A numerical approach for the modelling of forming limits in hot incremental forming of AZ31 magnesium alloy

Abstract

Magnesium alloys, because of their good specific material strength, can be considered attractive by different industry fields, as the aerospace and the automotive one. However, their use is limited by the poor formability at room temperature. In this research, a numerical approach is proposed in order to determine an analytical expression of material formability in hot incremental forming processes. The numerical model was developed using the commercial software ABAQUS/Explicit. The Johnson-Cook material model was used, and the model was validated through experimental measurements carried out using the ARAMIS system. Different geometries were considered with temperature varying in a range of 25–400 °C and wall angle in a range of 35–60°. An analytical expression of the fracture forming limit, as a function of temperature, was established and finally tested with a different geometry in order to assess the validity.

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“…Thus, friction would not only in uence extruding forces, but also affect the temperature distribution of the extrusion die. The temperature of the die increases with increasing friction coe cients [23][24][25].…”

Three pass incremental sheet forming: A new strategy for the manufacture of brass musical instruments

“…The authors taxonomize those techniques to attempt an automation of the processes to resemble the tools movements and ensure similar results in terms of material properties and components geometry. Campanella et al (2021) use numerical models to predict the formability of a magnesium alloy. An explicit formulation is used to predict the forming limit of the alloy.…”