Product yield of ECAE processed material
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abstract
The growing study of ECAE has produced ever-increasing work on microstructural changes imparted to processed material. Little work, however, has been devoted to examining the resulting fully worked material volume in a given billet. In this paper, various processing schedules (routes) are studied, and the shape and volume of the fully worked region reported. Each route is examined through at least eight passes, with billet aspect ratios ranging from 3:1 to 20:1. Volumes were calculated using Maple math software and solid model techniques to verify the findings. This research will aid technology transfer to industry, since the useful volume fraction of fully processed material will influence production efficiency. In addition the final geometric shapes can influence the practicality of trimming operations, further reducing the amount of useful material produced. The results are both interesting and surprising; route B for instance, is found to be far more productive than route A.
