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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium High Performance Steels
Presentation Title Phase Boundary Segregation Induced Strengthening in Ultrafine-grained Duplex Medium-Mn Steels
Author(s) Yan Ma, Binhan Sun, Alexander Schökel, Wenwen Song, Dirk Ponge , Dierk R. Raabe, Wolfgang Bleck
On-Site Speaker (Planned) Yan Ma
Abstract Scope Hetero-interfaces affect the materials in various aspects such as dislocation activity and damage formation. However, it remains a question whether the characteristics of phase boundaries would also have an impact on the mechanical behavior in multiphase steels. Here we reveal a phase boundary segregation-induced strengthening effect in ultrafine-grained duplex medium-Mn steels. We found that the carbon segregation at ferrite-austenite phase boundaries resulted in a yield strength enhancement by 100–120 MPa and simultaneously promoted discontinuous yielding. The sharp carbon segregation at the phase boundaries impeded interfacial dislocation emission, thus increasing the stress required to activate such dislocation nucleation process and initiate plastic deformation. These findings extend the current understanding of the yielding behavior in medium-Mn steels, and more importantly, shed light on utilizing and manipulating phase boundary segregation to improve the mechanical performance of multiphase metallic materials.
Proceedings Inclusion? Planned:
Keywords Iron and Steel, Mechanical Properties,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Modified Model for Predicting Retained Austenite Using Informed Compositional Modeling
A New Approach for Optimizing Heat Treatment Parameters in Q&P Steel
Advanced Microstructural Characterization of Long-term Thermal Ageing Effects in Ferritic-Martensitic Steels
Advancing AF96: Next Generation Strong/Tough Steels
Analysing the Corrosion of T91 in Liquid Lead-bismuth-Eutectic
Atomistic Modeling of a Nano-precipitate Strengthened Alloy
B2 Precipitation Strengthened Medium Mn Steel Processed by Intercitical Annealing and Aging
Bridging the Precipitation Behaviour and Mechanical Properties of Cu-Ti Modified Quenched and Tempered Steel
Carbide Precipitation Strengthening Behaviour in an Additively Manufactured High-speed Steel with Unprecedented Strength
Characterization of Ductility and Microstructure Evolution in HSLA Microalloyed Steel during Continuous Casting
Contradicting Role of Martensitic Transformation on Ductility and Toughness in a Medium Mn Steel
Contribution of Two Different Microstructural Morphologies on the Mechanical Responses in Medium-Mn Steels
Deformation and Damage Evolution of AHSS in Uniaxial Tension and Plane Strain Bending
Designing the Precipitation Sequence in Triple Nano-precipitate Strengthened Austenitic Steel
Effect of Nitrogen on the Hardening Mechanisms in the Highly Deformed Steel Rex734
Exceptional Fatigue Performance of Si and V Alloyed Nitriding Steels
Extreme Strengthening of Ausformed M54 through Ambient Temperature Rolling
Grain Growth and Precipitation Dissolution Modelling in the HAZ during Welding of Nb-Ti Steels
High-fidelity Crystal Plasticity Finite Element Modeling of Multi-phase Medium-Mn TWIP-TRIP Steel: Considerations In Microstructure Reconstruction and Meshing for Capturing the Influences of Phase Constituents
High Strength and Toughness Combination in Severe Plastically Deformed Martensitic and Austenitic Steels
Improved Toughness of Warm-rolled Medium-Mn Steels Through Nano-sandwich Microstructure
Improving the Low-temperature Toughness of Ni-Cr-Mo Low-Alloy Steel Castings via Short Intercritical Heat Treatments
In Situ & Post Mortem Investigations of Carbide-free Bainitic Transformations during Continuous Cooling
Influence of N and Mn on Performance of Advanced Austenitic Stainless Steels
Intercritical Annealing of DP Steels Investigated by In Situ High Energy X-ray Diffraction Experiments
Investigating the Roles of Microstructure on High-temperature Creep Responses of Steels
J-86: Dissimilar Metal Friction Weld Development for Enhanced Capability for Power Generation Components
J-87: Effect of Si on the Liquid Metal Embrittlement Susceptibility of Advanced High Strength Steels
J-88: Effects of Cr on Corrosion Behaviors of Hadfield Steel in a Neutral Aqueous Environment
J-89: Enhancing Tensile Property and Hydrogen Embrittlement Resistance of a Medium Mn Steel by Warm Rolling
J-90: High-speed Deformation Behavior of a Heterogeneous-nano Structured Austenitic Stainless Steel
J-91: Low-temperature Impact Properties of X70 Line Pipe Steel Depending on Location and Orientation
J-92: Microstructural Characterization of EUROFER97/3-type Steels Before Neutron Irradiation
Low-density, Medium-Mn Steels: Influence of Al Content on Microstructure Related Properties
Metastability of Martensite and Bainitic Ferrite as Carbon Super-saturated Structures
Microstructure Evolution and Zinc Infiltration in an Advanced High-strength-Steel during Liquid-metal Embrittlement
Modeling the Tensile Behavior of Martensitic Low-alloy Steels Accounting of Microstructural Heterogeneities
Nano-engineering of High Performance Steels
Neighborhood Effects on Mechanically Induced Martensitic Transformation in QP Steels
New Tensile Specimens Optimized to Characterize the Localized PRW Weld Areas of ODS Steels
Nucleation during Static Recrystallization of Austenite - A Combined Experimental and Modeling Approach
Numerical Investigations of Interface-controlled Phase Transformations during Intercritical Annealing of DP Steels
On the Development of High-strength High-damping Steels: A CALPHAD Assisted Alloy Design Study
Phase Boundary Segregation Induced Strengthening in Ultrafine-grained Duplex Medium-Mn Steels
Post-partitioning Treatment to Improve Strength-ductility Combination in a Quench and Partitioning Steel
Precipitate and Texture Evolution in a Thick-gauge Niobium-microalloyed Line Pipe Steel
Residual Stresses Near Inclusion Caused by Martensite Transformation
Semi In-situ Observation of Micro-crack Formation in Dual-phase Steels
Tempering of Low Carbon Martensite, Experimental Results and Model Development
Tensile Properties and Microstructures Development of Quenching and Partitioning (Q&P) Steels during Galvannealing Process
The Effect of Varying Carbon Equivalents on Temper Embrittlement Mechanisms in Nickel-Chromium-Molybdenum Steels
The Relationship between Hydrogen Embrittlement Behavior and Pre-strain Level of Medium-Mn Steel
Ultra-high Strength Steel for Defense Applications
Very Strong High-entropy Steel Strengthened by Multiphase of Multiscale

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