An Integrated Model for Prediction of Process-Structure-Property Relationship for Additively Manufactured Al-10Si-Mg Alloy

2020-01-1075

04/14/2020

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Event
WCX SAE World Congress Experience
Authors Abstract
Content
In this work, a process-structure-property relationship for additively manufactured Al-Si-Mg alloy was constructed, with the aid of an integrated multi-physics model. Specifically, first, a series of thermal simulations were performed to understand molten pool geometry under different additive manufacturing (AM) operating conditions, including laser beam power, scanning speed, and hatch spacing. The porosity formation was predicted based on thermal simulation results, which yield molten pool dimension information for predicting the lack-of-fusion porosity. Dream.3D was utilized to reconstruct synthetic microstructures with different volume fraction of porosity. Following that, with microporosity data as input, a widely employed Elasto-viscoplastic fast Fourier transformation (FFT) formulation was utilized to identify the structure-property-performance relationship, e.g. in the form of stress-strain curves, thus successfully constructed a full process-structure-property-performance (PSPP) map for the Al-Si-Mg alloy. Finally, by taking advantage of the PSPP map, the effective improvement of mechanical performance of AM product was analyzed through optimizing AM manufacturing conditions.
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DOI
https://doi.org/10.4271/2020-01-1075
Pages
9
Citation
Yang, W., Wang, Z., Yenusah, C., and Liu, Y., "An Integrated Model for Prediction of Process-Structure-Property Relationship for Additively Manufactured Al-10Si-Mg Alloy," SAE Technical Paper 2020-01-1075, 2020, https://doi.org/10.4271/2020-01-1075.
Additional Details
Publisher
Published
Apr 14, 2020
Product Code
2020-01-1075
Content Type
Technical Paper
Language
English