The Effect of Inner Corner Radius of ECAP Die on Strain Distribution and Damage Accumulation in Deformed Sample
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In the present research, the effect of inner corner radius of ECAP die on the material flow characteristic and the strain distribution inside sample were analyzed using 2D plain strain finite element simulation. Results showed that increase in inner corner radius results in the formation of smaller corner gap and narrow deformation zone. Consequently, the amount of plastic strain in regions at the bottom side of sample is increased. It is also concluded that the amount of damage factor in the upper regions of sample is higher than bottom regions and therefore cracks may initiate from these regions. In addition, the pressing force was raised by increasing inner corner radius.
KeywordsEqual channel angular pressing Inner corner radius Finite element simulation
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Conflict of interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
- 1.Yada H, Matsumura Y, and Nakajima K, United State Patent No. 4466842, August 21 (1984).Google Scholar