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Title of the course

MM 301?:? Phase Transformations??

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Credit structure

L????????? T????????? P????????? C

3 ? ? ? ? ? 1????????? 0 ? ? ? ? ? 8

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Pre-requisite, if any

None

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Course content

Basics of Phase diagrams: Gibbs free energy – composition diagrams, Gibbs-Thompson effect, introduction to ternary phase diagrams. Diffusion: steady vs non-steady states, driving force and mechanisms, Fick’s first and second laws. Interstitial and substitutional diffusion, high diffusivity paths. Interfaces: solid-vapour, grain and phase boundaries, ledge growth, glissile interface, rate controlling step. Nucleation, growth, Johnson-Mehl-Avrami analysis, age hardening, coarsening. Recovery, recrystallization and grain growth. Order-disorder, spinodal, cellular eutectoid and massive transformations. Martensite (phenomenological theory), Bainite, acicular ferrite.

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Texts/References

D.A. Porter and K.E. Easterling, Phase Transformations in Metals and Alloys, 2^nd Ed., Chapman and Hall, London, 1992.

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A.K. Jena and M.C. Chaturvedi, Phase Transformations in Materials, Prentice Hall:Englewood Cliffs, 1992.

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H.K.D.H. Bhadeshia and R. Honeycombe, Steels: Microstructure and Properties, 3^rd Ed., Elsevier/ Butterworth-Heinemann, Oxford, 2006.

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Instructor(s) name

Prof. N.Prabhu

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