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Date of Publication:2008-01-01

Journal:机械工程材料

Volume:32

Issue:12

Page Number:8-11

ISSN No.:1000-3738

Abstract:The action mechanism of electric field on pure aluminium deformed at 480
   ℃ was studied mainly in term of dislocation structure.The microstructure
   and fracture was analyzed by optical microscopy and SEM.The results show
   that the application of electric field resulted in the decrease of flow
   stress,yield strength and dislocation density during the high temperatre
   deformation process of pure aluminium.The electric field also suppressed
   the nucleation and growth of internal cavities in the tension
   deformation process,and increased the tensile elongation.The intensity
   and polarity of applied electric field affected the dislocation movement
   in elevated temperature tension deformation process of pure Al.

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