| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Microstructure, Defects, and Properties
|
| Presentation Title |
A-12: Structure-Property Correlation and Defect Evaluation of Graphene Reinforced Aluminium Composites Fabricated via Laser Powder Bed Fusion |
| Author(s) |
Vishal Yadav, N Sathish, Ma Qian, Xiaobo Chen, Tingting Song |
| On-Site Speaker (Planned) |
Vishal Yadav |
| Abstract Scope |
Laser powder bed fusion (LPBF) emerged as a promising manufacturing technique for fabricating high-performance metal matrix composites. This study explores the structure-property relationships in aluminum composites reinforced with 0.2 wt % of graphene, processed through LPBF. LPBF process parameters were optimized to achieve a defect-free composite. Systematic characterizations were conducted using Raman spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), electron back-scattered diffraction (EBSD), micro-computed tomography (micro-CT), and transmission electron microscopy (TEM), focusing on, grain size, dispersion of graphene, interfacial interactions, and defect analysis such as porosity and microcracks. Graphene addition into the aluminium matrix demonstrated substantial refinement in grain structure by heterogeneous nucleation and improvements in tensile strength and hardness. This work indicates that optimizing LPBF parameters is crucial for the development of high-performance graphene reinforced aluminium composites that are suitable for aerospace and automotive applications. |