TY - CHAP

T1 - Friction extrusion processing of aluminum powders

T2 - 26th International ESAFORM Conference on Material Forming 2023

AU - Chan, Chang Yin Cheng

AU - Rath, Lars

AU - Suhuddin, Uceu F.H.

AU - Klusemann, Benjamin

N1 - Conference code: 26

PY - 2023/4/19

Y1 - 2023/4/19

N2 - 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.

AB - 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.

KW - Aluminum

KW - Friction Extrusion

KW - Powder Consolidation

KW - Solid-State Processing

KW - Engineering

KW - Aluminium

KW - Friction extrusion

KW - Powder Consolidation

KW - Solid-State Processing

UR - http://www.scopus.com/inward/record.url?scp=85160238616&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/8416876d-252b-3c6b-b449-b736b93cea27/

U2 - 10.21741/9781644902479-56

DO - 10.21741/9781644902479-56

M3 - Article in conference proceedings

AN - SCOPUS:85160238616

SN - 978-1-64490-246-2

VL - 1

T3 - Materials Research Proceedings

SP - 515

EP - 522

BT - Material Forming

A2 - Madej, Lukasz

A2 - Sitko, Mateusz

A2 - Perzynski, Konrad

PB - MaterialsResearchForum LLC

CY - Millersville

Y2 - 19 April 2023 through 21 April 2023

ER -