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Meeting Materials Science & Technology 2019
Symposium Gas/Metal Reactions, Diffusion, and Phase Transformation during Heat Treatment of Steel
Organizer(s) Daniel S. Baker, General Motors Corporation
Scope Ferrous metallurgy continues to evolve through advances in alloy development and processing. Heat treating is becoming a required manufacturing step for many ferrous products from sheet steels used for automotive body in white construction to bar steels used for gears and shafts to plate steels used for wear resistance applications or pipe and tubes.

Heat treating techniques include annealing, case hardening, precipitation strengthening, quenching and tempering. During heat treating processes, various atmosphere/steel reactions occur at the part surface, along with diffusion/phase transformation within the steel part. Added carbon and nitrogen through carburization, nitriding, or carbonitriding can greatly affect the response to heat treatment and the resulting microstructure and residual stresses. Research results from modeling to experimentation techniques used to understand the interactions, reactions, diffusion and phase transformation processes are expected.
This symposium encourages reports from the entire heat treat industry, from equipment suppliers to heat treaters to final users of the parts along with academia to communicate and share their new findings. Topics anticipated include, but are not limited to:
• Development of novel heat treatment technologies
• Materials science for heat treatment process design
• Numerical simulation of gas/metal reactions, diffusion and phase transformation during heat treating
• Improvements of heat treatment response through re-designing steel composition
• Microstructural study of steel during heat treatment processes
• Study on the relationship between microstructure and mechanical properties of heat treated steel
• Effect of heat treatment on the residual stresses imparted due to phase transformation or externally applied forces
• Effect of heat treatment atmosphere on carburization/nitriding/decarburization/oxidation

Abstracts Due 04/05/2019
Proceedings Plan Definite: At-meeting proceedings

Age Hardening in Lightweight FeMnAl Steels with Nickel Additions
Correlation of Microstructure and Hardness of Spheroidization Annealed Carbon Steel
Effect of Zr Microalloying on Austenite Grain Size of Low-carbon Steels
Effects of Heat Treatments on High Strength Low-alloy Nitrogen Steel
Effects of Microstructural Evolution on Corrosion Characteristics of Co-reduced UHS Stainless Steel
Mechanism for Z-phase Formation in 11CrMoVNbN Martensitic Heat-resistant Steel
Microstructural Evolution during Aging of a TRIP-aided Mo-free Lean Duplex Stainless Steel
Microstructural Refinement in Martensitic and Maraging Steels
P3-91: Austenite Grain Evolution Mechanism of High Carbon Rail Based on Thermal Technology
P3-92: Homogenization on Manganese Microsegregation in Continuous Cast Microalloyed Steel Slabs
P3-93: Numerical Simulation Research on Quality Control of the Continuous Casting Billet at Different Casting Speeds

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