Duan, Zhi Chao and Langdon, Terence G. (2011) Effect of special ECAP die configuration on microhardness distribution in pure aluminium. Materials Science Forum, 667-669, 69-74. (doi:10.4028/www.scientific.net/MSF.667-669.69).
Abstract
Experiments were conducted to evaluate the feasibility of using a new ECAP die configuration in which there are arcs of curvature at the intersection of the two channels at both the outer and inner points. The experiments used a configuration in which the radii of curvature were identical at both the outer and inner points since calculations suggest this corresponds to an optimum configuration. High-purity aluminum was pressed using this special die and hardness measurements were taken on cross-sectional planes after pressing. The results show the new die configuration leads to less homogeneity than with conventional ECAP dies
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