Materials Engineering (MatEng): Recent submissions
Now showing items 181-200 of 320
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Evolution of Microstructure and Texture during Severe Plastic Deformation of a Magnesium-Cerium Alloy
(2018-01-03)Magnesium alloys have poor formability at room temperature, due to a limited number of slip systems owing to the hexagonal closed packed structure of magnesium. One possibility to increase the formability of magnesium ... -
Experimental and Numerical Investigation on Friction Welding of Thixocast A356 Aluminium Alloy
(2017-12-01)The challenges of weight reduction and good strength in automotive industry have drawn considerable interest in thixocasting technologies. Joining of such components with conventional fusion welding creates voids, hot ... -
Some Processing and Mechanical Behavior Related Issues in Ti-Ni Based Shape Memory Alloys
(2017-11-30)Shape memory alloys (SMAs) exhibit unique combination of structural and functional properties and hence have a variety of current and potential applications. The mechanical behaviour of SMAs, in particular the influence ... -
Destabilisation and Failure of Cylindrical Nanopores : A Phase Field Study
(2017-11-28)Phase field models have played an important role in shaping our understanding of a variety of micro structural phenomena in materials. Their attractive features include (a) their ability to capture instabilities in ... -
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 ... -
Design & Fabrication of Bio-responsive Drug Carriers Based on Protamine & Chondroitin Sulphate Biopolymers
(2017-10-26)The present thesis focuses on the fabrication of bio-stimuli responsive micro- and nano-carriers for drug delivery applications. In particular, the objective of this work is to investigate the possibility of using polypeptide ... -
Corrosion And Wear Behaviour of Plasma Electrolytic Oxidation And Laser Surface Alloy Coatings Produced on Mg Alloys
(2017-10-11)In the present investigation, surface coatings employing laser surface alloying (LSA) and plasma electrolytic oxidation (PEO) processes have been prepared on Mg alloys. The coatings have been investigated for corrosion and ... -
Some Mechanical Properties of Ti-6Al-4V-B Alloys
(2017-09-27)The alloys of Ti are extensively used in a number of industries with the α+β alloy Ti-6Al-4V (referred to as Ti64 hereafter) being the most popular. Recently, it was demonstrated that the addition of a small amount of B ... -
Engineering Bioactive And Multifunctional Graphene Polymer Composites for Bone Tissue Regeneration
(2017-09-26)The growing incidences of orthopedic problems globally have created a huge demand for strong bioactive materials for bone tissue engineering. Over the years, studies have shown chemical, physical, and mechanical properties ... -
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) ... -
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 ... -
Length Scale Effects in Deformation of Polycrystalline Nickel
(2017-09-20)The demand for compact, efficient and high performance electronic devices and sensor systems has become one of the primary driving force for rapid advancement in miniaturization of current technology. However, the attempt ... -
Microstructure Design And Interfacial Effects On Thermoelectric Properties Of Bi-Sb-Te System
(2017-09-07)Climate change is a subject of deep distress in today’s world. Over dependence on hydrocarbon has resulted in serious environmental problems. Rising sea level, global warming and ozone layer depletion are the mainstream ... -
Role Of Stacking Fault Energy On Texture Evolution In Micro- And Nano-Crystalline Nickel-Cobalt Alloys
(2017-05-24)Plastic deformation of metals and alloys are invariably accompanied by the development of texture. The origin of texture is attributed to the deformation micro-mechanisms associated with processing. The face-centered cubic ... -
Synthesis And Study Of Microstructure Evolution In Nanoparticles Of Immiscible Alloys By Laser Ablation Under Liquid Medium
(2017-05-21)The present thesis deals with synthesis of free alloy nanoparticles in immiscible alloy systems by the process of laser ablation under a liquid. In this process the alloy target is submerged in a liquid and the plume formed ... -
Study On Reactive Hot Pressing Of Zirconium Carbide
(2017-04-27)Group IV transition metal carbides are promising materials for high temperature structural application, due to their unique sets of properties such as high melting temperature, high temperature strength, hardness, elastic ... -
Densification, Oxidation, Mechanical And Thermal Behaviour Of Zirconium Diboride (ZrB2) And Zirconium Diboride - Silicon Carbide (ZrB2-Sic) Composites
(2016-11-23)Sharp leading edges and nose caps on hypersonic vehicles, re-entry vehicles and reusable launch vehicles are items of current research interest for enhanced aerodynamic performance and maneuverability. The unique combination ... -
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 ... -
Evolution Of Texture And Its Correlation With Microstructure And Mechanical Property Anisotropy In AA7010 Aluminum Alloy
(2016-07-12)Al-Zn-Mg-Cu-Zr based AA7010 aluminum alloy belongs to the class of heat treatable alloys and the semi-finished products are generally produced by hot rolling, forging or extrusion processes. It is well known that the ... -
Tensile Behavior Of Free-Standing Pt-Aluminide (PtAl) Bond Coats
(2016-05-03)Pt-aluminide (PtAl) coatings form an integral part of thermal barrier coating (TBC) systems that are applied on Ni-based superalloy components operating in the hot sections of gas turbine engines. These coatings serve as ...