| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Titanium-based Materials: Processing, Microstructure and Material Properties
|
| Presentation Title |
Revealing Solidification Conditions during Laser Powder Bed Fusion of Ti-6Al-4V from EBSD |
| Author(s) |
Lu Yang, Wajira Mirihanage, Saranarayanan Ramachandran, Axieh Bagasol, Qiyu Guan, Weiguang Wang, David Browne, Denis Dowling |
| On-Site Speaker (Planned) |
Lu Yang |
| Abstract Scope |
Laser powder bed fusion (LPBF) is an additive manufacturing technique which can fabricate products layer by layer with desired shape and high material usage efficiency. Ti-6Al-4V is one of the most popular titanium alloys with good combination of light-weight and high strength as well as biocompatibility. The microstructure and properties of additively manufactured Ti-6Al-4V strongly depend on the solidification process and thermal conditions generated by process conditions including LPBF parameters. However, during additive manufacturing Ti-6Al-4V solidifies as high-temperature parent β phase, then transforms into room-temperature child α phase. Investigation of as-solidified parent microstructure based on electron back-scattered diffraction (EBSD) and reconstruction using the Burgers Orientation Relationship (BOR) has been achieved. The work presented in this contribution analyses the optimization of the reconstruction and applicability to controlling the microstructure and solidification defect formation during additive manufacturing. |