Method for making an integral titanium alloy article having at least two distinct microstructural regions
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsDaniel Eylon, Francis H. Froes
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Abstract
A method for producing an integral titanium alloy article having at least two regions, each region having a distinct microstructure is provided. The method comprises heat treating one or more selected region(s) of the article at a temperature greater than the beta-transus temperature of the region(s), while simultaneously heat treating the remaining region(s) of the article at a temperature below the beta-transus temperature of the remaining region(s).
Claims16
A method for producing an integral titanium alloy article having at least two regions, each region having a distinct microstructure, which comprises the steps of
- (a) providing a suitable mold for the article;
- (b) introducing a first, non-hydrogenated titanium alloy in powder form into a first portion of said mold;
- (c) introducing a second, hydrogenated titanium alloy in powder, form into a second portion of said mold;
- (d) hot compacting said first and second alloys in said mold to produce a substantially fully dense article;
- (e) heating the resulting article to a temperature between the beta-transus temperatures of the two alloys;
- and,
- (f) cooling the thus-heated article.
A method for producing an integral titanium alloy article having at least two regions, each region having a distinct microstructure, which comprises the steps of
- (a) providing a suitable mold for said article;
- (b) introducing a first, non-hydrogenated titanium alloy in solid form into a first portion of said mold;
- (c) introducing a second, hydrogenated titanium alloy in powder form into a second portion of said mold;
- (d) hot compacting said first and second alloys in said mold to produce a substantially fully dense article;
- (e) heating the resulting article to a temperature between the beta-transus temperatures of the two alloys;
- and,
- (f) cooling the thus-heated article.
Dependencies are inferred from the claim text.