Numerical and Experimental Study for Al4043A Aluminium-Silicium Alloy Fabricated by Wire Arc Additive Manufacturing under Dynamic Tests

Abstract

The paper presents an experimental investigation of the impact properties and imperfections of the 3D printed Al4043A aluminium-silicium alloy using wire-arc additive manufacturing. Using an experimental program based on factorial experiments, correlations between the main WAAM process parameters and the related properties of the deposition were determined. Charpy impact strength investigations, using standard notched specimens, were performed on an Instron CEAST 9050 instrumented Charpy impact pendulum system following the ISO 148-1 standard. During the experimental tests, the brittle behaviour of the specimens could be observed. After the experimental tests, the impact behaviour was numerically analysed, showing a relatively good correlation between the results.