Previous studies have yet to show a consistent effect of severe plastic deformation (SPD) processing on the wear behavior different metals and alloys. To fill this scientific gap, study investigated cyclic extrusion compression (CEC) process, as one prominent SPD techniques, AA5052. In addition, microstructure evolution mechanical properties sample before after process were experimentally exami...

The aim of this study is to investigate the capability of the image source method (ISM) for predicting medium and high frequency flexural vibrations of damped convex polygonal thin plates including various boundary conditions. Besides its classical use in room acoustics, ISM has already been applied to polygonal plates comprising simply supported and roller supported edges. Such boundaries incl...

The factors that govern cleavage cracking across high-angle grain boundaries are investigated theoretically. According to previous experimental observations, a cleavage front overcomes the resistance of a high-angle grain boundary by first penetrating across it at a number of break-through points (BTP) and then separating apart persistent grain-boundary islands (PGBI). In the current study, thi...

Ultra-fine grained (UFG) structure (~0.6 µm) was produced in the stir zone (SZ) of 6061-T6 aluminum alloy joints using friction stir processing (FSP) cooled by liquid nitrogen (N2). A new experimental set-up was used to simultaneously quench the lower and upper surfaces of the samples during the processing. In addition, FSPed joints, using a steel backing plate, were produced at room temperatur...

A new small-angle scattering instrument SANS-1 will be installed on beamline NL 4a at the Heinz Maier-Leibnitz Forschungsneutronenquelle (FRM II). It is a joint venture between the Technische Universität München and the Geesthacht Neutron Facility (GENF). SANS-1 has been optimized to be one of the most intense and versatile small-angle scattering instruments within the boundaries of available s...

Stabilities of the symmetrical <110>and -tilt and -twist boundaries of an a Cu-AI alloy against both dissolution and Stress-Corrosion-Cracking (SCC) are discussed. The susceptibilities of the boundaries to SCC are strong1 y dependent upon the misorientation. Cusps exist at some angles which are corresponding to relatively small C-values. These boundaries indicating great resistances t...

An experimental study was performed to investigate the effects of the body angle of attack on the tail surface pressure distribution for a half body-tail combination in subsonic flow. The results show, in small deflection angle regions, that the tail deflection has the same effect on the surface pressure as the body angle of attack. However at moderate to high deflections, the flowfiled caused ...

Abstract In order to obtain a high-strength Al-Mg-Si aluminum alloy with tensile strength of more than 400MPa, trace amount Zr is added the 6082 an Al-1.0Mg-1.05Si-0.55Mn-0.15Cr-0.045Zr alloy. The mechanical properties and microstructure extruded were studied by performance test, metallography, scanning electron microscope (SEM), transmission (TEM), backscatter diffraction (EBSD) observation en...