About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
Presentation Title |
Clarifying the Relationships between Ductility, Microstructure and Strain Localization in Additively Manufactured Ti-6Al-4V |
Author(s) |
Francois Bourdin, Damien Texier, Florence Pettinari, Joel Douin, Samuel Hemery |
On-Site Speaker (Planned) |
Samuel Hemery |
Abstract Scope |
Additively manufactured Ti-6Al-4V exhibits heterogeneous microstructure depending on the processing route. The limited ductility is often an obstacle to a wider use of additively manufactured parts. Therefore an improved understanding of the relationship between the microstructure and the tensile ductility is of interest to the community. This was investigated considering Ti-6Al-4V specimens manufactured using different additive manufacturing processes. In addition to an assessment of tensile properties, tensile tests were carried out in situ in an optical microscope and combined with digital image correlation to study strain localization. Complementary SEM and EBSD analyses were used to characterize the microstructure and the correlation with heterogeneous deformation. A relation between strain localization and ductility was established, which allowed to clarify the anisotropy in ductility and the role of processing parameters on the mechanical response. Insights into microstructure optimization will finally be discussed to improve the ductility of additively manufactured Ti-6Al-4V. |
Proceedings Inclusion? |
Planned: |