Effect of additional Zn on plasticity of large-scale Mg-based nanostructure-dendrite composites

Abstract

Large-scale Mg90Cu10 and Mg90Cu3Zn7 nanostructure-dendrite composites were successfully fabricated using a water-cooled squeeze casting. The Mg90Cu3Zn7 nanostructure-dendrite composite consisting of a mixture of hexagonal α-Mg and tetragonal MgCuZn phases has plasticity up to 8.4 % in excess of that of the Mg90Cu10 nanostructure-dendrite composite consisting of a mixture of hexagonal α-Mg and orthorhombic Mg2Cu phases. This implies that phase selection plays an important role in controlling the strength and plasticity of largescale Mg-based nanostructure-dendrite composites.

In situ fracture observation and fracture toughness analysis of squeeze cast AZ51–xSn magnesium alloys

“…Recently, many studies have been made to complement this shortcoming. For example, high-purity AZ91 alloys have been developed by minimizing Ni, Cr, and Fe contents which deteriorate the corrosion resistance [6], and high-temperature and corrosion properties have been improved by adding Mn, Zr, Ca, and rare earth metals [7][8][9][10][11][12][13]. In addition, the microstructural modification such as grain refinement and the expansion of solid solubility of alloying elements have been continuously conducted by applying rapid solidification processes [14][15][16][17].…”

Formation of bimodal eutectic structure in Ti63.5Fe30.5Sn6 and Mg72Cu5Zn23 alloys

“…lamellar spacing, in Fe- [14] and Ti-based [15] alloys comprising fully eutectic structure without toughening phase, i.e. micro-scale primary dendrites.…”