Optimization of Laser Powder Bed Fusion Process for Forming Porous Ta Scaffold
| Autor: | Lin Gao, Yikai Wang, Xiao Qin, Naixin Lv, Zhiqiang Tong, Changning Sun, Dichen Li |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Metals, Vol 13, Iss 10, p 1764 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2075-4701 82292442 |
| DOI: | 10.3390/met13101764 |
| Popis: | To improve the performance of porous tantalum (Ta) manufactured by laser powder bed fusion (L-PBF) and meet its application requirements in medicine, the authors of this paper studied the influence of L-PBF process parameters on the strut surface morphology and mechanical performance. It was found that the powder layer thickness had a significant influence on the microstructure and mechanical properties based on statistical analysis. We proposed optimal process parameters of laser power of 150 W, scanning speed of 270 mm/s, thickness of 0.05 mm, and scanning spacing of 0.07 mm. After parameter optimization, we successfully obtained Ta samples with an elastic modulus of 1.352 ± 0.007 GPa and yield strength of 53.217 ± 0.114 MPa. The results show that the elastic modulus and yield strength of porous Ta samples with a porosity of 80% under the optimal process parameters are significantly superior to previous studies. The porous Ta scaffolds with higher mechanical properties fabricated with the optimized process parameters of L-PBF have significant value for applications in medicine. |
| Databáze: | Directory of Open Access Journals |
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