| About this Abstract |
| Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
|
| Symposium
|
Broad Issues in AM
|
| Presentation Title |
Direct Selective Laser Synthesis of CuCrFeTiNiAl High Entropy Alloy from Elemental Powders through Selective Laser Melting |
| Author(s) |
Joni Chandra Dhar, Lazaro Lopez Mendez, Shanshan Zhang, Ben Xu, Jasim Uddin, Jianzhi Li |
| On-Site Speaker (Planned) |
Joni Chandra Dhar |
| Abstract Scope |
This study investigated synthesis of CuCrFeNiTiAl high entropy alloy (HEA) from pure elements using selective laser melting (SLM). The objectives are to validate the feasibility of the HEA fabrication from elemental powder materials, and to examine the effect of different laser energy inputs on the microstructures formed. The as-built samples under high, medium and low energy densities were characterized by X-ray diffraction (XRD), and the microstructures were observed using scanning electron microscopy (SEM). The XRD results showed that five major crystal structure phases (hexagonal, monoclinic, orthorhombic, body-centered cubic and rhombohedral) were present in all samples. Fine-grained phases were noticed on the formed surface with non-uniform microstructural distribution. Such phases in high and low energy density samples were observed polygonal while round-shaped microstructures were observed for samples prepared under medium energy density conditions. Also, the grain size was proportional to energy levels of the fabrication process. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |