Browsing Materials Engineering (MatEng) by Title
Now showing items 48-67 of 311
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Diffusion-Controlled Growth of Phases in Metal-Tin Systems Related to Microelectronics Packaging
(2018-08-28)The electro–mechanical connection between under bump metallization (UBM) and solder in flip–chip bonding is achieved by the formation of brittle intermetallic compounds (IMCs) during the soldering process. These IMCs ... -
Dry Sliding Wear of Saffil Short Fibre Reinforced AZ91D Mg Alloy Composite
(2018-03-01)Magnesium alloys have emerged as a promising material for light-weighting due to their potential for higher weight saving compared with advanced high-strength steel, aluminium alloys and glass fibre reinforced polymer ... -
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 Atomic Mobility In The Precipitate Phase On Coarsening : A Phase Field Study
(2010-10-28)In this thesis, we have used a phase field model for studying the effect of atomic mobility inside the precipitate phase on coarsening behaviour in two dimensional (2D) systems. In all the available coarsening theories, ... -
Effect of Cobalt Content on Microstructure and Strength in Severely Cold Drawn Ni-Co wires
The future upcoming technologies in aerospace, transport and nuclear industries demand materials with superior mechanical properties that are also economically viable. The quest to achieve theoretical strength of material ... -
Effect of Copper on Strength of Super 304H Austenitic Stainless Steel
Super 304H is a copper-containing austenitic stainless steel with potential applications in advanced thermal power plants owing to its superior corrosion, oxidation, creep resistances and cost affordability. The addition ... -
Effect of Electric Current Pulses on Pre-cracked Thin Metallic Conductors: From Crack Propagation to Healing of Cracks
Both scientifically and technologically, it is important to investigate the effects of electric current on the structural integrity of metallic components. As an electric current reverses its direction across a crack, ... -
Effect Of Free-Volume On The Fracture And Fatigue Of Amorphous Alloys
(2010-07-01)Bulk metallic glasses (BMGs) are a new class of structural materials and exhibit unique combinations of mechanical properties. As a result, their mechanical behavior has been an active area of scientific pursuit in the ... -
Effect of Heat Treatment and Modification on Flow and Fracture Behaviour of a Newly Developed Al-Si Based Cast Alloy
(2018-04-17)The compression behavior of a newly developed near eutectic Al-Si based cast alloy with three different microstructures has been investigated in the present work. Microstructures with modified and unmodified Si particles ... -
Effect of High Pressure Torsion Processing on Precipitate Containing Alloys
Severe plastic deformation (SPD) processes yield excellent grain refinement in metallic materials by application of very large shear strains while retaining the initial sample dimensions. Its effects on simultaneously ... -
Effect of High-Pressure Torsion and Natural Ageing on Hardness, Electrical Resistivity and Fatigue Properties of Commercially Pure Cu
Commercially pure Cu was processed through high-pressure torsion (HPT) at a pressure of 6 GPa starting from ¼ up to 50 turns. These samples were then naturally aged for 1.75 years under the laboratory condition. Subsequently, ... -
Effect of Humidity and Temperature on Wear of TiN and TiAIN Coatings
(2018-05-30)When loss of material due to sliding of two solids is promoted/prevented, in the presence of chemically reacting liquid or gas, tribochemical wear is said to occur. Tribochemical wear, in which corrosive media promotes ... -
Effect of Length Scale on High Temperature Mechanical Behavior of Sn-Cu Joints: A Mechanics and Material Science Based Treatment
With the ongoing miniaturization of microelectronic devices, the size of compliant solder in microscale solder joints has significantly reduced, proportion of brittle phases has increased, and the microscale joints have ... -
Effect of Li Addition on the Plasticity of AZ31 Mg-Alloy
(2017-11-14)Mg-alloys, despite being the lightest structural metallic materials, find limited applications due to their poor workability, which is due to the hcp structure that does not provide sufficient number of independent slip ... -
Effect of microstructure and texture on the dwell fatigue behaviour of titanium alloys
Ever since the failure of the fan blades of the Rolls Royce gas turbine engine that powered the Lockheed Martin tristar aircraft in 1972, ambient temperature dwell fatigue (DF) in titanium alloys has received considerable ... -
Effect of off-stoichiometry, grain size and chemical substitution on microstructure, global structure, electromechanical and energy storage properties of lead free Na0.5Bi0.5TiO3 (NBT) based piezoceramics
Ferroelectric and piezoelectric materials, especially the polycrystalline ceramics, are promising candidates for application in pressure sensors, actuators, transducers, ultrasonic motors, energy storage capacitors, ... -
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 Processing And Test Variables On The Deformation Characteristics Of Tantalum
(2016-11-23)The dependence of flow stress of body centered cubic metals on variables such as strain rate, temperature, strain and microstructural is a research area of continued interest. Recently, there has been renewed interest in ... -
Effect of Processing Mg-6zn-0.2ce Through High-pressure Torsion on Its Use as a Biomaterial
Here, we investigate the effect of high-pressure torsion (HPT), a severe plastic deformation process, on the mechanical properties, corrosion, and cytotoxicity of Mg-6Zn-0.2Ce alloy, a candidate material for bioresorbable ... -
Effect of processing on texture and microstructure in Aluminium-Lithium alloys and its consequences on mechanical properties
Lightweight Aluminium -Lithium based alloys have high potential for use in aerospace structural components. However, large anisotropy in mechanical properties restricts the use of these alloys. The alloy AA2195 (Al-Li-Cu-Mg-Ag-Zr) ...