TY - JOUR

T1 - Improving mechanical properties of chip-based aluminum extrudates by integrated extrusion and equal channel angular pressing (iECAP)

AU - Haase, M.

AU - Ben Khalifa, N.

AU - Tekkaya, A. E.

AU - Misiolek, W. Z.

PY - 2012/3/30

Y1 - 2012/3/30

N2 - In order to improve the mechanical properties of profiles extruded from aluminum chips, a four turn equal channel angular pressing tool was integrated into an extrusion die (iECAP die). AA6060 aluminum alloy turning chips were cold pre-compacted to chip-based billets and hot extruded through the iECAP die on a conventional forward extrusion press. Mechanical properties and microstructure of the chip-based billets extruded through the iECAP die were investigated and compared to those extruded through a conventional flat-face die and a porthole die. To evaluate the performance of the iECAP processed chip-based profiles, conventional cast billets were extruded through the flat-face die as a reference material. To investigate the influence of temperature on mechanical properties and microstructure of chip-based profiles, the extrusion was performed at 450. °C and 550. °C.Tensile tests revealed superior mechanical properties of the chip-based billets extruded through the iECAP die in comparison to chip-based billets extruded through the flat-face and the porthole die as well as to cast billets extruded through the flat-face die.

AB - In order to improve the mechanical properties of profiles extruded from aluminum chips, a four turn equal channel angular pressing tool was integrated into an extrusion die (iECAP die). AA6060 aluminum alloy turning chips were cold pre-compacted to chip-based billets and hot extruded through the iECAP die on a conventional forward extrusion press. Mechanical properties and microstructure of the chip-based billets extruded through the iECAP die were investigated and compared to those extruded through a conventional flat-face die and a porthole die. To evaluate the performance of the iECAP processed chip-based profiles, conventional cast billets were extruded through the flat-face die as a reference material. To investigate the influence of temperature on mechanical properties and microstructure of chip-based profiles, the extrusion was performed at 450. °C and 550. °C.Tensile tests revealed superior mechanical properties of the chip-based billets extruded through the iECAP die in comparison to chip-based billets extruded through the flat-face and the porthole die as well as to cast billets extruded through the flat-face die.

KW - Aluminum alloy recycling

KW - Chip extrusion

KW - Die design

KW - Equal channel angular pressing (ECAP)

KW - Mechanical properties

KW - Microstructure

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=84857626087&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2012.01.081

DO - 10.1016/j.msea.2012.01.081

M3 - Journal articles

AN - SCOPUS:84857626087

VL - 539

SP - 194

EP - 204

JO - Materials Science & Engineering A

JF - Materials Science & Engineering A

SN - 0921-5093

ER -