An alloy for musical instruments should have high enough strength, hardness, specific elastic properties and low damping capacity. The high tin bronze alloys with composition 20-22 wt.% Sn has good acoustical properties, which is capable of producing long-lasting slowly damping vibrations but there is brittle materials. Cracks and fracture may appear on these materials. The study on mechanical ...

This study aims at assessing the effect of solution heat treatment (at a temperature just below eutectic temperature) followed by various cooling rates on microstructure and mechanical properties additively manufactured AlSi10Mg cast counterpart. The were evaluated using depth-sensing nanoindentation platform. parts solutionized 540 ​°C for 2 ​h water quenching, air cooling, furnace cooling. Re...

Sputtered reactive multilayers applied as a heat source in electronic joining processes are an emerging technology. Their use promises low-stress assembly of components while improving thermal contact and reducing thermal resistance. Nanostructured surface modifications can significantly enhance adhesion and reliability of joints between different materials. This work examines reactive multilay...

Introduction: Metal segregation und subsequent formation of an FeNi core is the major differentiation process in large planets such as the earth, but metal separation and aggregation will also occur in smaller planetsimals such as asteroids. Core formation implies partial or full equilibration of core forming FeNi with liquid silicates, implying partial or complete redistribution of siderophile...

BACKGROUND Sandblasting particles which remain on the surfaces of dental restorations are removed prior to cementation. It is probable that adhesive strength between luting material and sandblasting particle remnants might exceed that with restorative material. If that being the case, blasting particles adhere to sandblasted material surface could be instrumental to increasing adhesive strength...

A fracture analysis of highly loaded particulate reinforced composites was performed using laser moire interferometry to measure the displacements within the plastic zone at the tip of an advancing crack. Ten castings were made of five different particulate reinforcement-aluminum alloy combinations. Each casting included net-shape specimens which were used for the evaluation of fracture toughne...

The cluster expansion enables fast alloy property computations especially useful for predicting alloy thermodynamics. It expands configurational alloy properties in basis functions called clusters with associated expansion coefficients called effective cluster interactions (ECI). The number of ECI depends on the symmetries of the system. Therefore, when applied to non-bulk low-symmetry systems,...

Although several types of locomotive microrobots have been developed, most of them have difficulty locomoting on uneven surfaces. Thus, we have been focused on microrobots that can locomote using step patterns. We are studying insect-type microrobot systems. The locomotion of the microrobot is generated by rotational movements of the shape memory alloy-type rotary actuator. In addition, we have...