Patent ID: 9048005
Filing Date: 2015-06-02
Classification: B22D,C22C,H01B

Abstract:
1. A method of manufacturing wire comprising in situ formed alumina particles in a fully dense combustion synthesized titanium aluminide matrix, the method comprising the steps of: a. mixing titania particles with molten aluminum to form a feedstock material; b. forming the feedstock material into a solid shape in the form of a continuous wire; c. introducing the feedstock material through a first opening into an atmospherically controlled, thermally insulated enclosed chamber; d. applying heat to the feedstock material in the chamber in an amount sufficient to initiate and maintain a titanium aluminide combustion synthesis reaction thereby producing a combustion synthesized titanium aluminide reaction product in the form of a continuous wire; e. applying heat externally to the chamber such that the combustion synthesized titanium aluminide wire is heated to at least 1150 degrees C. after it exits the chamber through a second opening; f. passing the heated combustion synthesized titanium aluminide wire through one or more wire drawing dies; and g. controlling a relationship between speeds of the feedstock material being introduced and the combustion synthesized titanium aluminide wire being passed through the dies such that a reaction front of the combustion synthesis reaction is maintained within the chamber and sufficient force is applied to the combustion synthesized titanium aluminide wire to reduce its cross section to a desired diameter by passage through the dies.