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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Continuous Phase Transformations
Presentation Title Interfacial Spinodals
Author(s) Reza Darvishi Kamachali
On-Site Speaker (Planned) Reza Darvishi Kamachali
Abstract Scope Despite their finite spatial extent, interfaces can have profound impacts on microstructure properties. This is because of their distinct phase-like properties distinguishing them from the adjacent homogeneous bulk structure. When noticed by solute atoms, interfaces can experience their own chemical phase changes. In this talk, we investigate the constrained states of chemically decomposed phases at interfaces. A density-based theory of interfaces is proposed to describe the confined chemical decomposition at general grain boundaries. Here the grain boundary is viewed as a lesser dense, defected structure with reference to the corresponding bulk structure. Using this picture, the thermodynamic origins of interfacial spinodal phenomena are revealed. We also show that transient interfacial spinodals can be activated over a large alloy composition range, enabling kinetic engineering of interfacial chemistry.
Proceedings Inclusion? Planned:
Keywords Phase Transformations, Computational Materials Science & Engineering,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Cluster variation model of phase behavior in Heusler-forming alloy systems.
Competitive Partitioning and Decomposition Evolution in Nanocrystalline Alloys
Cross-Slip and Work-Hardening in Short-Range Ordered FCC Alloys
Effect of bulk and local phase transformation on deformation mechanisms
Interfacial Spinodals
Intrinsic phase stability and continuous phase transformations in TiAlZrN ultra-hard nitride coatings
Magnetically Driven Short-Range Order in the CrCoNi System
Microstructural engineering of Ni-based superalloys processed by conventional and additive manufacturing
Phase-Field Modelling of Transformation Pathways and Microstructural Evolution in MPEAs (Multi Principle Element Alloys)
Phase competition in the two steps continuous phase transformation during solidification of Terbium
Short-range clustering and ordering evolution of Ni-22Cr-13Mo alloy
Structural transformations driven by irradiation in the high defect density limit.
Study of Precipitation Behavior of High-Cr Ni-based Filler Metals using In-situ S/TEM
Thermodynamics of the Invar Transition: Phonons vs. Magnetism

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