Mechanical spectroscopy has been used for studying the relaxation of the mechanical and thermal stresses, which are built at the fibre-matrix interfaces in AICu-A1203 Metal Matrix Composites (MMCs). The interface strength has been evaluated by the stress dependent damping which exhibits a peak of solid friction. This peak is interpreted as due to interface microcracking. Relaxation of thermal s...

The present work explores the processability of an advanced aluminum alloy, namely AlCu-TiB2, by selective laser melting (SLM), and correlation between microstructure mechanical properties as built specimens. principal process parameters emission in pulsed wave (PW) mode, power exposure time, were varied to achieve full density parts starting from prealloyed powders. Detailed analysis defects h...

Abstract The scanning vibrating electrode technique was employed to monitor the in situ localised electrochemical activity on aluminium alloy 2024-T3 at free corrosion potential aggressive NaCl solutions with and without inhibitors 2-mercaptobenzimidazole (MBI) octylphosphonic acid (OPA). MBI is a very effective inhibitor against pitting corrosion, even chloride environment reservoir of MBI. In...

Abstract This paper presents research into the creation of refill friction stir spot welding (RFSSW) single-lap joints 6082-T6 aluminum alloy and roll-bonded AlCu bimetallic sheet. The latter sheet comprises EN AW-1050A electrolytic copper M1E in Z6 temper condition (after rolling) with a 1:1 ratio Cu:Al layers. parameters involved variable plunge depth time. mechanical properties were determin...

Abstract Non-destructive 3D characterization of grain orientations, shapes and sizes, i.e. mapping, offers immense opportunities for studying microstructural evolution in polycrystalline materials. In addition to a number well-established mapping techniques available at synchrotron facilities, polychromatic variant - laboratory diffraction contrast tomography (LabDCT) using lab-based x-rays, ha...

In the present work, in-situ metal matrix composites were fabricated through squeeze casting. The copper particles were dispersed with different weight percentages (3%, 6%, 10%, and 15%) into Al-12% Si piston alloy. Also, heat treatments were performed at 380 °C and 450 °C for holding times of 6 and 18 h. The microstructures, X-ray diffractometer (XRD) pattern, hardness, and wear characteristic...

The title compound, [AlCu(3)W(12)O(40)(C(2)H(8)N(2))(6)(H(2)O)(3)], was prepared under hydro-thermal conditions. The Cu(2+) ion displays an elongated octa-hedral geometry defined by one bridging O atom from the polyoxidoanion and a coordinated water mol-ecule in axial positions and four N atoms of the two chelating ethyl-enediamine (en) ligands in equatorial positions. The one-electron reduced ...

In-situ alloying is a facile method for exploring high-performance metallic materials additive manufacturing. However, composition inhomogeneity inevitable, and it double-edged sword the properties of in-situ alloyed parts. Appropriately controlling benefits applications in specific microstructural design. In this work, Al20Cu alloy was selected as benchmark to investigate tailoring inhomogenei...