Grain shape and microstructural evolution during equal channel angular pressing
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The congruence between theoretical and experimental shape changes in flow plane microstructures after repetitive equal channel angular pressing (ECAP) by route A is demonstrated for initially spheroidal grains. The model has been extended to predict shape changes of initially ellipsoidal grains of various aspect ratios during repetitive ECAP by route A. The potential role of initial grain morphology on the grain refinement is suggested.
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