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公开(公告)号：EP3256613A1
公开(公告)日：2017-12-20
申请号：EP16706481.5
申请日：2016-02-08
申请人： ATI Properties LLC
摘要： A method of producing an article selected from a titanium article and a titanium alloy article comprises melting feed materials with a source of hydrogen to form a molten heat of titanium or a titanium alloy, and casting at least a portion of the molten heat to form a hydrogenated titanium or titanium alloy ingot. The hydrogenated ingot is deformed at an elevated temperature to form a worked article comprising a cross-sectional area smaller than a cross-sectional area of the hydrogenated ingot. The worked article is dehydrogenated to reduce a hydrogen content of the worked article. In certain non-limiting embodiments of the method, the dehydrogenated article comprises an average α-phase particle size of less than 10 microns in the longest dimension.
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公开(公告)号：EP2971200B1
公开(公告)日：2018-04-11
申请号：EP14710482.2
申请日：2014-02-28
申请人： ATI Properties LLC
发明人： THOMAS, Jean-Philippe, A. , MINISANDRAM, Ramesh, S. , FORBES JONES, Robin, M. , MANTIONE, John, V. , BRYAN, David, J.
摘要： One embodiment of a method of refining alpha-phase grain size in an alpha-beta titanium alloy comprises working an alpha-beta titanium alloy at a first working temperature within a first temperature range in the alpha-beta phase field of the alpha-beta titanium alloy. The alloy is slow cooled from the first working temperature. On completion of working at and slow cooling from the first working temperature, the alloy comprises a primary globularized alpha-phase particle microstructure. The alloy is worked at a second working temperature within a second temperature range in the alpha-beta phase field. The second working temperature is lower than the first working temperature. The is worked at a third working temperature in a third temperature range in the alpha-beta phase field. The third working temperature is lower than the second working temperature. After working at the third working temperature, the titanium alloy comprises a desired refined alpha-phase grain size.
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