TY - JOUR

T1 - Microstructure evolution and texture development during production of homogeneous fine-grained aluminum wire by friction extrusion

AU - Suhuddin, Uceu F.H.

AU - Rath, Lars

AU - Halak, Ricardo M.

AU - Klusemann, Benjamin

N1 - This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 Research and Innovation Programme (grant agreement No 101001567 ). Publisher Copyright: © 2023 The Authors

PY - 2023/11/1

Y1 - 2023/11/1

N2 - This study aims to understand the microstructure evolution and texture development during friction extrusion of aluminum alloys, focusing on AA7075 as exemplary alloy system. Electron backscatter diffraction technique has been employed to obtain crystallographic data from various regions in front of the die and in the wire. It can be deduced that the combination of continuous dynamic recrystallization and geometric dynamic recrystallization mainly govern the formation of a fine-grained structure, however discontinuous dynamic recrystallization may also play a role at high temperature. The global shear deformation during the process was characterized as a simple shear deformation with dominant B/B¯ simple shear texture components. The material flow is mainly driven by the in-plane shear strain and the extrusion-induced shear strain that are determined by die rotational speed and extrusion force, respectively. The in-plane shear strain strongly affects the formation of a homogeneous fine-grained microstructure in the aluminum wire. In this regard, a novel material flow model for friction extrusion has been proposed.

AB - This study aims to understand the microstructure evolution and texture development during friction extrusion of aluminum alloys, focusing on AA7075 as exemplary alloy system. Electron backscatter diffraction technique has been employed to obtain crystallographic data from various regions in front of the die and in the wire. It can be deduced that the combination of continuous dynamic recrystallization and geometric dynamic recrystallization mainly govern the formation of a fine-grained structure, however discontinuous dynamic recrystallization may also play a role at high temperature. The global shear deformation during the process was characterized as a simple shear deformation with dominant B/B¯ simple shear texture components. The material flow is mainly driven by the in-plane shear strain and the extrusion-induced shear strain that are determined by die rotational speed and extrusion force, respectively. The in-plane shear strain strongly affects the formation of a homogeneous fine-grained microstructure in the aluminum wire. In this regard, a novel material flow model for friction extrusion has been proposed.

KW - Aluminum alloy

KW - Dynamic recrystallization

KW - Friction extrusion

KW - Material flow

KW - Simple shear texture

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85169807180&partnerID=8YFLogxK

U2 - 10.1016/j.matchar.2023.113252

DO - 10.1016/j.matchar.2023.113252

M3 - Journal articles

AN - SCOPUS:85169807180

VL - 205

JO - Materials Characterization

JF - Materials Characterization

SN - 1044-5803

M1 - 113252

ER -