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Meeting Materials Science & Technology 2019
Symposium Formability and Fracture of Metal Sheets
Presentation Title Behavior of Quenched-and-Partitioned Steels Deformed at Elevated Temperatures
Author(s) Ana L. Araujo, Jun Hu, Erik Pavlina, Amrinder Gill
On-Site Speaker (Planned) Ana L. Araujo
Abstract Scope The quenching and partitioning (QP) treatment is used to stabilize and retain austenite in steels at room temperature via carbon enrichment during heat treatment. In this study, the effects of deformation temperature on the austenite stability of two quenched-and-partitioned steels were investigated based on isothermal uniaxial tensile tests at 25–225 ˚C. Isothermal tensile curves showed loss of strength and ductility up to 150 ˚C. However, both strength and elongation increased when samples were tested above 175 ˚C. This behavior is in contrast to fully austenitic steel grades, which do not exhibit any recovery in strength or elongation over a similar temperature range. X-ray diffraction, dilatometry, and electron backscatter diffraction were used to analyze carbon partitioning, austenite decomposition, and microstructural evolution as it relates to isothermal deformation behavior.
Proceedings Inclusion? Definite: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Method to Predict the Ductile Fracture of Metal Sheets under Complex Plane Stress
Anisotropic and Time-dependent Continuum Damage Coupled Plasticity Model for Predicting Ductile Fracture of AA 6xxx
Behavior of Quenched-and-Partitioned Steels Deformed at Elevated Temperatures
Biaxial Tensile Testing Using Laser-deposited Cruciform and Its Extension to Non-proportional Loading
Deformation Mode Effects on Austenite Stability of Quenched-and-Partitioned Steel Measured via X-ray Diffraction and Electron Backscattered Diffraction
Distortional Anisotropic Hardening Model for Describing Complex Bauschinger and Transient Effects in Metal Forming Simulations
Edge Stretchability of Hot Rolled High-strength Low-alloy Steel
Effect of Ultrasonic-assisted Two-point Incremental Sheet Forming (UA-TPIF) on Surface Finish
Mechanical Behavior of Ni and Cr added Bainite/ Martensite Multiphase Steels
Mitigation of Edge Cracking during Accumulative Roll Bonding of Aluminum Alloys
P3-90: Prediction Method of Voids Distribution in the Punched Surface of the Spheroidizing Annealed Medium Carbon Steel Sheet by the Scrap
Stress-strain Response in the Early Stage of Hydraulic Bulge Testing
Study of GP-zone/MgZn2 Precipitation Coupled with Deformation in Al-Zn-Mg-Cu to Overcome the Strength-ductility Paradox
The Influence of Phase Constituents on Hole Expansion Capacity of Multi-phase Steels

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