Page 105 - MSAM-4-2

Materials Science in

Additive Manufacturing

ORIGINAL RESEARCH ARTICLE
Impact behavior of AlSi10Mg porous structures

with varying single-unit cell rotation angles
fabricated via laser powder bed fusion

1
Xuezheng Yue 1 , Hulin Tang , Songhao Lu , Rusheng Zhao 3 , Boyoung Hur ,
4
2
Shiyue Guo *, and Jincheng Wang *
5
6,7
1 Additive Manufacture International Lab, School of Materials Science and Engineering, University of
Shanghai for Science and Technology, Shanghai, China
2 Shanghai Micro Electronics Equipment (Group) Co., Ltd, Shanghai, China
3 Department of Aerospace Engineering, Graduate School of Systems Design, Tokyo Metropolitan
University, Tokyo 1910065, Japan.
4 Department of Nano Advance Material, Gyeongsang National University, Jinju, South Gyeongsang,
Korea
5 Longzhong Lab, Wuhan University of Technology, Wuhan, Hubei, China
6 Department of Mechanical Engineering, School of Engineering, The University of Western Australia,
Perth, Western Australia, Australia
7 Department of Mechanical Engineering, Faculty of Engineering and Information Technology, The
University of Melbourne, Melbourne, Victoria, Australia
Abstract
*Corresponding authors:
Shiyue Guo
(guoshihiyue@lz-lab.com) Porous structures offer lightweight design and geometric flexibility for applications
Jincheng Wang in transportation and bioengineering. Additive manufacturing, particularly laser
(jincheng.wang@uwa.edu.au)
powder bed fusion (LPBF), enables the fabrication of complex porous architectures.
Citation: Yue X, Tang H, Lu S, et al. However, achieving an optimal balance between weight reduction and mechanical
Impact behavior of AlSi10Mg porous performance remains challenging. Therefore, further investigation into the design of
structures with varying single-unit
cell rotation angles fabricated via porous structures is essential. This study explores the dynamic mechanical behavior
laser powder bed fusion. Mater Sci of porous AlSi10Mg structures designed using a parametric modeling approach and
Add Manuf. 2025;4(2):025130019. the Voronoi tessellation algorithm. The structures, fabricated via LPBF, feature varying
doi: 10.36922/MSAM025130019
single-unit cell rotation angles and porosities. The dynamic mechanical behaviors
Received: March 29, 2025 were experimentally investigated under different impact energies to assess the
Revised: April 18, 2025 influence of single-unit cell rotation on impact properties, complemented by finite
element analysis simulations. The results indicate that a slight decrease in porosity
Accepted: April 23, 2025
by 10% (from 90% to 80%) significantly enhances energy absorption and impact
Published online: May 16, 2025 resistance while maintaining lightweight features. Significant variations are observed
Copyright: © 2025 Author(s). in peak contact force and energy absorption trends. The results demonstrate that
This is an Open-Access article single-unit cell rotation improves impact resistance in certain cases, leading to
distributed under the terms of the significant enhancements in energy absorption, specific energy absorption, and
Creative Commons Attribution
License, permitting distribution, specific strength, which increased by approximately 18.9% (P90), 17.1% (P90), and
and reproduction in any medium, 79.5% (P80), respectively, for the dodecahedral (Dodeca)-C structure compared to
provided the original work is the original Dodeca-A counterpart at impact of 124 J. In addition, Dodeca-C P80
properly cited.
showed a remarkable 73.1% increase in energy absorption compared to Dodeca-A
Publisher’s Note: AccScience P80 at a higher impact energy of 248 J. This study provides insights for optimizing
Publishing remains neutral with
regard to jurisdictional claims in porous structures while maintaining consistent unit cell configurations and identical
published maps and institutional porosity, with rotating unit cell angles enhancing impact resistance.
affiliations.

Keywords: Laser powder bed fusion; AlSi10Mg; Porous structures; Impact properties;
Energy absorption; X-ray computed tomography

Volume 4 Issue 2 (2025) 1 doi: 10.36922/MSAM025130019