A Comparative Study on Laser Powder Bed Fusion of In718 Powder Produced by Gas Atomization and Plasma Rotating Electrode Process
The effects of powder feedstocks prepared by different methods on the processibility of the powders and the performance of final components have largely been unexplored in metal additive manufacturing (MAM). In this paper, we conducted a comparative study on the laser powder bed fusion (LPBF) process of Inconel 718 (IN718) powder produced by gas atomization (GA) and plasma rotating electrode process (PREP), respectively. For GA and PREP powders, powder characteristics, such as chemical composition, particle size distribution (PSD), and morphology are initially characterized and compared. Parallel single-track experiments and cuboid components printing have also been designed and carried out on the LPBF process by using these two types of powders. Forming quality and mechanical properties of different components are also systematically evaluated. The results show that the powder feedstocks do not significantly affect the optimal mechanical properties in the LPBF process. However, the PREP powder with smooth surface, high sphericity, and better flowability can obtain a larger processing window and more stable mechanical properties than the GA powder
Year of publication: |
[2022]
|
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Authors: | Ruan, Gang ; Liu, Chang ; Qu, Hongqiao ; Guo, Chuan ; Li, Gan ; Li, Xinggang ; Zhu, Qiang |
Publisher: |
[S.l.] : SSRN |
Saved in:
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