Patent ID: 6136105
Filing Date: 2000-10-24
Classification: B22F,C22C,C22F,F42B

Abstract:
A method of imparting strength, ductility, and fracture toughness to a refractory metal alloy workpiece having an initial cross-sectional area comprising the steps of:(i) subjecting said alloy workpiece to a first working step at a temperature between ambient and 300.degree. C. comprising at least one pass that reduces said initial cross-sectional area of said workpiece;(ii) annealing said workpiece subsequent to said at least one pass; and(iii) subjecting said workpiece to a final working step comprising at least one pass conducted at a temperature between ambient and 300.degree. C., said final working step further reducing the cross-sectional area of said workpiece such that a total reduction in said initial cross-sectional area of said workpiece after said final working step is 40%-75%.