Amiya Mukherjee

Mukherjee's research focuses on processing, characterization, physical and mechanical and failure, as well as behavior, modeling and predictive capacity of materials.

Processing and properties of nanocrystalline ceramics

The focus of this research is to investigate the processing methods for oxide and non-oxide ceramics, which will produce nanocrystalline microstructures that can improve creep and toughness properties. Mukherjee emphasizes consolidation, microstructural evaluation and mechanical properties of the nanocrystalline state.

Characterization of nanocrystalline materials

The goal is to obtain fully dense, crack-free nanocrystalline materials. Once processing conditions are optimized, the materials will be characterized to determine whether their nanocrystalline microstructures are retained. Compression tests will be performed to determine the creep properties at elevated temperatures. The materials under investigation are alumina, tungsten-carbide-cobalt and nanocrystalline titanium aluminides.

Superplastic deformation in intermetallic alloys

Superplastic deformation of a gamma-TiAl and orthorhombic titanium aluminides are investigated to test the effect of testing temperature, strain rate and environments. Microstructural evolution during deformation is examined with optical microscopy, SEM and TEM, DTA/DSC and then correlated to the mechanical properties. The information provides an understanding of the deformation mechanism requirements for superplasticity and could lead to development of new and modified alloy and processing methods for next-generation gas turbine engines.

Laminated metal composites are studied for their fracture toughness, elevated temperature mechanical properties and damping characteristics for possible use as advanced as structural materials for aerospace and terrestrial applications.

Physical mechanism of superplastic flow

This research aims to characterize superplastic flow in different microstructural scales. Research is done at the scale of the entire deformed volume, at the scale of grain groups and at the scale of individual grains.

High-temperature deformation of titanium samples with superplastic layers

This work focuses on high-temperature mechanical behavior and progressive deformation characteristics on the scale of the entire deformed volume to individual grain groups of industrial-significant aluminum alloys with superplastic layers sandwiched between non-superplastic layers. This research will have important technological significance, and is carried out in collaboration with an industrial corporation.