| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Fabrication of Crack-free Aluminum Alloy 6061 Parts using Laser Foil Printing Additive Manufacturing Process |
| Author(s) |
Yu-Xiang Wang, Chia-Hung Hung |
| On-Site Speaker (Planned) |
Chia-Hung Hung |
| Abstract Scope |
In this paper, aluminum alloy 6061 (AA6061) parts were fabricated using a laser foil printing (LFP) process. The process window of AA6061 in LFP was investigated to optimize the process parameter for eliminating the formation of pores and cracks. Although AA6061 is challenging for laser additive manufacturing, the optimal laser power (700 W) and scanning speed (100 mm/s) were used to fabricate AA6061 parts with a high relative density (99.8%). The line energy density was controlled properly to effectively reduce porosity and no micro-cracks were found in any LFP-fabricated AA6061 parts. The hardness, X-Ray diffraction, and tensile strength of LFP-fabricated parts were measured and compared with the original foils. The hardness was enhanced from the original foil of 41 HV to the LFP-fabricated part of 70 HV. The orientation of preference of column grains in LFP-fabricated part was [200]. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |