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Meeting MS&T24: Materials Science & Technology
Symposium Austenite Formation and Decomposition V: A Symposium in Memory of Prof. Mats Hillert
Presentation Title Partitioning and Non-Partitioning Growth of Austenite during Double-Soaking Treatments
Author(s) Joshua J. Mueller, Alexandra G. Glover, John G. Speer, Emmanuel De Moor
On-Site Speaker (Planned) Joshua J. Mueller
Abstract Scope Double-soaking (DS) is a thermal treatment for medium-manganese steels that is intended to generate microstructures predominantly consisting of martensite and retained austenite. The DS treatment consists of two isothermal austenite-forming portions; a primary, lower temperature segment to form Mn-rich austenite followed by a secondary, higher temperature segment to induce further austenite growth. The present work is concerned with formation of austenite during secondary soaking (SS). Previous research suggests a transition from partitioning to non-partitioning growth of austenite during SS of a Fe-Mn binary alloy with increasing SS temperature. The present work expands this discussion to consider Fe-Mn-C alloys and draws on concepts relating to partitioning and non-partitioning phase transformations in Fe-X-C alloys. Phase field simulations that describe transitions in phase transformation mechanisms and experimental characterization of the Mn concentration distribution will be presented. Thermodynamic constructions will be discussed that support the phase transformation mechanisms suggested by simulation and experimental characterization.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Atomistically Informed Phase-Field Simulations of Phase Transformation
Austenite at Its Finest: Understanding Interlath Austenite and Its Effects
Austenite Decomposition during Hot Strip Rolling of a X70 Line Pipe Steel
Austenite Nucleation from Ferrite and Cementite in Steels Alloyed with Mn and Si
Bainite Formation Observed by In Situ Transmission Electron Microscopy
CALPHAD-Based Modeling of Pearlite Transformation in Multicomponent Steels
Chemically Patterned Steels
Decomposition of Retained Austenite during Tempering of High-Strength Tool Steels: Effect of Silicon and Tempering Parameters
Delta-Ferrite to Austenite Phase Transformation Pathways in 2205 Duplex Stainless Steels Manufactured via Laser Powder Bed Fusion
Design of an Alumina Forming Martensitic Steel
Effect of Vanadium Alloying on Pearlite Transformation
Effects of Manganese on Austenite Stabilization in Dissimilar Steel Welds: Implications for Ferrite Prediction
Effects of Mn Heterogeneity on Bainite and MA Microstructure in Low Carbon Steel
Extremely Low Cooling Rate Austenite Decomposition in FeNi Iron Meteorites
F-1: Role of Cerium on Transformation Kinetics and Mechanical Properties of Low Carbon Steels
Ferrite and Austenite Transformations in Fe-N Based Alloys
Fundamental Understanding of Nucleation during Solid–Solid Phase Transitions Through Atomistic Simulations
In-Situ Monitoring of Austenite Decomposition with Laser Ultrasonics
Magneto-Elastic Synergism in α → γ Transformation in Fe-C Alloys: A Quantitative Phase-Field Modeling Approach
Mats Hillert’s View on the State of Migrating Phase Interfaces
Microstructure and Hardness Evaluation of a Quenched and Partitioned Gray Cast Iron
Multiphase Field Simulation of Austenite Decomposition into Ferrite and Bainite
Nanoscale Investigation of Austenite To Ferrite Transformation Interfaces in Fe-Mn-C Steel
Novel Hierarchical γ90-εtwin-α’ Triple Phase Structure at ε-ε Martensite Intersection
Optimization of Duplex Medium Manganese Steel Microstructures by High-Throughput Characterization Methods
Optimizing Steel Microstructure for Mechanical Properties: Insights from Comparative Characterization Methods
Partitioning and Non-Partitioning Growth of Austenite during Double-Soaking Treatments
Pearlite Growth Kinetics in Fe-C-Mn Eutectoid Steels: Quantitative Evaluation of Energy Dissipation at Pearlite Growth Front via Experimental Approaches
Phase Transformations in Additive Manufacturing of Tool Steels
Properties and Processing of Medium-Mn Steel Plate: Understanding Composition and Heat-Treatment Effects
Quantitative Evaluation of Ferrite Growth Behaviors during Decarburization of Fe-C and Fe-C-Mn Alloys
Quenching and Austenite Reversion-Treated Medium Mn Steel Containing Various Precipitates
Rapid Heating for Enhanced Austenite Reversion and Tensile Properties Toward a Green Cold-Rolled Low-Density Steel
Revisiting the Concept of Local Equilibrium in Terms of Hillert Thermodynamics
Solute Interactions with the Ferrite/Austenite Interface
Texture Correction Factors for Austenite Phase Fraction Measurement via Diffraction
The Austenite Grain Growth of X80 Steel at Different Temperatures and Its Influence on Decomposition Kinetics and Mechanical Properties at a Cooling Rate of 50°C/s.
The Bainite Transformation in Steel – Mats Hillert’s Perspective
The Effect of Deformation on the Bainite Transformation Kinetics
The Influence of Rapid Tempering on Retained Austenite Decomposition in 4340 Steel

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