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Meeting MS&T21: Materials Science & Technology
Symposium Nucleation of Solid-State Phase Transformations
Presentation Title 3-dimensional Observation of Bainite from Austenite Grain Boundary in 0.6wt% Carbon Steel.
Author(s) Shotaro Jimbo, Shoichi Nambu
On-Site Speaker (Planned) Shotaro Jimbo
Abstract Scope The crystallography and morphology of bainite formed at the austenite (γ) grain boundaries in 0.6wt% C steel were studied by 3D observation using serial sectioning technique and EBSD. The steel samples were austenitized at 1273 K for 10 min, and subsequently cooled down to and isothermally held at 623 K for bainite transformation; when the bainite transformation proceeded to a certain degree, they were quenched to stop bainite transformation. In the early stage of transformation, the bainite forms almost parallel to the γ grain boundary plane and sometimes contacts with the grain boundary edge, suggesting that they act as nucleation site of bainite. The effect of these boundaries on the bainite formation was investigated not only the planer grain boundaries but also the grain boundary with curvature. The results suggested that the orientation of the γ grain boundary is more important for the formation of the bainite.


3-dimensional Observation of Bainite from Austenite Grain Boundary in 0.6wt% Carbon Steel.
Critical Nuclei at Hetero-phase Interfaces
Effect of Cooling Rate and Austenitic Grain Size on the Austenite Decomposition Kinetics in a Low- carbon Steel
Formation of the γ’’’-Ni2(Cr, Mo, W) Phase during Two-step Heat Treatment in Haynes® 244® Alloy
Identification of Critical Nucleation Events by the Gromov-Wasserstein Distance
Investigation of Nucleation Mechanisms Associated with the Formation of Coprecipitates in Ni-based Superalloys
Modeling Microstructure Evolution Using the Steepest-entropy-ascent Quantum Thermodynamic Framework
Observing the Solid-state Processes under Additive Manufacturing Conditions Inside the TEM
P1-28: Structure Influenced Rapid Hydrogenation Using Metal-acid Contacts on Crystallographically Oriented VO2 Thin Films

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