Forabejdningsmetoder for titanium og titaniumlegeringer

摘要

A method of refining the grain size of titanium and titanium alloys comprises heating a workpiece of a metallic material to a workpiece forging temperature 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 at the workpiece forging temperature; and multiple pass draw forging the workpiece at the workpiece forging temperature; 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.