| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Defects and Properties of Cast Metals
|
| Presentation Title |
The 3D Correlation of Si Segregation to Nodules Size, Nodules Spatial Distribution and Local Mechanical Strain in Ductile Cast Iron |
| Author(s) |
Chaoling Xu, Tito Andriollo, Yubin Zhang, Fengxiang Lin, Juan-Carlos Hernando, Jesper Hattel, Niels Skat Tiedje |
| On-Site Speaker (Planned) |
Tito Andriollo |
| Abstract Scope |
Alloying elements such as Si, Mn and Mo are frequently added to ductile cast iron (DCI) for the improvement of mechanical properties. Additionally, the segregation of these elements is strongly affected by the chronology of formation of the graphite nodules and of metallic matrix during solidification. For the first time, computed tomography, energy-dispersive X-ray spectroscopy (EDS) and digital volume correlation were used to quantitatively investigate the correlation of Si segregation to the size and spatial distribution of the nodules as well as to the 3D mechanical strain pattern arising during tensile loading. Furthermore, immersion color etching sensitive to Si segregation was employed to generate 2D Si segregation maps to support the outcome of the EDS analysis. The results provide fundamental knowledge about the mechanism and chronology of microstructure formation in 3D space and shed light on how the segregation can affect the mechanical response of DCI at the microstructural level. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |