Deep Choudhuri, PhD
Assistant Professor
Materials and Metallurgical Engineering
- deep.choudhuri@nmt.edu
- 575 - 835 - 5465
- Speare 115
Research Areas
- Solid-state phase transformations in High Entropy or Complex Concentrated Alloys (HEAs / CCAs), Magnesium and Titanium alloys
- Dislocation plasticity and mechanics of multiphase materials
- Atomistic simulations guided microstructural modification
- First principles and Molecular Dynamics simulations
- Transmission Electron microscopy
- Integrated Computational Materials Science (ICME)
- Crystallography and chemical bonding
Education
PhD Materials Science and Engineering
Dissertation title: Influence of nanostructured chemicals on the microstructures and mechanical reliability of lead-free Tin-based solders
Michigan State University, East Lansing, MI
Graduation: August 2009
Bachelor’s in Technology (B Tech)
Metallurgical and Materials Engineering,
Indian Institute of Technology (IIT), Kharagpur
Graduation: June 2002
Plain Language Summaries of Recent Research
Physics-based framework for alloy transformations and microstructure development
Recently, we have found that the character of chemical bonds between solute atoms
(within a solid solution) biases an alloy to nucleate daughter phases with specific
kind of crystallography during the early stages of precipitation. For example, in
creep-resistant Mg-Nd-Zn pre-existing valence electron localization along the c-axis
of hcp-Mg facilitates the formation of precipitates, with hexagonal structure (space
group P -62m), on the basal (0002) habit planes (see adjoining Figure). Similar relationship
between anisotropic valence electron localization and microstructure was also noted
in Mg-Nd, Mg-Gd and bcc-Titanium alloys. Such empirical “bond-microstructure” relationship
guides our alloy design principles. Based on this notion, we are currently using density
functional theory (DFT)-based first principles computations to replace/reduce costly
rare-earth (RE) elements in creep-resistant Mg-RE variants, while retaining most (if
not all) of the “microstructural” advantages of Mg-RE.
Deformation mechanisms in multiphase microstructures via crystallographically informed
large-scale atomistic simulations
Courses Taught
Undergraduate
Graduate