Printable gamma prime superalloys
AssigneeOerlikon Metco (US) Inc.
InventorsJonathon BRACCI, Justin CHENEY, Kevin KAUFMANN
Life of this patent
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Abstract
A nickel-based alloy composition for additive manufacturing and an additive manufacturing component made from the nickel-based alloy, which includes: 36-89 wt. % nickel; 4-9 wt. % aluminum; 6-14 wt. % cobalt; 4-26 wt. % chromium; 2-5 wt. % tantalum; and 3-13 wt. % tungsten. The nickel-based alloy composition provides an additive manufacturing component having a cracking density of less than 4.0 cracks/mm2.
Claims20
A nickel-based alloy composition for additive manufacturing, comprising:
- 4-9 wt. % aluminum;
- 6-15 wt. % cobalt;
- 4-26 wt. % chromium;
- 2-5 wt. % tantalum;
- 3-13 wt. % tungsten;
- and
- balance nickel.
The nickel based alloy composition according to claim 9, wherein the composition of aluminum is 4.7-6.3 wt. %;
- the composition of cobalt is 7.8-10.6 wt. %;
- the composition of chromium is 7.0-9.4 wt. %;
- the composition of molybdenum is 5.1-6.9 wt. %;
- the composition of tantalum is 2.6-3.6 wt. %;
- the composition of titanium is 0.6-0.8 wt. %;
- and the composition of tungsten is 8.1-10.9 wt. %.
The nickel-based alloy composition according to claim 13, wherein the composition of aluminum is 4.7-6.3 wt. %;
- the composition of cobalt is 7.8-10.6 wt. %;
- the composition of chromium is 7.0-9.4 wt. %;
- the composition of molybdenum is 0.4-0.6 wt. %;
- the composition of niobium is 1.9-2.5 wt. %, the composition of tantalum is 2.6-3.6 wt. %;
- the composition of tungsten is 3.4-4.6 wt. %.
The nickel-based alloy composition according to claim 17, wherein the composition of aluminum is 4.7-6.3 wt. %;
- the composition of cobalt is 7.8-10.6 wt. %;
- the composition of chromium is 8.7-11.7 wt. %;
- the composition of molybdenum is 0.4-0.6 wt. %;
- the composition of tantalum is 2.6-3.6 wt. %;
- the composition of titanium is 0.6-0.8 wt. %;
- and the composition of tungsten is 6.4-8.6 wt. %.
An additive manufacturing component comprising:
- a nickel-based alloy composition;
- and
- having a hot cracking index of less than 2.0, a Scheil mushy zone of less than 250K, an Equilibrium mushy zone less than 100K, a gamma prime phase fraction at 1200K between 40 and 65 mol %, a gamma prime formation temperature less than 1500K, and a TCP formation temperature between 900K and 1600K.
An additive manufacturing component comprising:
- a nickel-based alloy composition;
- and
- having a crack density of less than 1.50 mm/mm2 and a hardness between 350 HV0.3 and 560 HV0.3.
Dependencies are inferred from the claim text.