| About this Abstract |
| Meeting |
Materials Science & Technology 2019
|
| Symposium
|
Thermomechanical Processing in Shaping and Forming of Steels
|
| Presentation Title |
Effects of Thermomechanical Processing, Microalloying, and Rapid Heat Treatment on Microstructural Development, Carbonitride Precipitation, and Mechanical Behavior of Medium Carbon Steels |
| Author(s) |
Blake Whitley, John Speer, Robert Cryderman, Kip Findley |
| On-Site Speaker (Planned) |
Blake Whitley |
| Abstract Scope |
Thermomechanical processing, microalloy additions (Al, V, Nb), and rapid induction hardening are investigated for their individual and synergistic effects on microstructural development in medium carbon steels. Finite element modeling, thermal and thermomechanical Gleeble simulation, light optical microscopy, scanning electron microscopy, transmission electron microscopy, and high-energy X-ray synchrotron small-angle scattering have been implemented in order to characterize the evolution of austenite grain size and precipitation of nano-scale carbonitride particles throughout various processing steps in the manufacture of automotive steel shafts. Additionally, the resulting performance benefits offered through controlled processing of microalloyed steels have been demonstrated through 3-point bend testing of notched specimens across a range of prior austenite grain sizes accomplished through changes to microalloy composition and steel processing. |