| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPU-13: Microstructure of Rapidly Solidified M2 High-Speed Steel by Multi-Beam Laser Melting |
| Author(s) |
Takahashi Masamitsu, Kholqillah Ardhian Ilman, Yorihiro Yamashita, Takahiro Kunimine |
| On-Site Speaker (Planned) |
Takahashi Masamitsu |
| Abstract Scope |
This study explored the processing of single beads composed of M2 high-speed steel (HSS) using the multi-beam laser melting method and a modified multi-beam laser focusing technique. Especially, the effects of multi-beam laser focusing position and laser power on rapidly solidified microstructure and temperature variation of the M2 HSS during processing were investigated. Temperature measurements during bead processing were conducted using a thermoviewer. Observations of the bead morphology and its microstructure were performed by scanning electron microscopy. Phase identifications were performed by the X-ray diffraction and electron backscatter diffraction analyses. It was found that the higher multi-beam laser focusing position led to the higher hardness of the formed bead at the same laser power. These results will be discussed by considering microstructural characterization of the rapidly solidified M2 HSS. The findings provide valuable scientific insights into the surface modification processing of the HSS by laser melting. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Iron and Steel, Surface Modification and Coatings, Solidification |