	US 11,946,124 B2
	Fe-based alloy for melting-solidification shaping and metal powder
Takashi Yoshimoto, Nagoya (JP); and Kosuke Tomiyama, Nagoya (JP)
Assigned to DAIDO STEEL CO., LTD., Nagoya (JP)
Filed by DAIDO STEEL CO., LTD., Nagoya (JP)
Filed on Sep. 27, 2022, as Appl. No. 17/953,945.
Claims priority of application No. 2021-158883 (JP), filed on Sep. 29, 2021; and application No. 2022-098774 (JP), filed on Jun. 20, 2022.
Prior Publication US 2023/0106326 A1, Apr. 6, 2023
Int. Cl. C22C 38/12 (2006.01); B33Y 70/00 (2020.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/10 (2006.01)

CPC C22C 38/12 (2013.01) [B33Y 70/00 (2014.12); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/105 (2013.01)]

14 Claims

1. An Fe-based alloy for melting-solidification shaping consisting of:

18.0 mass %≤Co<25.0 mass %;

12.0 mass %≤Mo≤20.0 mass %;

0.2 mass %≤Mn≤5.0 mass %;

4.11 mass %≤Ni≤10.0 mass %; and

0 mass %≤Si≤1.0 mass %,

with the balance being Fe and unavoidable impurities,

and satisfying the following expressions (1) and (2), where [M] represents a content of an element M expressed in mass % basis,

58≤[Co]+3[Mo]≤95 (1)

A/B≥1.6 (2)

where

A=[Co]+[Ni]+3[Mn], and

B=[Mo]+[Si],

wherein, based on the Fe-based alloy for melting-solidification shaping comprising no Si, the expression (2) is calculated using [Si]=0.