 
CACo-based alloy product is characterized by having a chemical composition that contains 0.08-0.25 mass% C, less than or 
equal to 0.1 mass% B, 10-30 mass% Cr, Fe and Ni with Fe less than or equal to 5 mass% and the total less than or equal 
to 30 mass%, a total of 5-12 mass% W and/or Mo, a total of 0.5-2 mass% of Ti, Zr, Nb and Ta, 0.5 mass% or less Si, 
0.5 mass% or less Mn, and 0.003-0.04 mass% N, the remainder being Co and impurities, and in that the aforementioned
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(74) jJ_Wk: ° | f- -)A A j \ # A(POLAIRE 
LP.C.); ~1030025 *,-TI F - FX j 
4--T F 1 3 *1 1 - Tokyo (P).  
(81)tjt_($50tu\IRU) &Zt}o0IiYl{g 
Ahtbfi): AE, AG, AL, AM, AO, AT, AU, AZ, 
BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, 
CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, 
DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, 
HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, 
KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, 
MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, 
NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, 
QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, 
SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, 
UG, US, UZ, VC, VN, ZA, ZM, ZW.  
(84) L_(\t¶) JtoJU W 
AtWbbE): ARIPO (BW, GH, GM, KE, LR, LS, 
MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, 
ZW), .- L -5 7 (AM, AZ, BY, KG, KZ, RU, TJ, 
TM), - - F ' /A (AL, AT, BE, BG, CH, CY, CZ, 
DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, 
LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, 
SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, 
GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).  
product is a polycrystal with an average crystal grain size of 20-145 pm, and inside of the crystal grains of the polycrystal, 
MC-type carbide phase particles, which contain the aforementioned Ti, Zr, Nb and/or Ta, are precipitated with an average 
inter-particle distance of 0.15-1.5 pm.  
(57) R t : $:*Ht, tfttCNiAt$4 JZL_ t l . CoMa$t 4tUT Coat'l
o7Co Nit 0.08~0.251 %O5C, 0.14% 0WFOBt, 10~30(MK%OCrL, 
ht0.5~-21%OTi, Zr, NbtcJ fTa, 0.5M%tF0Sit, 0.5M%Lt-FOMnt, 0.003~0.041ki%O 
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