Relationship between mechanical properties, microstructure and texture evaluations during hot deformation of AZ63 magnesium alloy. (13th March 2019)

• Record Type: Journal Article
• Authors: Kaviani, M; Ebrahimi, G R; Ezatpour, H R; Ahmadnia, M
• Is Part Of: Materials research express. Volume 6:Number 6(2019)
• Publication Date: 2019-03-13
• Subjects: AZ63 magnesium alloy -- twinning -- recrystallization -- texture; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/ab0a4f
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: Magnesium alloys have been broadly used in the applications of transport and aerospace industries due to their low density and high specific strength while their workability is limited by the structural properties. In the present study, microstructure and texture evolution of AZ63 magnesium alloy are investigated at temperature range of 250 °C–350 °C, strain rates of 0.01 and 0.1 s −1 and various strains of 0.1 to 0.4, using hot compression tests. Microstructural investigation reveals that the emergence of twinning is dominant deformation mechanism at lower temperature (250 °C) whereas discontinuous recrystallization (DDRX) occurs at 300 °C and 350 °C as a result of work softening at low strains. In addition, texture analysis at various temperatures indicates twinning formation at 250 °C and initial strains. However, dynamic recrystallization (DRX) at 300 °C and 350 °C decreases the basal texture intensity.