Analysis of Mechanical Behavior of Al6061 Composites Reinforced with Titanium Dioxide

Aluminum alloys are used low density good mechanical properties, better wear resistance as compared to predictable metals and their alloys. The industries are continuing in demand to develop light weight material, inexpensive and strong material which has led to the growth of aluminum alloy metal matrix composites. The aluminum based metal matrix composites have been moulded using TiO2 as reinforcement materials using the stir casting process. The hardness and tensile strength have been calculated addition to the TiO2 in Aluminium matrix improves the hardness of the material. The tensile strength and hardness increases above 4% of titanium oxide particles in the matrix.

Effectiveness assessment of pre-heating application at thermo-resistant alloy surfacing upon tool steel

There is considered a pre-heating effect upon the structure of wear-resistant alloys deposited upon 5HNM pressed tool steel by the method of an oscillating method. The results of investigations of transfer areas formed between deposited high-alloy metal and high-carbon steel are presented. The peculiarities in area structure formation of thermal effect under the impact of heating are defined.

Manufacture and characterization of aa6061 aluminum alloy metal matrix composites with ceramic particulate reinforcement

The work’s main objective was the manufacture of an AA6061 aluminum metal matrix composite reinforced with ceramics reinforcements of: aluminum oxide, silicon carbide, aluminum nitride and silicon nitride, through the powder metallurgy technique. The powders were subjected to high energy milling in a SPEX type vibrating mill. Thereafter, a cold uniaxial compactation was made and then the compacts were hot extruded. The powders were subjected to characterization using X-ray diffraction and laser diffraction granulometry. The extruded were characterized by scanning electron microscopy, energy dispersive spectroscopy and had their microhardness evaluated. The characteri-zation showed: the reinforcements’ addition in the matrix contributed to an acceleration of powders’ grinding; the reinforced samples had a higher microhardness than the unreinforced; it was observed that greater milling times and reinforcement’s addition increased the composites’ microhardness.