Resumo

DUMITRU, Florina-Diana; ANDREEA-MONCEA, Mihaela  e  HIGUERA-COBOS, Oscar Fabián. Microstructural Characterization of a Magnesium Alloy Processed by Equal Channel Angular Pressing. Rev. Fac. ing. [online]. 2014, vol.23, n.37, pp.23-32. ISSN 0121-1129.

Samples of as-extruded ZK60 magnesium alloy were subjected to 6 passes of equal-channel angular pressing (ECAP) following route A. The processing temperature was decreased with the number of passes. The structural evolution of the deformed samples was analyzed using Electron Backscattered Diffraction (EBSD) and X-Ray Diffraction. The grain boundary misorientation distribution showed a reduction in the grain size accompanied by a large proportion of high angle grain boundaries and the presence of recrystallization processes. XRD results showed that with the increment of the applied strain the peaks presented a slight variation of the angles.

Palavras-chave : ECAP; Equal-channel angular pressing; ZK60 as-extruded magnesium alloy; EBSD; Electron BackScattered Diffraction; XRD; X-Ray Diffraction.

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