Stability of lamellar eutectics

A new theory for the growth of lamellar eutectics is presented. The present analysis is different from previous theories in that the growth problem is formulated in terms of an interface equation. This equation is analysed for steady state solutions and their stability against different perturbations.The main conclusion from this theoretical analysis is that lamellar eutectics should grow close to the minimum undercooling condition.The present investigation not only clarifies earlier discussions but is also puts forward a new approach to the complex problem of growth.