Mechanically alloyed oxide dispersion strengthened (ODS) Fe-Cr-Al alloy thin walled tubes and sheets, produced via powder processing and consolidation methodologies, are promising materials for eventual use at temperatures up to 1200 C in the power generation industry, far above the temperature capabilities of conventional alloys. The objectives of this program are to (1) increase creep-strength at temperature in ODS-alloy tube and liner components by 100% via, (2) preferential cross-roll flow forming and grain/particle fibering in the critical hoop direction. Recent studies in cross-rolled ODS-alloy sheets (produced from flattened tubes) indicate that transverse creep is significantly enhanced via controlled transverse grain fibering, and similar improvements are expected for cross-rolled tubes. The research program outlined here is iterative in nature and is intended to systematically (1) prescribe extrusion consolidation methodologies via detailed test matrices, (2) examine and identify post-extrusion forming methodologies to create hoop strengthened tubes, which will be (3) evaluated at 'inservice' loads at service temperatures and environments. This research program is to be conducted in collaboration with the DOE's Oak Ridge National Laboratory and the vested industrial partners Special Metals Corporation. In this second quarter of performance, program activities were initiated for Tasks 2, 3 and 4 and are reported herein. The completion of Task 1 ensures sufficient materials are now available for the remainder of this program.
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