Manfacture of Al-B4c Metal Matrix Composites Via Stir Casting Methode

Aluminum alloys are widely used in the aerospace and car industries due to their low density and suitable mechanical housing, excellent corrosion resistance and wear, and the low thermal coefficient of expansion compared to conventional metals and alloys. Exceptional mechanical residency of those alloys and the relatively low production value lead to a candidate that is very attractive for the diffusion of applications, from scientific and technical point of view. Manufacturing of aluminum alloy based totally casting composite with the aid of stir casting is one of the most within your budget techniques of processing MMC. The primary goal of this paper is to make aluminum metallic Matrix composite with different sythesis of fortification garbage of Boron Carbide Via utilizing mix throwing approach and Hardness of the Al-B4C MMCs measured via Vickers hardness method.

Incorporation of AWS 316L wire nanostructured with nickel-carbon nanotube by arc welding

Carbon nanotubes have certain properties, such as 150 GPa tensile strength, a 1000 GPa shear modulus, an electrical conductivity of 60 S/m, and a high thermal conductivity of 2500 W/mk, that make them an optimum metallic matrix composite reinforcement. Otherwise, arc welding is a common industrial process that joins almost all metals. However, there are hardly any studies involving the addition of carbon nanotubes in stainless steel so far. In this research, we show the incorporation of an AWS 316L nanostructured wire with nickel-carbon nanotubes in austenitic stainless steel via pulsed gas tungsten arc welding, which formed nanocomposites with 0.75 and 1.5 wt% carbon nanotube contents in the wire. The characterization was performed by scanning electronic microscope, Raman spectroscopy, and X-ray diffraction. The Vickers microhardness test was used to analyze the mechanical properties. The nanostructure composite had microstructure modification, and superficial microhardness improved in 35% for 0.75 wt% carbon nanotube.

Mechanical Characteristic of Flowing Solidification under the Extrusion for the Mixture of the Liquid Aluminum with Sillimanite Particles

: According to the theory of liquid metal forging and liquid metal extrusion, a new kind of fabricating method for particles reinforced metallic matrix composite was put forward by author. In this paper, the extrusion process to semisolid thick liquid after the mixture was studied by means of the theoretical analysis and experimental methods. Mechanical characteristics of solidification during flowing and plastic deformation during solidification of the composite were found. So the base was built up for selecting technology parameters and for building a stabile process