76 citations · 98 across the 8 of their papers we have counts for
6 papers · 1 filter
Revisiting Jackson-Hunt calculations: Unified theoretical analysis for generic multi-phase growth in a multi-component system
Arka Lahiri, Abhik Choudhury
A straight-forward extension of the Jackson-Hunt theory for directionally solidifying multi-phase growth where the number of components exceeds the number of solid phases becomes d…
Theoretical and numerical investigation of diffusive instabilities in multi-component alloys
Arka Lahiri, Abhik Choudhury
Mechanical properties of engineering alloys are strongly correlated to their microstructural length scale. Diffusive insta- bilities of the Mullins-Sekerka type is one of the princ…
Elastic stress effects on microstructural instabilities
M P Gururajan, Arka Lahiri
This review is on the phase field modelling studies in elastic stress effects on microstructural instabilities. We will focus primarily on four elastic stress driven instabilities:…
Eutectic colony formation in systems with interfacial energy anisotropy: A phase field study
Arka Lahiri, Chandrashekhar Tiwary, Kamanio Chattopadhyay +2
Instability of a binary eutectic solidification front to morphological perturbations due to rejection of a ternary impurity leads to the formation of eutectic colonies. Whereas, th…
Phase field modelling of interfacial anisotropy driven faceting of precipitates
Arijit Roy, E S Nani, Arka Lahiri +1
We use extended Cahn-Hilliard (ECH) equations to study faceted precipitate morphologies; specifically, we obtain four sided precipitates (in 2-D) and dodecahedron (in 3-D) in a sys…
Growth in multi-component alloys: Theoretical and numerical determination of phase concentrations
Arka Lahiri, T. A. Abinandanan, Abhik Choudhury +1
Understanding the role of solute diffusivities in equilibrium tie-line selection during growth of a second phase in ternary and higher multicomponent two phase alloys is an importa…