In this study, we present the results of electron-beam welding joints with 304-L stainless steel and copper. The influence beam’s power on structures mechanical properties welded was studied; experiments were realized at a beam deflection 0.3 mm to Cu plate powers 2400, 3000, 3600 W. phase compositions obtained studied by using X-ray diffraction (XRD); microstructure chemical composition invest...

One of the most important issues in materials science is to overcome strength–ductility trade-off engineering alloys. The formation heterogeneous and complex microstructures a useful approach achieving this purpose. In investigation, CoCrFeNiMn high-entropy alloy was processed via cold rolling followed by post-deformation annealing over temperature range 650–750 °C, which led wide grain sizes. ...

This work investigated the influence of reduced graphene oxide (rGO) modified with silver (Ag) and cerium (Ce) on mechanical electrical properties copper matrix composites. Powders Ce doped rGO Ag were synthesized using a hydrothermal reduction an electroless plating (glucose chemical reduction) method, respectively. Then, composites content 0.25 wt% ball milling spark plasma sintering (SPS). T...

This study investigated the impact of electromagnetic stirring (EMS) on nickel-base alloy welds prepared with gas tungsten arc welding process. Alloy 52 and its variants, 52M 52MSS, were carefully evaluated their weld microstructure mechanical properties. The results showed that exhibited a typical dendrites, dendrites could be refined by stirring. Meanwhile, an application EMS, precipitates be...

Linear low-density polyethylene (LLDPE) crosslinks under irradiation in the range of up to 250 kGy. Crosslinking leads better chemical and thermal resistance but causes reduction mechanical performance. To counter this reduction, compounds LLDPE with thermoplastic elastomers (TPV) were made. Specimens irradiated doses reaching from 99 231 Gel content shows a decrease around 12% for 20 wt% TPV c...

Near-Earth asteroids (NEAs) are organized into five main classes: Amor, Apollo, Aten, Atira and 'Ayló'chaxnim. Asteroids belonging to the 'Ayló'chaxnim class located entirely within orbit of Venus making them difficult detect by ground-based observatories. The first-known asteroid this class, (594913) 'Ayló'chaxnim, was discovered Zwicky Transient Facility (ZTF) in 2020 January during a twiligh...

background: in this experimental study, the radiographic and biomechanical characteristics of osteoperforated rabbit tibia during bone repair period were investigated. materials and methods: using dental drills, 2 mm holes were drilled at the mid-shaft of right tibia in 12 new zealand white rabbits. the left tibia was intact and selected as the control. x-rays of the left and right tibias were ...

Superplasticity refers to the ability of some materials pull out tensile elongations 400% or more when strain rate sensitivity is ~0.5. The first report true superplastic flow was published in 1934 experiments conducted England. However, this remarkable result attracted little interest among western scientific researchers and remained a laboratory curiosity for many years. Later, following exte...

Shape memory alloys are functional materials characterized by the effect of shape and superelasticity. Due to these properties, they widely used, particularly, in bioengineering, aeronautics, robotics civil engineering. The temperatures phase transformations influence external temperature strain rate on mechanical characteristics Ni55.75Ti44.15 alloy investigated this paper. is obtained differe...