Vibration was adopted to enhance the interface bonding of Mg–Al bimetal prepared by lost foam compound casting (LFCC) technique. The bimetallic composed three layers: layer I (Al3Mg2 and Mg2Si phases), II (Al12Mg17 III + δ-Mg eutectic structure). With increase in vibration acceleration, cooling rate increased, resulting decrease reaction duration that generates intermetallic compounds (IMCs) (i...

In this work, ultrasonic vibration treatment (UVT) was introduced to improve the interfacial microstructure and bonding strength of A356/AZ91D bimetal processed via lost foam compound casting (LFCC). The mechanical properties Al/Mg LFCC with different UVT durations were investigated. Results revealed did not change composition phases at interface. bimetallic interface consisted an intermetallic...

In this study, the effect of temperature on the diffusion welding of AZ31 magnesium alloy and 7075 aluminum was discussed. Diffusion welding temperature was the most important parameter since all mechanisms are sensitive to temperature in Diffusion welding method. Intrusive contacts between the two alloys at temperatures of 430, and 440 °C 450 and took 60 min. In all tests constant pressure and...

Mechanically alloys in the Al–Mg binary system in the range of 5–50 at.% Mg were produced for prospective use as metallic additives for propellants and explosives. Structure and composition of the alloys were characterized by x-ray diffraction microscopy (XRD) and scanning electron microscopy. The mechanical alloys consisted of a supersaturated solid solution of Mg in the aluminum phase, phase ...

Abstract The thermally driven evolution of β-phase (Al3Mg2) and its impact on strength are explored for three different commercial producers aluminum alloy 5083-H131 used in armor applications. Specimens were exposed to 100 °C air periods up 30 days. Through a combination optical microscopy computational image analysis, the extent matrix β grain boundary microstructure was assessed. Quasi-stati...

Friction stir spot welding (FSSW) is a solid-state process, wherein the properties of weld joint are influenced by state friction and localised thermodynamic conditions at tool-workpiece interface. An issue well-known about FSSW joints their lack reliability since they abruptly delaminate weld-faying interface (WFI). This study explores origins delamination multiple lap welded aluminium alloy (...

The light-weight aluminium alloys play an important role in reducing emissions from the transport industry. However, to take full advantage of these, corrosion mechanisms that govern their failure need be properly understood. Hence, electrochemical response, especially after passive film breakdown, alloy AA5083 was analysed via potentiodynamic polarisation. By starting scans at relatively negat...