| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation Induced Microstructural Modification
|
| Presentation Title |
Effect of Cryogenic Equal Channel Angular Pressing on Mechanical Behavior and Microstructure of Pure Copper |
| Author(s) |
Pedro Fernandes Oliveira, Danielle Magalhães, Andrea Kliauga, Vitor Sordi |
| On-Site Speaker (Planned) |
Pedro Fernandes Oliveira |
| Abstract Scope |
The aim of the present work was to perform ECAP on pure copper at cryogenic temperature (193 K) and compare the effects on mechanical behavior and microstructure with the ECAP performed at room temperature (298 K). The ECAP procedure was performed using a die with an angle between the channels (Φ) of 120° and an outer curvature angle (Ψ) of 22°. The samples were processed at both temperatures, up to ten ECAP passes (10X), giving an equivalent strain of ~6.7. The billets processed at 193 K via ECAP achieved higher values of hardness, yield and ultimate tensile strength. This also indicated a combination of grain refinement, high dislocation density and energy stored in a form of microstructural defects, higher than those achieved at 298 K. Hence, it was concluded that cryogenic ECAP is an effective route for promoting grain refinement and, consequently, promote an increase in mechanical strength. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Copper / Nickel / Cobalt, Other, Other |