About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
|
| Symposium
|
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
|
| Presentation Title |
Wetting Characteristics of Molten Titanium Particles under Substrate Preheating in LPBF |
| Author(s) |
Sato Yuji, Norio Yoshida, Yorihiro Yamashita, Takahisa Shobu, Masahiro Tsukamoto |
| On-Site Speaker (Planned) |
Sato Yuji |
| Abstract Scope |
Titanium exhibits poor wettability during LPBF owing to its high surface tension, leading to unstable melt behavior such as balling and spatter generation. In this study, the wetting characteristics of molten titanium were investigated by in-situ synchrotron X-ray imaging using a single Ti particle under vacuum conditions. The substrate temperature was varied from 25 °C to 500 °C. As a result, the contact angle decreased significantly from 148° to 32° with increasing temperature, demonstrating a remarkable improvement in wettability. Enhanced wetting promoted stable spreading of the molten particle and improved interfacial contact with the substrate. These findings indicate that substrate temperature strongly governs the wetting characteristics of molten titanium and contributes to stabilization of the LPBF process. |
| Proceedings Inclusion? |
Undecided |