|About this Abstract
||Materials Science & Technology 2011
||MS&T'11 Poster Session
||194 Effect of Equal Channel Angular Pressing on the Thermal Stability, Microstructure and Mechanical Properties of ETP Copper
||OSCAR FABIÁN HIGUERA COBOS, JAIRO ALBERTO MUÑOZ BOLAÑOS, PABLO RODRIGUEZ CALVILLO, JOSE MARIA CABRERA MARRERO
|On-Site Speaker (Planned)
||JOSE MARIA CABRERA MARRERO
Samples of ETP copper were subjected to ECAP deformation using a Φ=90º and ψ= 37° die for up to 16 passes following route Bc. Differential scanning calorimetry was used to estimate the recrystallization temperature after each ECAP pass. The recrystallization temperature decreased until 7th ECAP passes, but slight increases in the 5th and the 8th passes were observed. Electron backscattering diffraction was used to evaluate microstructural behavior. Low angle misorientations were observed in the 1st pass, which indicate that a large quantity of subgrains is generated. In the 8th and 16th passes a large increase of misorientation θ≥20º was observed, which indicates formation of a more stable microstructure. Regarding the mechanical behavior, the main changes were introduced in the 1st pass but a gradual increment was observed in the consecutive ECAP passes.