Conference PaperParallel publicationPublished version DOI: 10.48548/pubdata-144

Friction extrusion processing of aluminum powders: Microstructure homogeneity and mechanical properties

Chronological data

Date of first publication2023-04-19
Date of publication in PubData 2024-01-25

Language of the resource

English

Related external resources

Variant form of DOI: 10.21741/9781644902479-56
Chan, Chang Yin-Cheng, Rath Lars, Suhuddin, Uceu F. H., Klusemann Benjamin (2023). Friction extrusion processing of aluminum powders: Microstructure homogeneity and mechanical properties, Materials Research Proceedings, Vol. 28, pp. 515-522.
Published in ISSN: 2474-3941
Materials Research Proceedings
Published in DOI: 10.21741/9781644902479
Material Forming. ESAFORM 2023. Materials Research Proceedings, Volume 28.

Related PubData resources

Abstract

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

Research project

Supported / Financed by

European Research Council

More information

DDC

620 :: Ingenieurwissenschaften und zugeordnete Tätigkeiten

Creation Context

Research