US 12,377,466 B2
Ni-based corrosion resistant alloy powder for additive manufacturing and manufacturing method of additive manufacturing product using said powder
Yuzo Daigo, Tokyo (JP); and Katsuo Sugahara, Tokyo (JP)
Assigned to Proterial, Ltd., Tokyo (JP)
Appl. No. 17/434,423
Filed by Proterial, Ltd., Tokyo (JP)
PCT Filed Feb. 12, 2020, PCT No. PCT/JP2020/005414
§ 371(c)(1), (2) Date Aug. 27, 2021,
PCT Pub. No. WO2020/179388, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. 2019-038162 (JP), filed on Mar. 4, 2019.
Prior Publication US 2022/0143690 A1, May 12, 2022
Int. Cl. B22F 1/052 (2022.01); B22F 1/00 (2022.01); B22F 10/28 (2021.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C22C 19/05 (2006.01)
CPC B22F 10/28 (2021.01) [B22F 1/00 (2013.01); B22F 1/052 (2022.01); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C22C 19/055 (2013.01); C22C 19/056 (2013.01); B22F 2301/15 (2013.01); B22F 2304/10 (2013.01)] 7 Claims
 
1. A Ni-based corrosion resistant alloy powder for additive manufacturing, composed of a powder of a Ni-based alloy having a component composition including, in mass %,
Cr: 14.5 to 24.5%,
Mo: 12.0 to 23.0%,
Fe: 0.01 to 7.00%,
Co: 0.001 to 2.500%,
Ta: 1.0 to 2.5%,
Mg: 0.010% or less,
N: 0.040% or less,
Mn: 0.001 to 0.50%,
Si: 0.001 to 0.200%,
Al: more than 0 and 0.50% or less,
Ti: 0.001 to 0.500%,
Cu: 0.250% or less,
V: 0.001 to 0.300%,
B: 0.0001 to 0.0050%,
Zr: 0.0001 to 0.0200%, and
O: 0.0010 to 0.0300%,
with the remainder being Ni and unavoidable impurities,
wherein C, S and P are contained as the unavoidable impurities (C: less than 0.05%, S: less than 0.01% and P: less than 0.01%),
wherein, in a cumulative distribution curve showing the relationship between a particle size and a volume cumulative from a small particle size side obtained by a laser diffraction method,
a particle size d10 corresponding to a cumulative frequency of 10 volume % of the powder is 15 μm or more and 100 μm or less,
a particle size d50 corresponding to a cumulative frequency of 50 volume % of the powder is 30 μm or more and 250 μm or less, and
a particle size d90 corresponding to a cumulative frequency of 90 volume % of the powder is 50 μm or more and 480 μm or less.