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Resource typeJournal Article
Title(s)Changes in processing characteristics and microstructural evolution during friction extrusion of aluminum
CreatorHalak, Ricardo M. (Helmholtz-Zentrum Hereon  03qjp1d79)
Rath, Lars  0000-0002-7497-5201 (Helmholtz-Zentrum Hereon  03qjp1d79)
Suhuddin, Uceu  0000-0002-4000-4036 (Helmholtz-Zentrum Hereon  03qjp1d79)
dos Santos, Jorge F.  0000-0003-4289-4957 (Helmholtz-Zentrum Hereon  03qjp1d79)
Klusemann, Benjamin  0000-0002-8516-5087  142865192 (Institut für Produktionstechnik und -systeme (IPTS), Leuphana Universität Lüneburg  02w2y2t16)
AbstractThis study focuses on characterizing the microstructural evolution of the aluminum alloy 7075 in the friction extrusion process under different extrusion forces and die angles. Depending on these conditions, two fundamentally different extrusion types are found, showing significant differences in the process characteristics and microstructural evolution. One of the two extrusion types is associated with high extrusion force and low die angle, leading to fully recrystallized wires with average grain size around 1.2 μm. The microstructural analysis indicates that the microstructure present in the wires is generated in the charge material by the combination of tool geometry, load induced material flow and friction conditions in the initial stages of the friction extrusion process. The identified processing conditions and influencing factors introduce an alternative route for friction extrusion at low extrusion ratios, capable of producing completely refined wires.
KeywordsFriction Extrusion; Aluminum; Dynamic Recrystallization; Mechanical Properties; Ultra-Fine Grains
Year of publication in PubData2024
Publishing typeParallel publication
Publication versionPublished version
Date issued2022-03-12
Creation contextResearch
Published byMedien- und Informationszentrum, Leuphana Universität Lüneburg
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Resource typeJournal
Title of the resource typeInternational Journal of Material Forming
IdentifierDOI: 10.1007/s12289-022-01670-y
Publication year2022
Number typeArticle
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