| Biography | |
|---|---|
 Dr. Xiaopeng Li The School of Mechanical and Manufacturing Engineering, The University of New South Wales (UNSW Sydney), Australia |
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| Title: Additive manufacturing of aluminium: alloy design and process optimisation | |
| Abstract: Additive manufacturing, in particular laser powder bed fusion technique (LPBF), has been widely used to fabricate various aluminium alloys including Al-Si, 6061, 7075 alloys in the past decade with the aim to target applications concerning high strength and light-weighted structures. However, due to intrinsic materials characteristics, e.g., solidification cracking, not many aluminium alloys have satisfactory LPBF processability. Therefore, it is in urgent need to design and develop more suitable aluminium alloys and their composites for LPBF manufacturing. Meanwhile, once new aluminium alloys are designed, it is also of great importance to optimise the LPBF process to achieve high quality components without any apparent processing defects such as cracks or porosity. Moreover, how to achieve the desired mechanical properties in these aluminium alloys via manipulating the LPBF optimised parameters is another interesting and profound topic. In this presentation, a novel in-situ alloy design process was first introduced to develop nanoparticle decorated aluminium alloys for LPBF and the resultant microstructure along with mechanical properties were investigated. Following this, a machine-learning assisted LPBF process optimisation process for aluminium alloys is described in detail to provide new insights into the microstructure control and properties manipulation of LPBF fabricated aluminium alloys. | |
