Research and application of aerospace titanium castings

Development needs of aero engine high performance led development leads the high temperature titanium alloy, titanium alloy using the temperature gradually increased, from twentieth Century 50 to alloy as the representative, through to the alloy as the representative of the. At present, represents the international advanced high-temperature Titanium alloy sheet has USA, Britain, Russia and China. Composition and performance features of high temperature titanium alloy. The existence of titanium alloy problems and development direction at aerospace titanium castings present, except for some typical titanium alloy USA and Russia have been used in practice, research on titanium alloy with other countries is still in the research stage, Aerospace titanium castings type less, not unified and the flame retardant performance evaluation aerospace titanium castings method of high cost has hindered the development of titanium alloy. Through research, the author thinks that the development direction of titanium alloy is mainly: (1) standard evaluation of fire retardant properties of titanium alloy and method. Flame retardant performance evaluation of titanium alloy right is one of the key techniques of flame retardant titanium alloys, including the simulation methods and detection technology of combustion of titanium alloy. At present, the flame retardant performance evaluation method has no uniform standards, countries have adopted different methods to test. Flame retardant performance evaluation method of titanium alloy and therefore the formulation of a unified standard will effectively promote the national Titanium alloy valves exchange. (2) increase the mechanical aerospace titanium castings properties of titanium alloy. Compared with the titanium alloy, titanium alloy is poor mechanical properties, low working temperature. Research on how to improve the mechanical properties of this alloy for deeper. (3) reduce the cost of titanium alloy. Titanium alloy containing large amount of noble metal elements of V, resulting in higher costs, limiting its application. The domestic scholars have studied to replace V with Mo part of low price.