Study on the effects of manufacturing parameters on the dynamic properties of AlSi10Mg under dynamic loads using Taguchi procedure. (November 2022)

• Record Type: Journal Article
• Authors: Amir, Ben; Gale, Yuval; Sadot, Alon; Samuha, Shmuel; Sadot, Oren
• Is Part Of: Materials & design. Volume 223(2022)
• Publication Date: 2022-11
• Subjects: AlSi10Mg -- Dynamic loading -- Split Hopkinson pressure bar -- Laser powder bed fusion -- Design of experiments; AM Additive Manufacturing -- ANOVA Analysis of variance -- DoE Design of experiments -- Ed Energy density -- EtF Elongation to fracture -- Hd Hatching distance -- LPBF Laser powder bed fusion -- Or Build orientation -- P Laser power -- SHPB Split-Hopkinson pressure bar -- SP Scanning pattern -- t Thickness of the powder layer -- V Scanning speed -- MPB Melt pool boundaries; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2022.111125
• Languages: English
• ISSNs: 0264-1275

Abstract

Graphical abstract: Highlights: The effect of the manufacturing parameter on the dynamic mechanical parameters of 3D printed AlSi10Mg was investigated. Taguchi's "design of experiments" procedure pointed out the different effects of each manufacturing parameter on the dynamic mechanical properties. The relative angle between the building and the dynamic load directions most affects the mechanical properties. The deformation and fracture plains are located on the edges of the melting pools. The maximum dynamic stress was found to correlate with the effective length of the deformation and fracture plains linearly. Abstract: This study presents the effect of additive manufacturing (AM) laser powder bed fusion (LPBF) on the dynamic properties of an AlSi10Mg alloy. AlSi10Mg products manufactured using the LPBF process allow tailoring the dynamic properties to the needs of applications. Hence, we created a design of experiments based on the Taguchi method to study the effects of the most influential LPBF process parameters. The chosen parameters were laser power, scanning speed, hatching distance, scanning pattern, and fabrication orientation. Using a split Hopkinson pressure bar experimental system, the maximum dynamic stress (MDS) and elongation until fracture were characterized. The dynamic properties were significantly affected: up to a 30% increase in the MDS, without a reduction in elongation was observed. Sensitivity analysis revealed that the fabrication orientation significantly influences the dynamic properties. This study quantitatively correlates the macrostructure of the melt pools and their dynamic properties. There is a close to linear dependency between the crack path following the melt pool boundaries to the MDS. The results obtained from this study can assist engineers in estimating their dynamic response to materials by analyzing the LPBF AlSi10Mg macrostructure.