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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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

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Assessment of Phase-field Fracture Simulations of Brittle Fracture in Polycrystalline Materials
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Characterization of Deformation Mechanisms Near Grain Boundaries in Mg Alloys by Means of In-situ EBSD and High-resolution Digital Image Correlation
Compressive Behavior of Pure Polycrystalline Cobalt and Other HCP Metals Investigated Using Acoustic Emission
Damage Evolution in Al Alloys Assessed via X-ray Computed Tomography and Crystallographic Orientation Data
Direct Measurement of the Effective Mechanical Properties of Additively Manufacturing Octet Truss Lattices using High Energy X-ray Diffraction
Directional Hardening in Metals: GND / Bowout Mechanism
Dynamic Cryo-mechanical Properties of Dewetted Nickel Microparticles
Effect of Defect Spatial Distribution on Ductile Failure in Additively Manufactured 316L
Effect of Macrozone Stereology on Crack Growth Rate Predictions in Ti-6Al-4V
Explicit Separation of Edge and Screw Dislocation Mobility and Density Evolution Law in BCC Single Crystal Plasticity Model
Gradient Shape Memory Alloys: An Exploration of Pseudo and Thermo-elastic Response
High Pressure and In-Situ TEM Deformation of Nanoscale Metallic Interfaces and Precipitates
In-situ Micro-tensile Studies on the Effects of Ion Irradiation on the Mechanical Properties of Small-grained Alloys
In-situ Microstructure Evolution during High Temperature Deformation of Fe-C-Mn-Si Steel
In-situ Nano-indentation of a Pt Nanoparticle Combined with Bragg Coherent X-ray Diffraction Imaging.
In-situ TEM Observations of Dislocation and Twinning Activities of Mg via Nanoindentation
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In situ Synchrotron Observation of Deformation Mechanisms, from Hot Tears during Superalloy Solidification to Volcanic Eruptions
Integrated Experimental-numerical Testing of “2D” Steel Microstructures
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L-53: Modeling of the Bending Behavior to Study Nested-Cylinder Structure in Spicules
L-54: Tensile Deformation of Polycrystalline Pure Cobalt Studied by In-situ High Energy X-ray Diffraction
L-67: KRaStk – A Multi-scale Toolkit to Compute Fibrous Material Properties
Ligament Aspect Ratio Effects on Elastic Properties of Porous Network Materials
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Micro-tensile Experiments on Low-carbon Martensitic Stainless Steel Alloy S41500
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Micropillar Compression Testing of Proton Irradiated NiCr2 Alloy
Monitoring Crystal-scale Evolution in Real-time using In-situ High Energy Diffraction Microscopy and Principal Component Analysis
Movement of Charged Dislocations in an Inorganic Compound under an Electric Field
Multiscale Scattering Modeling from Deforming Titanium Alloy Polycrystals
Nanoindentation Pop-in Analysis of Oxidized Ni-based Superalloys
Numerical Examination of the Oliver-Pharr Method for Nanoindentation of Shape Memory Alloys
Numerical Modeling and Advanced Characterization Techniques to Study the Influence of Process-inherited Local Deformation on In-service Behavior of an Inconel 718
On the Deformation Mechanisms of Ductility Enhanced Mg-X-Ca Alloys at Elevated Temperatures
On the Kink-band Formation in True and Brittle Micas
Optically Pumped Magnetometer Measuring Fatigue-induced Damage in Steel
Precision Strain Measurement During Additive Manufacturing
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The Dynamic Signatures of Strain Bursts in Metals
The Effect of Heat Treatment on Full-field Damage Evolution in Laser Powder Bed Fusion-manufactured 316L Stainless Steel
Three-dimensional In-situ Measurements of Martensitic Phase Transformation Across Length Scales using X-ray Topotomography and Dark-field X-ray Microscopy
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