High specific strength and superior corrosion resistance are two key characteristics of the aerospace grade AA7075-T6 alloy. However, surface behavior is found to be deprived, because its being prone fretting fatigue adhesive wear under dry sliding conditions. Thus, improvement with retention microhardness alloy required for increasing wider application. For this, isomorphous precipitates soft ...

Low density of magnesium-based alloy is one potential as the lightest structural material for light weight-high strength applications automotive and aerospace. Severe plastic deformation (SPD) together with thermomechanical processing are proved to be a successful method attaining desired microstructural modifications through achieving fine highly misoriented microstructures creating various st...

Friction stir welding is a solid state joining process. High strength aluminum alloys are widely used in aircraft and marine industries. Generally, the mechanical properties of fusion welded aluminum joints are poor. As friction stir welding occurs in solid state, no solidification structures are created thereby eliminating the brittle and eutectic phases common in fusion welding of high streng...

Friction stir welding and tungsten inert gas welding techniques were employed to weld armor grade aluminum alloy to investigate the effect of welding processes on tensile behavior of weld joints. Tensile tests, Vicker microhardness tests and optical microscopy were performed on developed weld joints and base metal. Welding process influenced tensile behavior and microstructure of weld joints. F...

In this article, a boron carbide particle (B4C) reinforced AA2014 surface composite was first fabricated by friction-stir processing (FSP) to investigate the impact of volume percentage B4C, tool rotational speed and table on tensile strength (TS) wear rate (WR). The is one important candidates for making defense aerospace components due its high minimum weight. Taguchi orthogonal array employe...

The microstructure and residual stresses of an AA6040 Al to AZ31B Mg friction stir weld are studied using scanning electron microscopy and X-ray diffraction. The complex material flow promoted by the friction stir welding process results in a fine grained structure in the stir zone of both materials due to dynamic/recovery recrystallization. The interface between the materials is characterized ...