| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
Study the Effect of Thermal Signatures on Microstructural Variation of EBM Additively Manufactured Ti-6Al-4V Builds |
| Author(s) |
Meiyue Shao, Chris Blackwell, Sriram Vijayan, Sabina Kumar, Sudarsanam Babu, Joerg Jinschek |
| On-Site Speaker (Planned) |
Meiyue Shao |
| Abstract Scope |
In the electron beam melting - additive manufacturing (EBM-AM) process, materials experience complex thermal signatures affecting microstructure and, ultimately, the mechanical properties of the final AM build. Here, we investigate the variability in microstructure of EBM-AM Ti-6Al-4V (Ti64) blocks, built with different beam fill strategies.
To achieve statistically significance in our characterization approach and be able to correlate the results with subsequent mechanical property measurements, we quantify the complex variations in microstructural features, such as alpha lath thickness, beta phase width and phase fraction, at well-chosen locations throughout the AM build. SEM and EBSD images as well as EDS maps were acquired. The quantification of microstructural features has been automated using specific MIPAR software recipes. EDS maps provide correlative information about local chemical composition variations. These results, obtained from EBM-AM Ti64 blocks, are correlated to the thermal signatures used in the EBM process with varying beam fill strategies. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |