Evaluation of mechanical properties and defects detection by radiography for high strength al MMCs prepared by stir-casting method

Composites are a mixture of two or more distinct components. The properties of the composite have to be different from those of the individual components that make up the composite. In the industrial age of today, non-destructive evaluation of materials, components, and assemblies has become increasingly important, and plays a crucial role, be it in space, power, oil, automobile, or steel sector. As the consequences of component failure are more serious than ever, the integrity of component has to be evaluated and assessed at even, stage of its production. Presence of harmful defects, tensile residual stress, and unwanted microstructure affects the integrity of any component. Radiographic inspection is a very effective means of detecting such defects as cold shuts, internal shrinkage, porosity, core shifts and inclusion in castings. The composite is casted in block and the specimens prepared for tensile, hardness and NDT analysis. The machinability of the specimens are observed during machining process. The results obtained are discussed for aerospace applications.