Effect of extrusion temperature on mechanical properties of as-extruded Zn–22Al alloys

Abstract

The effect of extrusion temperature on the microstructures and mechanical properties of as-extruded Zn–22Al alloys was investigated in this study. With decrease of extrusion temperature from 350 to 200°C, the elongation of as-extruded Zn–22Al alloys increases remarkably at low strain rate and has no change at high strain rate, which implies that the Zn–22Al alloys extruded at lower temperature exhibit high-ductility behaviour. X-ray diffraction and electron back-scattered diffraction analysis demonstrated that the maximum elongation of Zn–22Al alloys extruded at the extrusion temperature of 200°C can be attributed to the elimination of the lamellar structure and the refinement in grain size of the Zn-rich phase.

Microstructure evolution of as-extruded Zn–0.62Mn alloys during room temperature compression

“…The common alloying elements are Mg, Cu, Fe, Ca, Fe, Sr, Sn, Bi, Mn, Ag, Al, Ge, Li, Ti and Zr. The second phase has a great affection on the microstructure and mechanical properties of Zn alloys [7][8][9][10][11][12][13][14][15][16][17][18][19]. Among the above elements, Mn has attracted much attention because it is easy to improve the elongation of Zn alloys [20].…”