Powdered Titanium Alloy Composition and Article Formed Therefrom
A titanium alloy composition that includes, other than impurities, about 7.0 to about 9.0 percent by weight vanadium (V), about 3.0 to about 4.5 percent by weight aluminum (Al), about 0.8 to about 1.5 percent by weight iron (Fe), about 0.14 to about 0.22 percent by weight oxygen (O), optionally about 0.8 to about 2.4 percent by weight chromium (Cr), and the balance titanium.
1 . A titanium alloy consisting essentially of:
about 7.0 to about 9.0 percent by weight vanadium;
about 3.0 to about 4.5 percent by weight aluminum;
about 0.8 to about 1.5 percent by weight iron;
about 0.14 to about 0.22 percent by weight oxygen;
optionally about 0.8 to about 2.4 percent by weight chromium; and
balance titanium.
2 . The titanium alloy of claim 1 wherein said vanadium is present at about 7.0 to about 8.5 percent by weight.
3 . The titanium alloy of claim 1 wherein said vanadium is present at about 7.5 to about 9.0 percent by weight.
4 . The titanium alloy of claim 1 wherein said aluminum is present at about 3.5 to about 4.5 percent by weight.
5 . The titanium alloy of claim 1 wherein said aluminum is present at about 3.0 to about 4.0 percent by weight.
6 . The titanium alloy of claim 1 wherein said iron is present at about 0.9 to about 1.5 percent by weight.
7 . The titanium alloy of claim 1 wherein said iron is present at about 0.8 to about 1.3 percent by weight.
8 . The titanium alloy of claim 1 wherein said oxygen is present at about 0.15 to about 0.22 percent by weight.
9 . The titanium alloy of claim 1 wherein said oxygen is present at about 0.14 to about 0.20 percent by weight.
10 . The titanium alloy of claim 1 wherein said chromium is optionally present at about 1.8 to about 2.4 percent by weight.
11 . The titanium alloy of claim 1 wherein:
said vanadium is present at about 7.0 to about 8.5 percent by weight;
said aluminum is present at about 3.5 to about 4.5 percent by weight;
said iron is present at about 0.9 to about 1.5 percent by weight; and
said oxygen is present at about 0.15 to about 0.22 percent by weight.
12 . The titanium alloy of claim 11 wherein said optional chromium is not present.
13 . The titanium alloy of claim 1 wherein:
said vanadium is present at about 7.5 to about 9.0 percent by weight;
said aluminum is present at about 3.0 to about 4.0 percent by weight;
said iron is present at about 0.8 to about 1.3 percent by weight;
said oxygen is present at about 0.14 to about 0.20 percent by weight; and
said chromium is present at about 0.8 to about 2.4 percent by weight.
14 . The titanium alloy of claim 1 in powdered form.
15 . The titanium alloy of claim 14 wherein said powdered form consists of a mixture of at least two different powder compositions.
16 . The titanium alloy of claim 15 wherein said mixture comprises a titanium powder and a master alloy powder.
17 . The titanium alloy of claim 14 wherein said powdered form consists of a plurality of powder particles, and wherein each powder particle of said plurality of powder particles has substantially the same composition.
18 . The titanium alloy of claim 14 wherein said powdered form consists of a plurality of substantially spherical powder particles.
19 . The titanium alloy of claim 18 wherein said plurality of substantially spherical powder particles have a substantially uniform particle size.
20 . An article formed from the titanium alloy of claim 1 .
21 . An article formed from the titanium alloy of claim 14 .
22 . A method for manufacturing an article comprising:
compacting said powdered form titanium alloy of claim 14 to form a shaped mass; and
sintering said shaped mass.
23 . The method of claim 22 wherein said compacting comprises metal injection molding.
24 . The method of claim 22 further comprising subjecting said sintered shaped mass to hot isostatic pressing.
25 . The method of claim 22 further comprising solution treating and aging said sintered shaped mass.
26 . The titanium alloy of claim 1 in powdered form and consisting essentially of:
about 7.0 to about 8.5 percent by weight vanadium;
about 3.5 to about 4.5 percent by weight aluminum;
about 0.9 to about 1.5 percent by weight iron;
about 0.15 to about 0.22 percent by weight oxygen; and
balance titanium.
27 . The titanium alloy composition of claim 26 consisting of a plurality of powder particles, and wherein each powder particle of said plurality of powder particles has substantially the same composition.
28 . The titanium alloy composition of claim 26 consisting of a mixture of at least two different powder compositions.
29 . The titanium alloy composition of claim 28 wherein said mixture comprises a titanium powder and a master alloy powder.
30 . An article formed from the titanium alloy composition of claim 26 .
31 . The titanium alloy of claim 1 in powdered form and consisting essentially of:
about 7.5 to about 9.0 percent by weight vanadium;
about 3.0 to about 4.0 percent by weight aluminum;
about 0.8 to about 2.4 percent by weight chromium;
about 0.8 to about 1.3 percent by weight iron;
about 0.14 to about 0.20 percent by weight oxygen; and
balance titanium.
32 . The titanium alloy composition of claim 31 wherein said chromium is present at about 1.8 to about 2.4 percent by weight.
33 . The titanium alloy composition of claim 31 consisting of a plurality of powder particles, and wherein each powder particle of said plurality of powder particles has substantially the same composition.
34 . The titanium alloy composition of claim 31 consisting of a mixture of at least two different powder compositions.
35 . The titanium alloy composition of claim 34 wherein said mixture comprises a titanium powder and a master alloy powder.
36 . An article formed from the titanium alloy composition of claim 31 .