Processing of Functionally Graded Aluminium Alloy and Composite Engineering Components by Centrifugal and Squeeze Casting Techniques

摘要

The advancement of technology in the field of aerospace, automotive, defence, electronics, biomedical and power engineering has led to the need of advanced materials with multifunctional behaviour and performance. To an extent these demands have been contented by the emerging new concept of Functionally Graded Materials (FGM). Various engineering components and structures with enhanced performance under extreme environments and service conditions of temperature, wear and corrosion had led to development of various new Functionally Graded Materials (FGMs). FGMs are one of recent innovative concepts in materials technology and are in their early stages of evolution and expected to have a strong impact on the design and development of new components and structures with better performance. The presence of gradual transitions in material composition in FGM can reduce or eliminate the deleterious stress concentrations and result in a wide gradation of physical and / or chemical properties within the material.