|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Ultrafine-grained and Heterostructured Materials (UFGH XII)
||Microstructure Control in Metal Composites Processed by Equal Channel Angular Extrusion
||Charles Borenstein, Brady G. Butler, James D. Paramore, Robert E. Barber, Zachary S. Levin, Karl T. Hartwig, Michael J. Demkowicz
|On-Site Speaker (Planned)
We investigated the microstructures achievable by equal channel angular extrusion (ECAE) of two-phase metal composites with face centered cubic (FCC) and body centered cubic (BCC) constituents, specifically tantalum and tungsten in copper-based matrices. Samples were prepared over a range of compositions by powder consolidation. A variety of extrusion sequences were explored using a novel ECAE tool capable of low speed, isothermal extrusions at up to 600°C. The morphology and mechanical properties of the resulting microstructures were characterized. We will discuss the implications of our work for processing bulk multiphase composites with novel properties, with regards to potential processing parameters.
||Powder Materials, Composites,