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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Advanced High Strength Steels IV
Presentation Title Austenite Stability of an 1180 MPa Quenched-and-partitioned Steel
Author(s) Ana Luiza Araujo, Jun Hu, Erik J Pavlina
On-Site Speaker (Planned) Ana Luiza Araujo
Abstract Scope One approach to produce steels with a combination of high strength and high formability is via a multiphase microstructure containing metastable austenite. Metastable austenite transforms to martensite differently under different loading conditions, testing temperature, and strain rates. A quenched-and-partitioned (Q&P) steel with a minimum ultimate tensile strength of 1180 MPa was chosen in this study to demonstrate this behavior. Five loading conditions, including uniaxial tension, uniaxial compression, simple shear, equi-biaxial tension, and plain strain tension, testing temperatures ranging from -25 to 225 °C, and nominal strain rates ranging from 0.001 to 1000/s were used. Retained austenite content was evaluated via x-ray diffraction (XRD) and electron backscattered diffraction (EBSD) for each condition and at various strain levels. Lastly, a phenomenological model was proposed to fit the transformation behavior coupled with plastic strain under these different conditions.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

An Energy Absorbing Medium Mn Steel for Industry
Annealing Time Dependence of Tensile Properties of 8 wt% Mn Steel
Austenite Stability of an 1180 MPa Quenched-and-partitioned Steel
Austenitization of a Cold-rolled Dual-phase Steel: Interaction with Recrystallization and Influence of Cementite Composition
Crystal Plasticity Finite Element Simulations of the Planar Anisotropy of Q&P Steels
Development of Hot-rolled TRIP Steel
Development of Quenching and Partitioning Plate Steel Intended For Wear and Toughness Applications
Effect of Composition on Properties of Age-hardenable Fe-Mn-Al-C Alloys
Effect of High Temperature Processes on Dual Phase Steel Manufacture
Effect of Pre-straining on High Cycle Fatigue and Fatigue Crack Propagation Behaviors of CP (Complex Phase) Steel
Effect of Si on Microstructure and Mechanical Properties of FeMnAlC Lightweight Steels
Effect of Strain Path on the Deformation Characteristics of Austenite-containing Advanced High Strength Steels
Effect of Strain Rate on Thinning and Failure Behavior of 22MnB5 Steel During Hot Stamping Condition
Effects of Prior Austenite Grain Size on Microstructure of Bainite and Retained Austenite in TRIP Steel
End to End Simulation and Genetic Optimization for the Design of Medium Mn Steels
Examination of Cementite+Austenite+Ferrite Multiphase Steel Produced by ART Annealing
Flash Stamping by Using Multistep Partitioning
High-performance Full-field Crystal Plasticity with Dislocation-based Hardening and Slip System Backstress Laws: Application to Modeling Deformation of Dual-phase Steels
Impact of Cr and Mn on the Hydrogen-carbide Interaction in High-strength Steels
Improvement of Hydrogen Induced Cracking Resistance by Tempering of an X65 Pipeline Steel for Sour Service
Improving Microstructure of Ferritic-bainitic Steel used in Automotive Industry
In-situ Quantitative Assessment of the Role of Silicon During the Quenching and Partitioning of a 0.2C Steel
Increased Damage in Dual Phase Steels under Dynamic Strain Aging Conditions
Influence of Prior Processing on the Response to Quenching & Partitioning
Interstitial-free Bake Hardening Realized by Epsilon-martensite Reverse Transformation
J-1: Electrochemical Characterization of Advanced High Strength Steel DP 780 MPa
J-2: Excellent Strength-ductility Combination of Austenitic-hadfield/martensitic-hot-press-forming Clad Steel Sheet
J-4: Producing a 1200 MPa Complex-phase Advanced High Strength Steel
J-5: Solutions to Hydrogen Embrittlement of Ultra-high Strength Press-hardened Steel for Automotive Application
J-6: The effect of alloy elements on the peritectic range of Fe-C-Mn-Si steels
J-7: Transformation Kinetics in a Trip Steel during the Plastic Deformation by Tension and Compression
Low-Density Steels: Microstructure Evolution and Tensile Behavior in Novel FE-MN-AL-C Steels
Measurement and Prediction of the Transformation Strain in High Strength Steels
Mechanisms of Embrittlement and Recovery in Cast HY-80 High-strength Low-alloy Steel
Microscale Insight into Deformation and Fracture of Ultra-high Strength Martensitic Steels
Microstructural Origins of Lüders Banding in Medium Manganese Steels
Multi-scale Modeling of Hydrogen Embrittlement in High-strength Steels
Nanoscale Investigation of Austenite/Ferrite Interfaces in Medium Carbon Fe-Mn-C Steels at Different Inter-critical Temperatures
Physically-based Model for Coupled Recovery and Recrystallization of Ferritic Steels
Process Design and Genetic Optimization of HSLA Steels Using Mean-field and Multi-phase Field Modeling
Strength and Toughness of Nano-structured Pearlite
TBF Steels Produced by Partial Austenitization
The Influence of Transformation Induced Plasticity on Damage Development in Third Generation Advanced High Strength Steels
The Relevance of Interfacial Segregation for Controlling Second Phase Precipitation in Advanced High Strength Steels
TRIP-Maraging Nanolaminate Stainless Steel
Understanding the Effect of Nickel on the Microstructure of Low Density FeMnAl Steels

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