Friction extrusion processing of aluminum powders: Microstructure homogeneity and mechanical properties
CHAN Chang Yin-Cheng, RATH Lars, SUHUDDIN Uceu F. H., KLUSEMANN Benjamin
download PDFAbstract. Friction 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.
Keywords
Friction Extrusion, Solid-State Processing, Aluminum, Powder Consolidation
Published online 4/19/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: CHAN Chang Yin-Cheng, RATH Lars, SUHUDDIN Uceu F. H., KLUSEMANN Benjamin, Friction extrusion processing of aluminum powders: Microstructure homogeneity and mechanical properties, Materials Research Proceedings, Vol. 28, pp 515-522, 2023
DOI: https://doi.org/10.21741/9781644902479-56
The article was published as article 56 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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