About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
Mechanical Behavior and Microstructural Evolution of a Cu-0.7Cr-0.1Zr Alloy at Cryogenic Temperature: An In-situ Synchrotron X-ray Evaluation |
Author(s) |
Pedro Fernandes Oliveira, Danielle Magalhães, Marcel Izumi, Osvaldo Cintho, Andrea Kliauga, Vitor Sordi |
On-Site Speaker (Planned) |
Pedro Fernandes Oliveira |
Abstract Scope |
The present work concerns the evaluation of the mechanical behavior and microstructural changes of a Cu-0.7Cr-0.1Zr alloy (UNS C18150), during deformation at 123 K and 298 K. The alloy was tensile tested at both temperatures using a Gleeble™ 3350 machine. Simultaneously, the microstructural changes were followed by an in-situ synchrotron X-ray diffraction. The results showed an increase of both yield and ultimate tensile strength, and a slightly increase in uniform elongation. It was also noted a general tendency to increase the dislocation density and decrease the crystallite size, as the strain was increased. These microstructural changes were even more pronounced at 123 K. Moreover, the Kokcs-Mecking model showed that the dynamic recovery rate was reduced at 123 K. Hence, it was concluded that the reduced dynamic recovery rate at 123 K led to an increase in the work hardening capacity, which caused the simultaneous increase in strength and ductility. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Other, Other |