Interfacial bonding mechanism and length evaluation method of the longitudinal welds in the unsteady deformation process of porthole die extrusion of aluminum alloy profiles
In this work, a porthole die extrusion experiment was carried out on an aluminum alloy profile used for air-conditioning refrigerator ice box.Microstructural characterization and mechanical property tests were performed at different positions of a longitudinal weld in the profile head.The results indicated that, from the unsteady to steady extrusio