METASTABLE BETA-TITANIUM ALLOYS AND METHODS OF PROCESSING THE SAME BY DIRECT AGING

摘要

Metastable beta titanium alloys and methods of processing metastable ß-titanium alloys are disclosed. For example, certain non-limiting embodiments relate to metastable ß-titanium alloys, such as binary ß-titanium alloys comprising greater than 10 weight percent molybdenum, having tensile strengths of at least 150 ksi and elongations of at least 12 percent. Other non-limiting embodiments relate to methods of processing metastable ß-titanium alloys, and more specifically, methods of processing binary ß-titanium alloys comprising greater than 10 weight percent molybdenum, wherein the method comprises hot working and direct aging the metastable ß-titanium alloy at a temperature below the ß-transus temperature of the metastable ß-titanium alloy for a time sufficient to form a-phase precipitates in the metastable ß-titanium alloy. Articles of manufacture comprising binary ß-titanium alloys according to various non-limiting embodiments disclosed herein are also disclosed.