About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
Solidification Mechanisms during Selective Laser Melting of Binary Ni-Cu, Ni-Al and Ni-Zr Alloys |
Author(s) |
Clara Galera-Rueda, María Teresa Pérez-Prado, Javier Llorca |
On-Site Speaker (Planned) |
Javier Llorca |
Abstract Scope |
Alloying additions play a critical role on the development of microstructures during selective laser melting (SLM). Most of the work on SLM has been carried out in multicomponent alloys and there is limited information about the influence of each alloying element on the solidification processes. Powders of pure Ni and three binary alloys (Ni-10%wt. Al, Ni-20%wt. Cu, and Ni-7%wt. Zr) were prepared by atomization to manufacture samples by SLM. It was found that the addition of Cu to Ni results in grain growth and texture strengthening; the addition of Al to Ni leads also to grain growth and to a change in the dominant texture component, which is related to the precipitation of Ni3Al. Finally, the intense segregation of Ni5Zr in Ni-Zr leads to a refined isotropic microstructure. The mechanisms responsible for this behavior are discussed and their influence on the nucleation of defects (pores, cracks) is analyzed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Copper / Nickel / Cobalt, |