WORKING AND ANNEALING LIQUID PHASE SINTERED TUNGSTEN HEAVY ALLOY

摘要

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 300oC. 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 300oC, 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%.