Invention Grant
- Patent Title: Manufacture of near-net shape titanium alloy articles from metal powders by sintering with presence of atomic hydrogen
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Application No.: US14739031Application Date: 2015-06-15
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Publication No.: US09777347B2Publication Date: 2017-10-03
- Inventor: Vladimir S. Moxson , Mykhailo Matviychuk , Vladimir Duz
- Applicant: ADVANCE MATERIAL PRODUCTS, INC.
- Main IPC: C22C1/04
- IPC: C22C1/04 ; B22F1/00 ; B22F3/16 ; B22F3/15 ; B22F3/17 ; B22F3/20 ; B22F3/18 ; C22C14/00

Abstract:
Disclosed herein is a process that includes: (a) providing a powder blend comprising (1) one or more hydrogenated titanium powders containing around 0.2 to around 3.4 weight % of hydrogen, and (2) one or more master alloys, comprising Al, V, or a combination thereof, (b) consolidating the powder blend by compacting the powder blend to provide a green compact, (c) heating the green compact to a temperature ranging from around 400° C. to around 900° C., thereby releasing the majority or all of the hydrogen from the hydrogenated titanium, and partially sintering the green compact without fully sintering it, to obtain a partially sintered article having a density of about 60% to about 85% of theoretical density, (d) sizing the partially sintered article at a temperature at or around room temperature to obtain an sized article having a density of about 80% to about 95% of theoretical density, (e) heating the sized article in vacuum thereby sintering the article to form a sintered dense compact having a density of 99% of theoretical density or higher.
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