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Dr P Chen

In this course we will consider how materials can be processed to create components with relatively complex geometries. We shall build upon the understanding of solidification gained during Part IB and extend it by considering the factors that affect that development of the dendritic microstructures typically observed. We will also consider the defects that can exist in a casting, understanding how they form and what mitigating steps can be taken. The course will then move on to look at deformation processing and consider the basis behind it.  An introduction to the most common processing operations will be provided, including details of their mechanics, how they deform the workpiece and the influence of variables such a temperature and strain rate.

This lecture course will cover:

  • Solidification theory - thermodynamic aspects, the role of solute atoms, growth velocities and the development of dendrites
  • Casting control - heat flow and interfacial heat transfer, solidification in the mushy zone and defect formation
  • Deformation processing - describing plastic behaviour, the influence of temperature and strain rate
  • Bulk deformation processes - the mechanics of forging, extrusion, rolling and drawing, potential sources of defects.