Enhanced strength and ductility of metal composites with intragranularly dispersed reinforcements by additive manufacturing

Metal Additive Manufacturing: A Review

This paper reviews the state-of-the-art of an important, rapidly emerging, manufacturing technology that is alternatively called additive manufacturing (AM), direct digital manufacturing, free form fabrication, or 3D printing, etc. A broad contextual overview of metallic AM is provided. AM has the potential to revolutionize the global parts manufacturing and logistics landscape. It enables dist...

Variability of Poisson’s Ratio and Enhanced Ductility in Amorphous Metal**

Ductile bulk metallic glass of composition 53.0Zr–18.7Cu–12.0Ni–16.3Al (at%) is plastically deformed under uniaxial compression and observed in situ by synchrotron high-energy X-ray diffraction. The diffraction patterns reveal the induced atomic strain is orientation dependent. At the onset of plastic deformation, the atomic strain in the compression direction saturates to a close-nearest-neigh...

Additive Manufacturing of Al Alloys and Aluminium Matrix Composites (AMCs)

Experimental Investigation into Micro Machinability of Mg based Metal Matrix Composites with nano-sized reinforcements

Magnesium based metal matrix composite (Mg/MMC) has been widely used in various area such as aerospace and automobile due to its light weight and better mechanical properties. However the heterogeneous structure and high abrasiveness particles make it to become a difficult-to-cut material especially in micro scale machining, several critical issues in machining process become prominent with the...

High Strength Metal-Carbon Nanotube Composites

Uniform dispersion of pre-synthesized nanotubes in metal matrices is difficult to achieve, and there is substantial damage to the nanotubes during subsequent composite fabrication. The demonstration of an in-situ process involving chemical vapor deposition of single-wall and multi-wall carbon nanotubes into iron matrices without the concomitant formation of iron carbides is reported here. It wa...