TY  - JOUR
T1  - Effect of Equal Channel Angular Pressing on Yield Stress and
Fatigue Properties of Al 6063 Alloy
AU - Mohammed Razzaq, Alaa AU - Laila Majid, Dayang AU - Uday, M.B. AU - Ishak, M.R. AU - Hashim, Nurain 
JO  - Journal of Engineering and Applied Sciences
VL  - 12
IS  - 8
SP  - 2143
EP  - 2147
PY  - 2017
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2017.2143.2147
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2017.2143.2147
KW  - Al 6063 alloy
KW  -ECAP
KW  -mechanical properties
KW  -tensile test
KW  -fatigue
AB  - The present research investigates the effect of Severe Plastic Deformation (SPD) on the mechanical
properties (yield and tensile strength) of Al 6063 alloy along with its fatigue behavior. The severe plastic
deformation was carried out by using Equal Channel Angular Pressing (ECAP) technique. This technique was
used to refine grains into ultrafine grain size of the metal alloy without changing the cross-sectional dimensions
of the work piece. Prior to the ECAP deformation process the material was annealed for 2 h at 415°C. The Al 6063
alloy specimens with 12×12 mm cross section and 100 mm length were machined from these annealed bars. They
were pressed at room temperature with a speed rate of 10 mm/min through 120° die channel angle using
a 100 KN hydraulic press machine. Molybdenum disulfide was used as lubricant for reducing friction between
the work piece and ECAP die. The tensile tests were conducted before and after ECAP at room temperature with
a fixed cross head displacement rate 1 mm/min using a hydraulic machine. The Fatigue life was tested under axial
loading tension-compression with stress ratio R = -1. The results showed a significant improvement in
mechanical properties of Al 6063 alloy after ECAP technique. Furthermore, the improvement of the fatigue life
in the high-cycle fatigue region was substantial compared with low-cycle fatigue region.
ER  -