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Continuous Cooling Transformation (CCT) Diagrams

Continuous Cooling Transformation (CCT) DiagramsR. MannaAssistant ProfessorCentre of Advanced StudyDepartment of Metallurgical EngineeringInstitute of Technology, Banaras Hindu UniversityVaranasi-221 005, Steel-TRAERF Faculty Fellowship Visiting ScholarDepartment of Materials Science and MetallurgyUniversity of Cambridge, Pembroke Street, Cambridge, CB2 Cooling Transformation (CCT) diagramThere are two types of CCT diagramsI) Plot of (for each type of Transformation ) Transformation start, specific fraction of Transformation and Transformation finish temperature against Transformation time on each Cooling curveII) Plot of (for each type of Transformation ) Transformation start, specific fraction of Transformation and Transformation finish temperature against Cooling rate or bar diameter for each type of Cooling medium2 Definition.

transformation temperature and time are also determined for specific amount of transformation. These are located on cooling curves plotted in a temperature versus time diagram. The locus of transformation start, finish or specific percentage of transformation ... of eutectoid steel t’ ...

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