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US 2023/0063455 A1Published application
3d printable hard ferrous metallic alloys for powder bed fusion
AssigneeMacLean-Fogg Company
InventorsCharles D. TUFFILE, Harald LEMKE
Life of this patent
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Abstract
Alloy compositions for 3D metal printing procedures which provide metallic parts with high hardness, tensile strengths, yield strengths, and elongation. The alloys include Fe, Cr and Mo and at least three or more elements selected from C, Ni, Cu, Nb, Si and N. As built parts indicate a tensile strength of at least 1000 MPa, yield strength of at least 640 MPa, elongation of at least 3.0% and hardness (HV) of at least 375.
Claims20
An alloy for 3D printing of a metallic part, the alloy comprising:
- C is present at 0.1 to 0.35 wt. %, based on the total weight of the alloy,
- Cr is present at 10.0 wt. % to 19.0 wt. %, based on the total weight of the alloy,
- Mo is present at 0.5 wt. % to 3.0 wt. %, based on the total weight of the alloy;
- and
- at least two elements from the group consisting of Ni, Cu, Nb, Si and,
- wherein if present Ni is present at 0 to 5.0 wt. %, based on the total weight of the alloy,
- wherein if present Cu is present at 0 to 5.0 wt. %, based on the total weight of the alloy,
- wherein if present Nb is present at 0 to 1.0 wt. %, based on the total weight of the alloy,
- wherein if present Si is present at 0 to 1.0 wt. %, based on the total weight of the alloy, and
- wherein if present N is present at 0 to 0.25 wt. %, based on the total weight of the alloy;
- and
- the balance of the alloy composition containing Fe.
9 more elements
A method of producing a metal alloy, the method comprising:
- supplying an alloy comprising:
- C at 0.1 to 0.35 wt. %, based on the total weight of the alloy,
- Cr at 10.0 wt. % to 19.0 wt. %, based on the total weight of the alloy,
- Mo at 0.5 wt. % to 3.0 wt. %, based on the total weight of the alloy;
- and
- at least two elements from the group consisting of Ni, Cu, Nb, Si and,
- wherein if present Ni is present at 0 to 5.0 wt. %, based on the total weight of the alloy,
- wherein if present Cu is present at 0 to 5.0 wt. %, based on the total weight of the alloy,
- wherein if present Nb is present at 0 to 1.0 wt. %, based on the total weight of the alloy,
- wherein if present Si is present at 0 to 1.0 wt. %, based on the total weight of the alloy, and
- wherein if present N is present at 0 to 0.25 wt. %, based on the total weight of the alloy;
- and
- the balance of the alloy composition containing Fe;
- melting the alloy;
- atomizing the melted alloy to form a powder metal alloy.
12 more elements
Dependencies are inferred from the claim text.