US 2024/0392415 A1Published application

Ni Alloy Powder Suitable for Additive Manufacturing and Additively Manufactured Article Obtained Using Same

AssigneeSanyo Special Steel Co., Ltd.

InventorsYuka Miura, Toru Hagiya, Soichiro Maeda, Yoshikazu Aikawa

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Abstract

An Ni-based alloy powder having excellent high-temperature strength and cracking resistance, which is suitable for additive manufacturing, and the present disclosure provides an Ni-based alloy powder consisting of, in mass %: Ni: 40.00% to 70.00%; Cr: 15.00% to 25.00%; Mo: 0.10% to 12.00%; Nb: 3.00% to 7.00%; Al: 0.10% to 1.50%; Ti: 0.10% to 2.00%; Si: 0.01% to 0.40%; C: 0.001% to 0.15%; B: 0.0002% to 0.0040%; S: 0% to 0.002%; one or more of W and Co: 0% to 7.00% in total; and the balance consisting of Fe and inevitable impurities, wherein a value of strength parameter A1 is 200 or more, and a value of cracking resistance parameter A2 is 200 or less.

Claims2

Dependent claims

An Ni-based alloy powder consisting of, in mass %:

Ni:
40.00% to 70.00%;
Cr:
15.00% to 25.00%;
Mo:
0.10% to 12.00%;
Nb:
3.00% to 7.00%;
Al:
0.10% to 1.50%;
Ti:
0.10% to 2.00%;
Si:
0.01% to 0.40%;
C:
0.001% to 0.15%;
B:
0.0002% to 0.0040%;
S:
0% to 0.002%;
one or more of W and Co:
0% to 7.00% in total;
and
the balance consisting of Fe and inevitable impurities,
wherein
a value of A1 defined by the following formula is 200 or more:
A
⁢
1
=
5.1
[
C
]
+
0.3
[
Cr
]
+
3.5
[
Mo
]
+
2
.
9
[
W
]
+
0.4
[
Co
]
+
19.
[
Nb
]
+
9.4
[
Al
]
+
33.
[
Ti
]
+
1
⁢
2
⁢
0
⁢
.1
[
B
]
+
4
⁢
8
.
8
wherein [C], [Cr], [Mo], [W], [Co], [Nb], [Al], [Ti], and [B] represent contents of C, Cr, Mo, W, Co, Nb, Al, Ti, and B (mass %) in the Ni-based alloy powder, respectively, and
a value of A2 defined by the following formula is 200 or less:
A
⁢
2
=
2
⁢
7
⁢
0.4
[
C
]
+
0.5
[
Cr
]
+
0.6
[
Mo
]
+
0
⁢
.3
[
W
]
+
0.1
[
Co
]
+
10.
[
Nb
]
+
3
⁢
0.5
[
Al
]
+
15.8
[
Ti
]
+
2
⁢
0
⁢
0
⁢
9
⁢
.1
[
B
]
+
4
⁢
0
⁢
9
⁢
4
⁢
.3
[
S
]
+
6
⁢
2
.
1
wherein [C], [Cr], [Mo], [W], [Co], [Nb], [Al], [Ti], [B], and [S] represent contents of C, Cr, Mo, W, Co, Nb, Al, Ti, B, and S (mass %) in the Ni-based alloy powder, respectively.

171 more elements

Dependencies are inferred from the claim text.