FEM Numerical and Experimental Work on Extrusion Welding of 7021 Aluminum Alloy.

ABSTRACT: Extrusion welding of AlZnMg alloys encounters great technological difficulties in practice associated with high shaping forces and the low quality of longitudinal welds. Three different chemical compositions of 7021 aluminum alloy, differing in terms of Zn and Mg contents, were used in the first stage of the research. The laboratory device modelling the behavior of metal in welding chambers of the porthole die was applied to examine the ability of 7021 alloys to produce high-quality joints. The weldability tests were carried out for different welding temperatures-400, 450 and 500 °C-and for a fixed welding pressure of 300 MPa. The microstructural effects in pressure-welds were evaluated with the use of OM and SEM/EDS. The temperature-pressure parameters in the welding chambers were analyze

SUBMITTER: Lesniak D 

PROVIDER: S-EPMC10488767 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature