NUMERICAL SIMULATION OF OUTER DIE ANGLE OF EQUAL CHANNEL ANGULAR EXTRUSION PROCESS
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IAEME Publications
Abstract
Description
The study of the simulation of effect of outer die angle in Equal Channel Angular
Extrusion (ECAE) process was investigated. The simulation was carried out on 6063
aluminium alloy with a view to achieve ultra-fine grain structures. ADINA user
interphase Version 8.6 (900 modes) was used for the simulation. The unextruded
parameters of the 6063 aluminium alloy were used as input codes and some basic
assumptions were made in designing the model on 2-Dimensional scale. The billet was
meshed by dividing the vertical and horizontal geometry into 30 and 4 elements
respectively. The die angle was varied from 0o
to 90o
and the simulation results were
displayed. The results showed that the force of 27.5X106 N, 27.5X106 N, 27.6X106 N
and 31.2 X106 N was required to deform when the outer die angle was 0o
, 22.5o
, 45o
and 90o
respectively. Also, the strains achieved were 0.61, 0.62, 0.66 and 0.69
respectively. Thus, highest force is required at 90o
and the strain achieved at 0o
is the
lowest. Based on the results, it was recommended that it is more economical to
extrude at an outer angle between 22.5o
and 45o
as a relatively higher effective strain
will be induced.
Keywords
Q Science (General), QE Geology, TC Hydraulic engineering. Ocean engineering