PROCESSING ROUTES FOR TITANIUM AND TITANIUM ALLOYS

摘要

A rnethod f refining grain size in a workpiece conrising a metallic material selected from titanium and a titanium alloy, the method comprising: heating the workpiece to a workpiece forging temperature range within an alpha+beta phase field of the metallic material, wherein the workpiece comprises a cylindrical-like shape and a starting cross sectional dimension; upset forging the workpiece within the workpiece forging temperature range; and multiple pass draw forging the workpiece within the workpiece forging temperature range; wherein multiple pass draw forging comprises incrementally rotating the workpiece in a rotational direction followed by draw forging the workpiece; and wherein incrementally rotating and draw forging is repeated until the workpiece comprises the starting cross-sectional dimension. 25840394v ~~~~ RAW K/N~NtV~S d NN ./ t 4 t so W '> W /WKNT& Is>2