Titanium Processed by Rotary-Die Equal-Channel Angular Pressing

摘要

Rotary-Die Equal-Channel Angular Pressing (RD-ECAP) method was applied to commercially pure (cp) titanium in order to produce a fine-grained microstructure in cp-titanium. The method uses a rotary die, and cp-titanium can be repeatedly pressed in the die. The cp-titanium samples processed by RD-ECAP under the condition of 773K, 2.4mm/s punch speed, 4 passes have no crack. The samples have fine-grained microstructures under 5 μm.