76 citations · 98 across the 8 of their papers we have counts for
8 papers
Understanding the mechanisms of electroplasticity from a crystal plasticity perspective
Arka Lahiri, Pratheek Shanthraj, Franz Roters
Electroplasticity is defined as the reduction in flow stress of a material undergoing deformation on passing an electrical pulse through it. The lowering of flow stress during elec…
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…
Effect of Epitaxial Strain on Phase Separation in Thin Films
Arka Lahiri, T. A. Abinandanan, M. P. Gururajan +1
We examine the role of an imposed epitaxial strain e in enhancing or depressing the spinodal instability of an alloy thin film. Since the alloy film starts with an imposed strain,…