Manufacture and Mechanical Properties of Batwing-Type Al Cellular Metamaterials by Selective Laser Melting

作者：Yuan, Gaoqian; Zhu, Qing; Li, Kezhuo; Zhang, Jingzhe; Yang, Guodong; Wu, Jinbo; Han, Lei; Li, Faliang^*; Zhang, Haijun^*; Jia, Quanli; Zhang, Shaowei

来源：ADVANCED ENGINEERING MATERIALS, 2023, 25(17).

DOI：10.1002/adem.202201540

• batwing
• mechanical properties
• metamaterials
• selective laser melting
• triply periodic minimal surfaces

Designing metallic cellular structures with triply periodic minimal surfaces (TPMS) is a novel approach for preparing multifunctional and lightweight metamaterials. TPMS-structured Batwing Al cellular metamaterials are fabricated using selective laser melting. The mechanical performance, failure/deformation modes, and energy absorption capacity of the metamaterials are investigated. It is demonstrated in experimental results that the unit cell structure has a significant influence on the mechanical properties of the metamaterials, and that the sample with large wall thickness exhibits excellent mechanical properties and energy absorption capacity. Furthermore, the Gibson-Ashby equation is developed to estimate the mechanical properties of the Batwing-type Al cellular metamaterials. Herein, a theoretical foundation is provided in these findings for the engineering application of phase-pure Al, which is typically unsuitable as a structural material due to its low yield strength.

• 单位
  郑州大学