Investigation of the Microstructure and Mechanical Characteristics of Lattice Structures Produced by Laser Powder Bed Fusion Method

A. Tamer Erturk; M. Enes Bulduk; Gürkan Tarakçi; Gökhan Özer; Eser Yarar

doi:10.1007/s12540-021-01038-y

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자료유형: 학술저널

저자정보: A. Tamer Erturk (Kocaeli University) M. Enes Bulduk (Fatih Sultan Mehmet Vakif University) Gürkan Tarakçi (Fatih Sultan Mehmet Vakif University) Gökhan Özer (Fatih Sultan Mehmet Vakif University) Eser Yarar (Kocaeli University)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.28 No.1

발행연도: 2022.1

수록면: 155 - 167 (13page)

DOI: 10.1007/s12540-021-01038-y

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This study includes experimental research conducted to produce lattice structures and to examine their mechanical properties by taking advantage of the design freedom provided by additive manufacturing. Much of the existing literature involvesmainly process parameters on mechanical behaviors. Thus, more lattice geometry studies are needed. In this study, diferentlattice structures designed according to the unit cell types selected through the SpaceClaim program were produced usingAlSi10Mg powder material with the laser powder bed fusion (LPBF) method the metal additive manufacturing productionmethods. Cell sizes, Maxwell criterion, relative densities, and mechanical behaviors under semi-static compression forcewere investigated. It was concluded that with increasing relative density, the strength increased, and the structures withstress-dominating were more resistant than those with bending-dominating strength. It was determined that the mechanicalproperties of lattices depended on unit cell design and LPBF process parameters. The C1 and C2 coefcients of latticesproduced by the LPBF process included in the Gibson and Ashby equation were determined.

#Additive manufacturing · Lattice structure · Laser powder bed fusion · Compression test

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