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Resource typeConference Paper
Title(s)Friction extrusion processing of aluminum powders: Microstructure homogeneity and mechanical properties
CreatorChan, Chang Yin-Cheng  0000-0002-9684-4720 (Helmholtz-Zentrum Hereon  03qjp1d79)
Rath, Lars  0000-0002-7497-5201 (Helmholtz-Zentrum Hereon  03qjp1d79)
Suhuddin, Uceu  0000-0002-4000-4036 (Helmholtz-Zentrum Hereon  03qjp1d79)
Klusemann, Benjamin  0000-0002-8516-5087  142865192 (Institut für Produktionstechnik und -systeme (IPTS), Leuphana Universität Lüneburg  02w2y2t16)
AbstractFriction extrusion (FE) is a solid-state process categorized as an energy-efficient process, utilizing the intrinsic friction-induced heat to plasticize and manufacture fully consolidated extrudate from various feedstocks, i.e. solid billet, chips and powder. Friction in the relative motion between the feedstock and the non-consumable die generates heat as well as imposes severe plastic deformation; this combination enables dynamic recrystallization and refinement of the microstructure. This study demonstrates the feasibility of directly extruding aluminum alloy powder into fully consolidated wire in a single step process. The extrudate is free of noticeable defects and shows predominantly homogeneous microstructure along the cross-section of the wire. The powder evolution upon passing through the die orifice was investigated in terms of morphology and microstructure. Additionally, the mechanical properties of the extrudate, i.e. microhardness and ultimate tensile strength, were compared to solid billets of AA7075 in different temper states and shows adequate mechanical properties without possible post-heat treatments.
KeywordsFriction Extrusion; Solid-State Processing; Aluminum; Powder Consolidation
Year of publication in PubData2024
Publishing typeParallel publication
Publication versionPublished version
Date issued2023-04-19
Creation contextResearch
Published byMedien- und Informationszentrum, Leuphana Universität Lüneburg
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Resource typeConference Proceeding
Title of the resource typeMaterials Research Proceedings
IdentifierDOI: 10.21741/9781644902479-56
Publication year2023
Pages515 - 522
PublisherAssociation of American Publishers
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