| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Effect of Electropulsing on Ti-6Al-4V Fabricated by Selective Laser Melting |
| Author(s) |
Seong Ho Lee, Jinyeong Yu, Seho Cheon, Jung Gi Kim, Taekyung Lee |
| On-Site Speaker (Planned) |
Seong Ho Lee |
| Abstract Scope |
Selective laser melting (SLM) enables to fabricate a complex 3D product using Ti-6Al-4V alloy powders. Microstructural inhomogeneity, such as a columnar structure, in SLM Ti-6Al-4V leads to deterioration in mechanical properties. This study verified electropulsing treatment (EPT) to eliminate the columnar structure to exploit its rapid heating capability. The microstructural evolution was compared to that caused by the traditional method of furnace heat treatment (FHT). The rapid heating achieved by EPT effectively suppressed a grain growth. In addition, this work also investigated the effect of electropulsing anisotropy on microstructural evolution. It is noted that the columnar structure disappeared by EPT along the building direction at a current density of 16 A·mm−2, whereas the disappearance occurred at a higher density of 20 A·mm−2 along the scanning direction. Both thermal and athermal effects were discussed to elucidate the role of EPT in increasing the microstructural homogeneity. |
| Proceedings Inclusion? |
Planned: |