Article ID Journal Published Year Pages File Type
1624330 Journal of Alloys and Compounds 2008 7 Pages PDF
Abstract

The microstructure, texture and tensile properties of AZ91 magnesium alloy that was extruded at 300 and 360 °C with extrusion ratios of 5.5 and 22 are investigated. The occurrence of dynamic recrystallization, precipitation of second phase (Mg17Al12) particles and the formation of basal texture during extrusion are observed by electron back scattered diffraction patterns analyses. Along with the increase of either the extrusion temperature or extrusion ratio, the tensile strength decreases and the ductility increases. The precipitation of the second phase is beneficial to the grain refinement and in turn to the promotion of the tensile strength. The fracture analysis shows that the deformation twinning plays an important role in increasing the elongation.

Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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