About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Characterization of Minerals, Metals and Materials 2022
|
Presentation Title |
Challenges Concerning the Characterization of Cementite in Low Carbon Steel Using Electron Backscatter Diffraction |
Author(s) |
Mary O'Brien, Kip O Findley, Samantha Lawrence |
On-Site Speaker (Planned) |
Mary O'Brien |
Abstract Scope |
Understanding the location and morphology of cementite precipitation in steel has long been a challenge tackled almost exclusively with traditional transmission electron microscopy, particularly in low carbon steels. However, scanning electron beam techniques such as electron backscatter diffraction (EBSD) and transmission Kikuchi diffraction (TKD) can leverage automated diffraction pattern analysis and high scan rates to improve statistics in cementite analysis. Moreover, coupling energy dispersive spectroscopy (EDS) with simultaneous EBSD or TKD is desirable to assess alloy segregation to cementite. However, several challenges arise when utilizing these techniques including the large electron beam interaction volume, Hough indexing algorithms, and attributes of steel that make EDS interpretation challenging. This talk will discuss these challenges through the lens of a case study concerning low carbon microalloyed pipeline steel. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Iron and Steel, |