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Meeting MS&T23: Materials Science & Technology
Symposium Advances in Understanding of Martensite in Steels II
Presentation Title Effect of Thermomechanical Strategy and Ni-Mo Alloying on High Strength Quenched and Tempered Thick Plates
Author(s) Xabier Azpeitia, Nerea Isasti, Hardy Mohrbacher, Eric Detemple, Pello Uranga
On-Site Speaker (Planned) Pello Uranga
Abstract Scope The addition of Mo and Ni as alloying elements is a common practice for the production of heavy gauge high strength quenched and tempered plates, especially when high strength-good toughness combinations are required. Due to limited cooling rates in the plate center area, the risk of formation of undesirable soft phases within the martensitic matrix increases. In addition, the austenite conditioning and grain size refinement is more limited due to low reductions applied during roughing. With the main objective of exploring the metallurgical mechanisms interacting in the different process steps, laboratory thermomechanical simulations reproducing thick plate hot rolling mill conditions and subsequent conventional quenching were performed using steel grades with different Mo (0.25-0.5%) and Ni additions (0-1%). Phase transformations and hot working behavior was analyzed aiming to correlate the interaction between composition, processing parameters, and mechanical properties in the final quenched and tempered microstructures.


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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