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Meeting MS&T23: Materials Science & Technology
Symposium Advances in Understanding of Martensite in Steels II
Presentation Title Influence of Strain Rate on Mechanical Behavior and Microstructure Evolution of Fe-0.10C-5Mn Medium Manganese Steel
Author(s) Mei Zhang
On-Site Speaker (Planned) Mei Zhang
Abstract Scope Tensile deformation behaviors of Fe-0.10C-5Mn medium manganese steel were studied in a strain rate range of 10-3-500 s-1 using tensile testing machines. In-situ observation under scanning electron microscope and X-ray diffraction were adopted to investigate the steel. With strain rate increasing, yield strength and tensile strength of the steel of both high-speed and quasi-static tension increase, showing strain rate strengthening trends. Howerer, the strength at strain rate 0.1 s-1 drops to a valley. The elongation fluctuates greatly, increases first and decreases later. Strain rate affects the deformation mechanism of the steel significantly. On the one hand, the strain rate increasing aggravates the dislocation proliferation and entanglement, brings about a dislocation strengthening effect. On the other hand, it induces adiabatic temperature increment, leads to a "softening" effect. The higher the strain rate, the higher the stability of austenite, and the weaker the TRIP effect of the steel emerged.


Achieving 1.4 GPa Tensile Strength with Good Ductility in a Novel Low-alloy Low-carbon Martensite Steel
Effect of Thermomechanical Strategy and Ni-Mo Alloying on High Strength Quenched and Tempered Thick Plates
Evolution of Dislocation Structure during Plastic Deformation in Lath Martensite of Low-Carbon Steel Observed by ECCI
Excess Solute Carbon and Retained Tetragonality in Autotempered and Tempered Fe-C Lath Martensite
Geometrical Aspect of Variant-pairing of Martensite in Steel
In-situ Neutron Diffraction Analysis of Deformation-induced Transformation Behavior in High-strength and High-ductility Metastable Austenitic Stainless Steel Produced by Cold-rolling and Partitioning Method
Influence of Strain Rate on Mechanical Behavior and Microstructure Evolution of Fe-0.10C-5Mn Medium Manganese Steel
Investigation on Gigapascal Martensitic Microstructures for Higher Bendability of Advanced High-strength Hot Stamped Steel
Low Temperature Martensitic Transformations in Fe-Ni Alloys: Insight from Iron Meteorite Analyses
Phase Field Study of Tempering in Maraging Steels
Substructure and Crystallographic Features of As-quenched Lath Martensitic Steels
Substructure Boundary Sliding in Lath Martensite Quantitatively Investigated by Using Molecular Dynamics (MD) Simulation and Experiment

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