| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Austenite Formation and Decomposition V: A Symposium in Memory of Prof. Mats Hillert
|
| Presentation Title |
Multiphase Field Simulation of Austenite Decomposition into Ferrite and Bainite |
| Author(s) |
Ali Khajezade, Matthias Militzer |
| On-Site Speaker (Planned) |
Matthias Militzer |
| Abstract Scope |
Advanced high-strength steels (AHSS) steels have complex multiphase microstructures that can include ferrite, bainite, martensite and retained austenite. Controlling the microstructure during thermal processing determines the final mechanical properties of the steels. Development of microstructure-based process models is of critical significance to aid the development of robust processing paths. Here, phase field modelling is a suitable technique to describe the evolution of complex microstructures including the formation of bainite. In the present investigation, a systematic analysis is conducted to study the role of elasticity and interface anisotropy on austenite decomposition into ferrite and carbide free bainite. The role of transformation temperature as well as cooling rate on the formation of a ferrite-bainite microstructure is analyzed and compared with experimental data on austenite decomposition in a transformation-induced plasticity (TRIP) steel. The strength and limitations of the proposed modelling approach will be critically discussed. |