公开(公告)号：WO2021168190A1

公开(公告)日：2021-08-26

申请号：PCT/US2021/018691

申请日：2021-02-19

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： ELLER, Michael R. ,  SCHUENGEL, Kevin J. ,  GAMBINO, Mark S.

IPC: B21C25/02 ,  B21C23/00 ,  B21C23/04 ,  B21C23/21

Abstract: A friction stir processing system can include a rotatable die assembly. The rotatable die assembly can include a die body and a plurality of die segments. The die body includes a die base and a die stem. The die stem extends axially from the die base, the die stem defines an extrusion cavity, and the die body is formed from a first material. The plurality of die stems are coupled to the die stem. The plurality of die segments are disposed around the extrusion cavity to collectively form a die surface opposite to the die base. The plurality of die segments are formed from a different material than the die body.