About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Developments in Plate and Line Pipe Steels
|
| Presentation Title |
Correlation of the Effect of Carbon on the Orientation Relationship in the Intercritical Annealing Temperature Range of Steel |
| Author(s) |
Ayobami Alice Oladipo, Matt A Steiner, Eric J Payton |
| On-Site Speaker (Planned) |
Ayobami Alice Oladipo |
| Abstract Scope |
The equilibrium carbon concentration of austenite is a function of the temperature at time of transformation, causing a variation in the orientation relationship (OR) between the parent and transformed phase. In the intercritical region of a steel weld, the highest temperature reached induces partial austenization which influences the composition of austenite. As a result, the crystallography of the transformed martensite phase is impacted, therefore the performance of the steel component. To ascertain if the peak temperature could be determined from the OR of a plain carbon steel quenched from intercritical temperature range. This study investigates the correlation of the measured OR with the atomic carbon content of austenite. The crystallographic characteristics are characterized using Electron backscatter diffraction (EBSD) and presented in terms of angular deviation from Bain correspondence. The OR demonstrates a progressive variation with the equilibrium atomic content which is indicative of the temperature at transformation. |