Numerical investigation and an effective modelling on the Selective Laser Melting (SLM) process with aluminium alloy 6061

The Selective Laser Melting (SLM) fabrication process is complex and it is crucial to understand the phenomena that will occur to better control it. In this paper, an FE model on SLM that considers powder-to-solid transition together with an effective method to achieve volume shrinkage and material...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2015-01, Vol.80, p.288-300
Main Authors: Loh, Loong-Ee, Chua, Chee-Kai, Yeong, Wai-Yee, Song, Jie, Mapar, Mahta, Sing, Swee-Leong, Liu, Zhong-Hong, Zhang, Dan-Qing
Format: Article
Language:English
Subjects:
3D printing
Additive manufacturing
Aluminum base alloys
Heat transfer
Laser beam melting
Lasers
Mass transfer
Mathematical models
Melting
Melts
Numerical modelling
Progressions
Rapid prototyping
Selective Laser Melting
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Summary:The Selective Laser Melting (SLM) fabrication process is complex and it is crucial to understand the phenomena that will occur to better control it. In this paper, an FE model on SLM that considers powder-to-solid transition together with an effective method to achieve volume shrinkage and material removal has been created. Experiments were conducted to validate the model. A detailed discussion on the progression of the melt pool and the rate of temperature change has been made. Parametric study with the laser power and scan speed as variables has been conducted to identify their relationships with the melt dimensions, melting and evaporation of powder and rates of temperature change.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2014.09.014