Syllabus
Introduction and advances in metal casting processes; Thermodynamics and stability of phases, Classification of phase transformations, Order of transformation, Gibbs rule and application, Phase diagrams construction and interpretation. Liquid-solid transformation: homogeneous and heterogeneous nucleation, Growth aspects- plane front, cellular, columnar, dendritic and equiaxed. Growth of single crystals, Czochralski growth, Macro and micro segregation; Composition control; Constitutional supercooling; Solidification of pure materials, eutectic solidification, Fluid dynamics during mould filling and solidification, Interfaces, Rheocasting, thixocasting, electroslag casting, casting of composites. Rapid solidification. Design of various systems in casting processes. Solidification under microgravity conditions. Solidification in welding processes, solidification in Additive manufacturing processes.
Investment casting, die casting processes, continuous casting, centrifugal casting processes. Casting of aerospace materials – Aluminium alloys, Magnesium alloys, Titanium alloys. Defects in casting processes
Text Books
- Doru Michael Stefanescu, Science and Engineering of Casting Solidification, Kluwer Academic/ Plenum publishers (2016).
References
1. M. C. Flemings, Solidification process–, McGraw-Hill (1974).
2. W. G. Winegard, An Introduction to the Solidification of Metals CRC press (1964).
3. G.J Davies, Solidification and casting, Elsevier (1973).
4. Hasse Fredriksson, Ulla Akerlind Solidification and Crystallization Processing in Metals and Alloys, Wiley (2012).
Course Outcomes (COs):
CO1: To understand the principles of phase change during liquid to solid transformations
CO2: To troubleshoot the casting process for defect free components.
CO3: To design the gating systems of a casting process for a healthy product
CO4: To appreciate various advanced casting processes for various metals