About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing: Materials Design and Alloy Development IV: Rapid Development
|
Presentation Title |
Microstructure Investigation of Ti15Mo and Compositionally Graded Ti+Ti15Mo Alloys Prepared by Additive Manufacturing |
Author(s) |
Tomas Krajnak, Miloš Janeček, Dalibor Preisler, Josef Stráský, Michal Brázda, Jaroslav Vavřík, Jan Džugan |
On-Site Speaker (Planned) |
Tomas Krajnak |
Abstract Scope |
The present study characterises the microstructure of homogenous Ti15Mo and compositionally graded Ti+Ti15Mo alloys prepared by direct energy/laser deposition. The composition in the gradient material varied from Ti(70%)-Ti15Mo(30%) to Ti(30%)-Ti15Mo(70%) by 5% in the adjacent layers. Microstructure investigations in the vertical cut were performed by precise microhardness mapping and complemented by microstructural observations by SEM and energy dispersive spectroscopy (EDS). It was found that microhardness of gradient Ti+Ti15Mo alloy varied in the range of 300-550 HV in contrast to the almost constant HV value of ~330 HV in the Ti15Mo sample. On the other hand, the microstructure of both alloys consists mostly of columnar grains of similar size, orientated perpendicular to the plotted layers. In addition, the influence of the phase composition on the HV values is discussed in detail. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Titanium, Characterization |