Browsing by Advisor "Banerjee, Dipankar"
Now showing items 1-11 of 11
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Dynamic Strain Aging and Creep in near-α Ti Alloy, IMI834
IMI 834 is a near- Ti alloy used in high temperature applications such as compressor discs and blades of aero engines. Titanium alloys including IMI 834 are known to exhibit dynamic strain aging (DSA) over the temperature ... -
Effect of Process Parameters on the Growth of N-Polar GaN on Sapphire by MOCVD
(2017-09-20)Group III-Nitrides (GaN, InN & AlN) are considered one of the most important class of semiconducting materials after Si and GaAs. The excellent optical and electrical properties of these nitrides result in numerous ... -
Effect of Thermomechanical Processing on Microstructure And Microtexture Evolution in Titanium Alloys
(2017-09-26)The properties of titanium alloys are based on alloy compositions and microstructures that consist of mixtures of the two allotropic modifications of titanium, the low temperature α (hcp) and the high temperature β (bcc) ... -
An Evaluation of the Mechanical Behavior of some new High Temperature Materials
Two new high-temperature alloy systems have been discovered recently at the Indian Institute of Science, which form the basis of this thesis. The first alloy system is an Intermetallic-Intermetallic eutectic composite ... -
Mechanical Behavior of a Directionally Solidified Nickel-based Superalloy Su 247LC DS at Elevated Temperature
Directionally solidified Nickel-based superalloys are the workhorse for the Jet Engine turbine rotor blades and nozzle guide vanes (NGV) applications. Su 247LC DS is the material used for turbine rotor blades and NGVs of ... -
Microstructural Evolution of Directionally Solidified Ni-Al-Re/Ru Alloys
Nickel based superalloys are high temperature materials which find application as blade and disc components of jet engines due to their ability to retain their mechanical properties at temperatures close to 0.8 of their ... -
Microstructural, Mechanical and Oxidation Behavior of Ni-Al-Zr Ternary Alloys
(2018-01-09)The thesis introduces a novel alloy system based on submicron distributions of intermetallic phases realised through eutectic solidification in the ternary system Ni-Al-Zr. Various compositions in this system comprising ... -
Microstructure and Shape Memory Behavior of quaternary Ni(50-x)-(Pt/Pd)x-Ti(50-y)-(Hf/Zr)y alloys
Shape memory alloys (SMA) are those class of alloys that can cause shape memory, pseudoelastcity and two-way memory effects due to reversible austenite to martensite phase transformations. The NiTi shape memory alloys ... -
Observational study of decayless waves across different scales in the solar corona
The long-standing problem of coronal heating focuses on probing sources that can continuously supply energy to sustain million-degree temperatures. Magnetohydrodynamic (MHD) waves play a crucial role because their dissipation ... -
TEM Characterization of Microstructural Evolution of GaN Grown by MOCVD on c-Sapphire
III-Nitrides (AlN, GaN, InN) find use in the high-power high frequency applications. Bulk GaN substrates are difficult to grow, therefore the GaN based structures must be grown on foreign substrates. In this thesis, ... -
Understanding the Behavior of the Sun's Large Scale Magnetic Field and Its Relation with the Meridional Flow
(2018-07-05)Our Sun is a variable star. The magnetic fields in the Sun play an important role for the existence of a wide variety of phenomena on the Sun. Among those, sunspots are the slowly evolving features of the Sun but solar ...