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Main Title: Extrusion of Aluminum Tubes with Axially Graded Wall Thickness and Mechanical Characterization
Author(s): Negendank, Maik
Müller, Sören
Reimers, Walter
Type: Article
Language Code: en
Abstract: In this study the indirect extrusion of seamless aluminum tubes with variable wall thickness was investigated. Therefore, an axially moveable stepped mandrel was applied. Investigations revealed that wall thickness transitions can either be graded over the tube length or very sharp. The microstructures in thin-walled and thick-walled tube sections were investigated. The local variation of the extrusion ratio and with that the tube wall thickness, product velocity and product temperature during the process lead to significantly different local microstructures at TB=400 °C. At TB=500 °C the microstructure was homogeneously recrystallized with similar grain size in all different tube sections. Furthermore, the mechanical tube properties were characterized by three point bending tests.
Issue Date: 25-Aug-2014
Date Available: 19-May-2020
DDC Class: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): extrusion
variable wall thickness
tailored tubes
three point bending test
Journal Title: Procedia CIRP
Publisher: Elsevier
Publisher Place: Amsterdam [u.a.]
Volume: 18
Publisher DOI: 10.1016/j.procir.2014.06.098
Page Start: 3
Page End: 8
EISSN: 2212-8271
Appears in Collections:FG Metallische Werkstoffe » Publications

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