Microstructure and texture evolution of the cold-rolled AZ91 magnesium alloy strip under electropulsing treatment

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)4308-4313
Journal / PublicationJournal of Alloys and Compounds
Volume509
Issue number11
Publication statusPublished - 17 Mar 2011

Abstract

The effect of electropulsing treatment (EPT) on the microstructure and texture evolution of the cold-rolled AZ91 magnesium alloy strip was investigated using X-ray diffraction (XRD) and electron backscattered diffraction patterns (EBSD). The results indicated that EPT accelerated tremendously the recrystallization behaviour of the cold-rolled AZ91 magnesium alloy strip at a relatively low temperature within a short time of 7 s. It also suppressed precipitation of β-Mg17Al12 phase, compared with conventional heat treatment. The recrystallized grains favourably weakened the intensity of the basal texture. A mechanism for rapid recrystallization process during EPT was proposed based on the enhancement of nucleation rate and atomic diffusion resulting from the coupling of the themal and athermal effects. © 2011 Elsevier B.V.

Research Area(s)

  • AZ91 magnesium alloy, Electropulsing, Recrystallization, Texture