Metals and Materials International ( IF 3.3 ) Pub Date : 2021-09-10 , DOI: 10.1007/s12540-021-01038-y A. Tamer Erturk 1 , Eser Yarar 1 , M. Enes Bulduk 2 , Gürkan Tarakçi 2 , Gökhan Özer 2
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Abstract
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 involves mainly process parameters on mechanical behaviors. Thus, more lattice geometry studies are needed. In this study, different lattice structures designed according to the unit cell types selected through the SpaceClaim program were produced using AlSi10Mg powder material with the laser powder bed fusion (LPBF) method the metal additive manufacturing production methods. Cell sizes, Maxwell criterion, relative densities, and mechanical behaviors under semi-static compression force were investigated. It was concluded that with increasing relative density, the strength increased, and the structures with stress-dominating were more resistant than those with bending-dominating strength. It was determined that the mechanical properties of lattices depended on unit cell design and LPBF process parameters. The C1 and C2 coefficients of lattices produced by the LPBF process included in the Gibson and Ashby equation were determined.
Graphic Abstract
中文翻译：
激光粉末床熔融法制备的晶格结构的微观结构和力学特性研究
摘要
该研究包括通过利用增材制造提供的设计自由度来生产晶格结构并检查其机械性能的实验研究。许多现有文献主要涉及机械行为的工艺参数。因此，需要更多的晶格几何研究。在这项研究中，根据通过 SpaceClaim 程序选择的晶胞类型设计的不同晶格结构使用 AlSi10Mg 粉末材料通过激光粉末床融合 (LPBF) 方法和金属增材制造生产方法生产。研究了细胞尺寸、麦克斯韦准则、相对密度和半静态压缩力下的机械行为。得出的结论是，随着相对密度的增加，强度增加，以应力为主的结构比以弯曲强度为主的结构具有更高的抵抗力。已确定晶格的机械性能取决于晶胞设计和 LPBF 工艺参数。确定了由包含在 Gibson 和 Ashby 方程中的 LPBF 过程产生的晶格的 C1 和 C2 系数。
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