Abstract:This work studied the effect of extrusion and alloying with 4 wt.% of Zn and 0.4 wt.% of Ca on the structure and mechanical properties of magnesium. Light, scanning electron microscopy, X-ray diffraction, hardness, compressive and tensile tests were used for this purpose. The addition of zinc led to the formation of MgZn and further alloying with calcium changed the nature of the secondary phase to Ca2Mg6Zn3. The process of extrusion resulted in significant structural refinement, which was the most pronounced … Show more
“…Hradilova and Vojtech *Corresponding author: tel. : +91 9471192246; fax: +92 326 229 6563; e-mail address: mal123 us@yahoo.com [7] have demonstrated that the extrusion process and the addition of small wt.% of Zn and Ca in Mg make significant structural refinement leading to substantial improvement in tensile strength. Further, Li et al [8] have exposed that continuous variable cross-section direct extrusion (CVCDE) process gives more grain refinement over the conventional extrusion process, and correspondingly the tensile strength can be enhanced more as compared to the ordinary extrusion process.…”
In this study, Mg-6Al/Al2O3 nanocomposites were synthesized using disintegrated melt deposition technique followed by hot extrusion. Two different amounts of alumina nanoparticles (0.66 and 1.11 wt.%) were added into Mg-6Al matrix. Microstructure and mechanical properties were investigated. Results of XRD analysis revealed that the presence of alumina nanoparticles assisted in randomization of texture (basal to prismatic). The compressive response regarding hardness and compressive strength was assessed using nanoindentation and compressive tests. The results of hardness, modulus of elasticity, compressive strength and the deformation behavior of the composites were compared with pure Mg and Mg-6Al alloy. In all the cases, the composites exhibit better mechanical properties.K e y w o r d s : Mg-6Al alloy, Al2O3 nanoparticles, microstructure, compression, nanoindentation
“…Hradilova and Vojtech *Corresponding author: tel. : +91 9471192246; fax: +92 326 229 6563; e-mail address: mal123 us@yahoo.com [7] have demonstrated that the extrusion process and the addition of small wt.% of Zn and Ca in Mg make significant structural refinement leading to substantial improvement in tensile strength. Further, Li et al [8] have exposed that continuous variable cross-section direct extrusion (CVCDE) process gives more grain refinement over the conventional extrusion process, and correspondingly the tensile strength can be enhanced more as compared to the ordinary extrusion process.…”
In this study, Mg-6Al/Al2O3 nanocomposites were synthesized using disintegrated melt deposition technique followed by hot extrusion. Two different amounts of alumina nanoparticles (0.66 and 1.11 wt.%) were added into Mg-6Al matrix. Microstructure and mechanical properties were investigated. Results of XRD analysis revealed that the presence of alumina nanoparticles assisted in randomization of texture (basal to prismatic). The compressive response regarding hardness and compressive strength was assessed using nanoindentation and compressive tests. The results of hardness, modulus of elasticity, compressive strength and the deformation behavior of the composites were compared with pure Mg and Mg-6Al alloy. In all the cases, the composites exhibit better mechanical properties.K e y w o r d s : Mg-6Al alloy, Al2O3 nanoparticles, microstructure, compression, nanoindentation
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.