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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium High Performance Steels
Presentation Title In-situ Investigation of Strain Partitioning and Localization in a Dual Phase Steel Up to and Beyond Necking
Author(s) Hyunseok Oh, Krista Biggs, Onur Güvenç, Hassan Ghassemi-Armaki, Narayan Pottore, Cemal Cem Tasan
On-Site Speaker (Planned) Hyunseok Oh
Abstract Scope Strain partitioning and localization processes are triggered during the deformation of multi-phase metallic materials. However, microscopic digital image correlation is typically limited to low strain levels (< ~15%) due to surface topography evolution, which hinders the understanding of strain partitioning and localization processes at higher strain levels. Here, we address these challenges by developing a method that relies on serial in-situ scanning electron microscope mechanical tests of samples pre-strained to different levels. Applying this method to a dual-phase steel, we observe that ferrite and martensite on average exhibit a linear strain partitioning trend throughout the deformation even beyond necking. Strain localization bands with different microscopic strain paths develop in the microstructure, and the frequency of these bands differs at different stages of deformation. Martensitic constituents play an important role in the strain localization processes and the resulting microscopic strain paths.
Proceedings Inclusion? Planned:


A Novel Approach to Improve Strength-ductility Combinations in Medium Manganese Steels
A Study on Magnetization Characteristics According to the Direction of 9%Ni Steel Sheet
Characterization of a Complex-phase Steel by Electron Backscattering Diffraction and Atomic Force Microscopy
Computational Design of a High Strength High Toughness Fully-austenitic TRIP Steel
Custom Designed Tapered-rolling Process Enables Hard Steels with Mixed-mode Cracking Resistance
Deformable Plastic Strain-induced Epsilon-martensite in FeMnCo Alloys: A Pathway Towards Overcoming the Limits of Metastability
Design and Challenge of Cold-rolled Dual-phase Steel Strengthened by Interphase Precipitation
Design and Characterization of Abrasion-resistant Steel Coatings for Nuclear Industry
Early Stages of Liquid-metal Embrittlement in an Advanced High-strength Steel
Effects of Austenite Stability on Sheet Forming of Advanced High Strength Steels
First Principles Calculations of Structural Point-defect Calculations in Austenitic Stainless Steels
Hydrogen Embrittlement Susceptibility of a High Manganese Twinning Induced Plasticity Steel Examined via Correlative Microscopy
ICME Design of β-NiAl + Cu + VC Triple Nano-precipitate Strengthened Austenitic Steel
Impact of Alloy Composition on the Hot Ductility of Steel during Continuous Casting
In-situ Investigation of Strain Partitioning and Localization in a Dual Phase Steel Up to and Beyond Necking
Large Strain Ambient Temperature Rolling Reduction of an Ultra-high Strength Steel
Loading/Unloading Yielding Behavior in 304 Stainless Steel
Low-density Steels: Influence of Al Content and Processing on Microstructure and Properties in Medium-Mn Steels
Manganese-diffusion Controlled Kinetics of Austenite Growth and Cementite Dissolution during Intercritical Annealing of Medium-Mn Steels
Microstructural Engineering in Dual Phase Steels -Partitioning Aspects and Correlation to Formability
Microstructure and Mechanism Based Lifetime Predictions in Various Weldment Failures Under Complex Thermomechanical Conditions
Modeling Liquid Metal Embrittlement Cracks in Cross-tension Spot Weld Testing for Advanced High Strength Steels
Multi-stage Welding Cycles for Resistance Spot Welding of Advanced Martensitic Steels
Non-metallic Precipitates Evolution Mechanism of Fe-3.0wt%Si Steel
NOW ON-DEMAND ONLY – Co-optimization of Mechanical, Thermal, and Oxidation Properties in Steels for Energy Conversion Systems
NOW ON-DEMAND ONLY – The Influence of Temperature on the Strain-hardening Behavior of Fe-22/25/28Mn-3Al-3Si TRIP/TWIP Steels
On the Phase Stability, Mechanical Properties, and Deformation Mechanisms of an Equiatomic CrFeNi Medium-entropy Alloy
Phase Field Simulations of Microstructure Evolution during Rapid Thermal Processing of High Strength Steels
Properties and Performance of Fe-Mn-Al-C Alloys as a Function of Composition
Reverted Austenite in Precipitation Hardened Stainless Steels: Design Considerations and Mechanical Effects
Simultaneous Enhancement of Hardness and Corrosion Resistance in Carbide-reinforced Martensitic Steels
Small-scale Rapid Alloy Prototyping of Extra-low Carbon Steel to Investigate the Effects of Cu and Cr Residuals
Stacking Fault Energy Dependent Deformation Mechanisms in Medium-Mn Steels
Strain Partitioning Analysis during Tensile Tests in Intercritically Deformed Steels
Strain Path Dependence of Microstructural Strain Path Development: An Experimental-numerical Study on Dual-phase Steels
Tailoring Transformation Plasticity to Resist Microvoid Shear Localization
Tempering & Austempering of Double Soaked Medium Manganese Steels
Tensile Behaviour and Martensitic Transformations in a Cold Rolled Medium Mn Steel
Understanding Composition Dependence of Deformation Microstructure in Hydrogen Resistant Austenitic Steels
Understanding Deformation-induced Cracking in Dual-phase Steel via the Combination of EBSD Analysis and Convolutional Neural Network
Understanding Microstructural Evolution in a Thick Gauge High Strength Niobium-microalloyed Line Pipe Steel
Using Computer Vision to Predict Mechanical Properties of High Temperature Alloys

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