About this Abstract |
Meeting |
2023 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 |
L-54: Tensile Deformation of Polycrystalline Pure Cobalt Studied by In-situ High Energy X-ray Diffraction |
Author(s) |
Takumi Suzumura, Si Gao, Shuhei Yoshida, Nobuhiro Tsuji |
On-Site Speaker (Planned) |
Takumi Suzumura |
Abstract Scope |
Pure cobalt is well-known to have HCP structure at room temperature. However, small amount of high temperature FCC phase of pure cobalt has been always found to retain at room temperature, which could transform to HCP phase upon subsequent deformation. In this study, tensile tests with in-situ X-ray diffraction were performed at SPring-8 in Hyogo, Japan on a polycrystalline pure cobalt having HCP matrix phase and a few amounts of retained FCC phase to investigate the role of FCC to HCP transformation in the tensile deformation. It was found that the internal stress in the FCC phase quickly leveled off after yielding while that in the HCP phase increased continuously during deformation. The results suggested that the strain hardening of the specimen was mostly contributed by the HCP phase. The detailed analysis on the diffraction profiles and microstructure evolution will be discussed in the presentation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Copper / Nickel / Cobalt, Phase Transformations |