Titanium-base alloy compositions
AssigneeNorsk Titanium AS
InventorMartin Borlaug MATHISEN
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Abstract
The present invention relates to titanium alloy compositions suited for manufacturing components by additive manufacturing, resulting in components that exhibit relatively small prior β-grain sizes. The titanium alloy compositions comprises: from 2 to 7 wt % Al, from 1.5 to 6 wt % Mo, from 0.25 to 1.5 wt % Bi, unavoidable impurities, and a remaining wt % Ti which makes the total content of constituents in the titanium alloy composition sum up to 100 wt %, wherein the weight percentages are based on the total mass of the titanium alloy composition.
Claims20
A titanium alloy, comprising:
- from 2 to 7 wt % Al,
- one or more of Mo or V in a total amount of from 1.5 to 7 wt %,
- from 0.25 to 1.5 wt % Bi,
- and
- a wt % Ti that makes the total content of constituents in
- the titanium alloy composition sum up to 100 wt %,
- wherein the weight percentages are based on the total mass of the titanium alloy composition.
The titanium alloy according of 2, wherein the total content of the one or more elements selected from the group of beta eutectoid stabilizers comprising Fe, Cr, Co, Cu, Ni, Mn, W, B and Si, comprises from 0.8 to 1.0 wt %.
The titanium alloy according to any preceding claim, wherein at least one of the one or more of Mo or V comprises:
- molybdenum in the range from 2.9 to 3.1 wt %, or
- a combination of molybdenum and vanadium in the range from 3.4 to 3.6 wt %.
A welding wire, comprising:
- a titanium alloy comprising:
- from 2 to 7 wt % Al,
- one or more of Mo or V in a total amount of from 1.5 to 7 wt %,
- from 0.25 to 1.5 wt % Bi,
- and
- a wt % Ti that makes the total content of constituents in
- the titanium alloy composition sum up to 100 wt %,
- wherein the weight percentages are based on the total mass of the titanium alloy composition.
A method for manufacturing a three-dimensional component made of a titanium alloy, the method comprising:
- forming the three-dimensional component by an additive manufacturing process applying a titanium alloy, the titanium alloy comprising:
- from 2 to 7 wt % Al,
- one or more of Mo or V in a total amount of from 1.5 to 7 wt %,
- from 0.25 to 1.5 wt % Bi, and
- Ti,
- wherein the weight percentages are based on the total mass of the titanium alloy composition.
Dependencies are inferred from the claim text.