AZ61/carbon nanotubes (CNTs) (0, 0.1, 0.5, and 1 wt.%) composites were successfully fabricated by using the stir-casting method. Hall–Petch relationship superposition of different strengthening mechanisms analyzed for aged as-cast AZ61/CNTs composites. Aged showed higher frictional stress (108.81 MPa) than that (31.56 Mpa) when grain size was fitted directly against experimentally measured yiel...

The practice of cardiology is increasingly constrained by guidelines, regulations, and legal considerations. Cardiologists, like any other group of doctors, have a primary duty of care to individual patients, but also have wider responsibilities to society in general, to their institution, and to their colleagues. In the UK these duties and responsibilities have been defined by the General Medi...

Very fine-grained Ni and Cu films were formed using pulsed laser deposition on fised silica substrates. The grain sizes in the films were characterized by electron microscopy, and the mechanical properties were determined by ultra-low load indentation, with iinite-element modeling used to separate the properties of the layers from those of the substrate. Some Ni films were also examined after a...

Deformation Behaviour of microcrystalline (mc) and nanocrystalline (nc) Mg-5%Al alloys produced by hot extrusion of ball-milled powders were investigated using instrumented indentation tests. The hardness values of the mc and nc metals exhibited indentation size effect (ISE), with nc alloys showing weaker ISE. The highly localized dislocation activities resulted in a small activation volume, he...

Abstract Multi-principal element alloys (MPEAs) are an emergent class of metallic materials that displays a huge range possible properties and applications. CrCoNi MPEAs attract great interest because they show good strength–ductility combinations, especially in Cr-rich non-equiatomic compositions. In this work, the Cr 40 Co 30 Ni MPEA was produced characterized at different annealing condition...