Effect of energy density on down surface characteristics of AlSi10Mg alloy fabricated via selective laser melting.

Autor:	Kang C; Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangeung, 25440, Republic of Korea.; Division of Materials Science and Engineering, Hanyang University, Seoul, 04763, Republic of Korea., Kim GH; Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangeung, 25440, Republic of Korea., Kim WR; Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangeung, 25440, Republic of Korea., Lee TW; Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangeung, 25440, Republic of Korea., Kang HS; Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangeung, 25440, Republic of Korea., Ham MJ; Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangeung, 25440, Republic of Korea., Choi SJ; Division of Materials Science and Engineering, Hanyang University, Seoul, 04763, Republic of Korea., Choi HY; LIG Nex1 Co., Ltd., Seongnam, 13488, Republic of Korea., Kim KS; LIG Nex1 Co., Ltd., Seongnam, 13488, Republic of Korea., Kim HT; LIG Nex1 Co., Ltd., Seongnam, 13488, Republic of Korea., Kim HG; Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangeung, 25440, Republic of Korea.
Jazyk:	angličtina
Zdroj:	Heliyon [Heliyon] 2024 Oct 18; Vol. 10 (20), pp. e39522. Date of Electronic Publication: 2024 Oct 18 (Print Publication: 2024).
DOI:	10.1016/j.heliyon.2024.e39522
Abstrakt:	The correlation between surface roughness and energy density in the down surface area of AlSi10Mg alloy manufactured by selective laser melting was analyzed. This study investigated the relationship between the contour melt pool shape and surface roughness in the down surface area across an energy density range of 10-150 J/mm³. As the energy density increased, the contour melt pool in the down surface area became more stable, which significantly influenced surface roughness. Low energy density resulted in the unstable formation of the contour melt pool, leading to a deterioration in surface quality, whereas high energy density promoted the stable formation of the melt pool. Sufficient energy density is essential for the complete formation of the contour melt pool on the down surface, which plays a crucial role in reducing surface roughness. However, within the energy density range where the contour melt pool is fully formed, keyhole defects may occur, and it can be anticipated that these defects may worsen at energy densities exceeding the critical threshold. Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (© 2024 The Authors.)
Databáze:	MEDLINE
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