Towards High Strength-Ductility Balance Using Double Annealing Cycles

Artem Arlazarov; Jean Marc Pipard; Nora Kabou; Pierre Targy; Marc Olivier Thénot

doi:10.4028/p-Od7CFl

Paper Titles

Effect of Thermomechanical Rolling on Mechanical Properties of TRIP-Aided Steel Sheet
p.153

Prediction of TTR Diagrams via Physically Based Creep Simulations of Martensitic 9-12% Cr-Steels
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Influence of the Holding Thickness and Process in the Microstructure and Mechanical Properties of a Microalloyed 380 MPa Structural Steel
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Application of CALPHAD for the Prediction of Matrix Phase Transformations in Steel
p.173

Towards High Strength-Ductility Balance Using Double Annealing Cycles
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Quench and Bainite (Q&B) Thermal Cycle as an Alternative to Standard Quench and Partitioning (Q&P) Annealing to Produce AHSS
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Importance of through Hardening of Low-Alloy High Performance Martensitic Steels for Large Section Applications
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Effects of Substrate Microstructure and Chemical Composition on Liquid Metal Embrittlement in Galvanized 3rd Generation AHSS
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Double Soaking of Medium Manganese Steels
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HomeMaterials Science ForumMaterials Science Forum Vol. 1105Towards High Strength-Ductility Balance Using...

Towards High Strength-Ductility Balance Using Double Annealing Cycles

Abstract:

Impact of first annealing on the formation and evolution of the microstructure during second annealing and on the final mechanical properties was investigated. Simple Fe-C-Mn-Si steel was used in this study. Dilatometry tests coupled with metallographic examinations were carried out to monitor the evolution of phase transformations and associated microstructure. Difference in the austenite evolution between simple and double annealing was highlighted. Based on the obtained results, conditions were selected for the annealing trials on bigger sample. Mechanical properties of heat-treated steels were assessed through the standard tensile tests. Double annealing treatment resulted in a better strength-ductility balance and in a good stability against soaking and quenching temperature variation. Complex ultra-fine multiphase microstructure containing at least 5 different microstructural constituents was revealed and observed using Scanning Electron Microscopy. As well, retained austenite fraction was estimated through magnetization saturation method.

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Materials Science Forum (Volume 1105)

Pages:

179-184

DOI:

https://doi.org/10.4028/p-Od7CFl

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Online since:

November 2023

Authors:

Artem Arlazarov*, Jean Marc Pipard, Nora Kabou, Pierre Targy, Marc Olivier Thénot

Keywords:

Advanced High Strength Steels, Double Annealing, Mechanical Properties, Retained Austenite, Transformation Induced Plasticity (TRIP)

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