Fe-based alloy for melting-solidification shaping and metal powder
AssigneeDaido Steel Co., Ltd.
InventorsTakashi Yoshimoto, Kosuke Tomiyama
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Abstract
An Fe-based alloy for melting-solidification shaping including, in mass %: 18.0≤Co<25.0; 12.0≤Mo+W/2≤20.0; 0.2≤Mn≤5.0; 0.5≤Ni≤10.0; and 0≤Si≤1.0, with the balance being Fe and unavoidable impurities, and satisfying the following expressions (1) and (2) when [M] represents a content of an element M expressed in mass % basis, 58≤[Co]+3([Mo]+[W]/2)≤95 (1), A/B≥1.6 (2) where A=[Co]+[Ni]+3[Mn], and B=[Mo]+[W]/2+[Si], in which when the Fe-based alloy includes no Mo, the expressions (1) and (2) are calculated using [Mo]=0, when the Fe-based alloy includes no Si, the expression (2) is calculated using [Si]=0, and when the Fe-based alloy includes no W, the expressions (1) and (2) are calculated using [W]=0.
Claims14
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.
An Fe-based alloy for melting-solidification shaping consisting of:
- S≤0.05 mass %;
- P≤0.05 mass %;
- 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.
Dependencies are inferred from the claim text.