Towards magnesium alloys for high-volume automotive applications

Deformation behavior of Mg–Zn–Y alloys reinforced by icosahedral quasicrystalline particles

Design of magnesium alloys with controllable degradation for biomedical implants: From bulk to surface.

http://english.imr.cas.cn/research/researchprogress/201412/W020141209386112215608.pdf

Enhanced mechanical properties of Mg–Al–Zn cast alloy via friction stir processing

Effect of rare earth element Ce and La on corrosion behavior of AM60 magnesium alloy

AZ91–xRE and Mg–6Al–xRE magnesium alloys were studied, where x is 0, 1, 2 and 3% (in weight percent, wt.%), respectively. Influence of rear earths (RE) on the microstructure was investigated. Fine morphology could be achieved by high cooling rate. By casting fluidity spiral specimens, fluidities of the alloys were achieved. The hardness and microhardness of the alloys was tested. RE improved fluidity and hardness. By casting specimens in permanent mold, tensile properties of the alloys with different RE additions at ambient and elevated temperatures were studied. RE had little effect on ambient temperature tensile strength of AZ91 alloy but greatly improved that of Mg–6Al alloy and high temperature tensile properties of both alloys. The fracture behavior of the alloys, which was changed by RE and high temperature, was examined by scanning electron microscopy (SEM) and optical microscopy. Fracture of the alloys is predominantly brittle cleavage or/and quasi-cleavage failure.

Effects of rare earths on the microstructure, properties and fracture behavior of Mg–Al alloys

Fracture behavior of AZ91 magnesium alloy

Excellent ignition proof performance was obtained during the melting of Mg–9Al–0.5Zn–0.3Be alloy directly in the atmosphere. XRD and AES analysis indicated that the oxide film on the surface of the molten Mg–9Al–0.5Zn–0.3Be alloy exhibited a duplex structure, which was in agreement with the result of thermodynamic analysis. The outer layer of the oxide film mainly consists of MgO, which grows according to the parabolic law. The inner layer is a mixture of MgO and BeO, and its growth follows a linear law approximately. This inner layer acts as a barrier to reduce the outward diffusion of Mg2+, which leads to the excellent ignition proof performance. An oxide model was established to describe the oxidation procedure on the surface of the molten Mg–9Al–0.5Zn–0.3Be alloy.

Yizhen Lu

Papers

Effects of rare earths on the microstructure, properties and fracture behavior of Mg–Al alloys

Fracture behavior of AZ91 magnesium alloy

Behavior of surface oxidation on molten Mg–9Al–0.5Zn–0.3Be alloy

Study on ignition proof magnesium alloy with beryllium and rare earth additions

Evaluation of the effect of vacuum on mold filling in the magnesium EPC process