About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Symposium
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2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Presentation Title |
Development of Laser Based Modification Process for Water‑Atomized Powders for Additive Manufacturing Applications |
| Author(s) |
Taisei Yachi, Ayahito Saikai, Yuta Mizuguchi, Yoshinori Funada, Tsukasa Nakamura, Kazuki Makinoshima, Yu Sakon, Keisuke Takenaka, Yuji Sato, Masahiro Tsukamoto |
| On-Site Speaker (Planned) |
Taisei Yachi |
| Abstract Scope |
Powders used in metal additive manufacturing (AM) require high flowability, therefore, spherical gas‑atomized powders are generally employed. However, gas‑atomization suffers from low production yield and high manufacturing cost. As a means of addressing these issues, the use of low‑cost water‑atomized powders has gained attention. Nevertheless, water‑atomized powders exhibit poor flowability due to their irregular particle shapes and also contain higher oxygen levels.
In this study, a laser-based modification process for water‑atomized powders was developed. In this process, the powders were heated and melted in-flight using a laser with precisely controllable heat input, thereby promoting spheroidization driven by surface tension. As a result, the treated powders exhibited a fraction of spherical particles comparable to that of gas‑atomized powders, and an improvement in flowability was confirmed. |
| Proceedings Inclusion? |
Undecided |