Fe–30Mn–10.5Al–1.1C alloys with different Mo and Ni contents are prepared to investigate the phase transformation behavior mechanical properties of austenitic lightweight steels. Solution-treated samples have microstructures consisting an austenite matrix ordered κ-carbides, size κ-carbides decreases addition or Ni. In addition, body-centered cubic (BCC) phases B2 DO3 also form when 3wt%Mo 3wt%...

The influence of aluminium on the microstructure of austempered ductile cast iron (ADI) has been studied. The presence of well distributed graphite in the matrix, and a relatively high volume fraction of retained austenite are responsible for the good mechanical properties of the Aluminium alloyed austempered ductile irons including excellent wear resistance, higher resistance to thermal shock,...

Atom probe tomography has characterised the microstructural changes in T91 steel after BOR60 reactor irradiation at five temperatures between 376 °C and 524 to doses 14.6 dpa 35.1 dpa. Irradiation-induced precipitation segregation carbide/matrix interface induced by neutron been characterised. characterisation shows that Mn, Ni, Si -rich (MNS-rich) clusters form irradiated 415 °C, which is not ...

Hypereutectic High Chromium Cast Iron (HHCCI) is a new type of corrosion-wear-resistant material developed from ordinary high chromium cast iron by increasing the and carbon content often used in abrasive environments where wear corrosion interact. The resistance HHCCI related to number, size, shape distribution carbides microstructure matrix. This paper reviews research progress improving vari...

A simple passive haemmagglutination assay (PHA) was developed to detect Vi antibodies, to improve the diagnosis of typhoid fever by small laboratories. The Vi capsular antigen of Salmonella typhi was extracted by alternate alcohol and acetone precipitation. Formalin fixed, sheep red blood cells treated with chromium chloride were sensitised with this Vi antigen and antibodies detected and measu...

Toxic heavy metal contamination of industrial wastewater is an important environmental problem. Many industries such as electroplating, pigments, metallurgical processes, and mining and leather industries release various concentrations of heavy metals like chromium. Chromium generally exists in different forms, mostly as trivalent and hexavalent forms. Trivalent chromium is nontoxic and relativ...

In this study, continuous drive friction welding process is selected for joint dissimilar high chromium white cast iron and mild carbon steeel. The microstructure, presence diffusion of elements, deformation in interface weld metal were analyzed by scanning electron microscopy (SEM), optical (OM), energy dispersive spectroscopy (EDS), elemental mapping X-Ray diffraction (XRD). Elemental analysi...

Heat-resisting alloys are designed to survive high-temperature oxidation by forming a slow-growing scale, usually Cr 2 O 3 , which acts as barrier between the metal and its environment. However, that succeed in this way when exposed hot oxygen or air fail do so CO gas. Instead, they exhibit rapid “breakaway” corrosion, developing oxides of alloy base iron and/or nickel. The growth these non-pro...

Erosive wear characteristics of (18 and 27) wt.% Cr based multicomponent (3 wt% V, Mo, W, Co) white cast iron have been systematically investigated with three conditions: as-cast (AC), as-quenched (Q), tempered (QT). The result shows that Q specimens has the better erosive resistance compared to AC due transforming austenite matrix be martensite precipitation secondary carbide. However, was sli...

We report chemical vapor deposition growth of SiGeC layers on ^100& Si substrates. At the growth temperature of 550 °C, the C concentration as high as 2% can be incorporated into SiGe ~Ge content ; 25%! to form single crystalline random alloys by using low flow of methylsilane ~0.25 sccm! as a C precursor added in a dichlorosilane and germane mixture. For intermediate methylsilane flow ~0.5 scc...