Abstract
This study examines the possibility of fabricating a complex, non-cylindrical, Pelton turbine bucket by centrifugal casting technique. Oil hardening non-shrinking die steel material was selected fo...
Highlights
Graded materials (FGMs) belong to the class of composite materials that have unique properties due to their gradual transition of the constituent materials
This study aims at casting an irregularly shaped component, a Pelton turbine bucket, by vertical centrifugal casting technique with A390 and A390-5%Mg as bucket materials
In the centrifugal casting alloy micrographs, a fibrous form of silicon is seen in the outer periphery (Figure 15(h)), followed by fine Si particles towards the inner surface
Summary
Graded materials (FGMs) belong to the class of composite materials that have unique properties due to their gradual transition of the constituent materials. This group of knowledge-based materials occurs in nature, such as bone and teeth.[1,2] The concept of FGM was modelled from nature in the quest of solving engineering problems.[3] Most metals in their natural form have little significance in engineering application as their properties sometimes conflict with what is required of them. A part may require hardness and ductility for proper functioning in a given working environment This kind of scenario has driven scientists and the engineers to develop various material fabrication processes. These processes are used to combine different elements or compounds in order to explore their comparative advantages
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