Journal ArticleParallel publicationPublished version DOI: 10.48548/pubdata-141

Changes in processing characteristics and microstructural evolution during friction extrusion of aluminum

Chronological data

Date of first publication2022-03-12
Date of publication in PubData 2024-01-23

Language of the resource

English

Related external resources

Variant form of DOI: 10.1007/s12289-022-01670-y
Halak, R. M., Rath, L., Suhuddin, U. F. H. R., dos Santos, J. F., Klusemann, B. (2022). Changes in processing characteristics and microstructural evolution during friction extrusion of aluminum. International Journal of Material Forming, 15(3), 24.
Published in ISSN: 1960-6206
International Journal of Material Forming

Related PubData resources

Abstract

This 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.

Keywords

Friction Extrusion; Aluminum; Dynamic Recrystallization; Mechanical Properties; Ultra-Fine Grains

Research project

Supported / Financed by

European Research Council

More information

DDC

620 :: Ingenieurwissenschaften und zugeordnete Tätigkeiten

Creation Context

Research