Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 152 for “"PHASE TRANSFORMATIONS"”.
-
Phase transformations in vitallium alloys
Thesis (B.S.) Massachusetts Institute of Technology. Dept. of Metallurgy, 1946.
-
Understanding phase transformations during flash sintering
… oxidation of elements, and locally cause transformations, flash sintering also provides a method of synthesizing compositions that would be difficult to produce conventionally. Although flash sintering is a technique with great potential to improve or expand upon current synthesis methods, …
-
Phase transformations in welded supermartensitic stainless steels
… of the potentially detrimental δ- ferrite phase, and the development of a model to facilitate the choice of a suitable post-weld heat-treatment temperature. The microstructural examination of a variety of welds revealed the presence of retained δ-ferrite in dual-phase and grain-coarsened …
-
Phase Transformations in Nearly Stoichiometric Nickel-Manganese Alloys
… transformation between the (beta) and (theta) phases takes place, while in Ni-rich alloys an order-disorder transformation between the (gamma) and (theta) phases takes place.
-
Phase-Transformations in Metastable Beta' Copper - Zinc Alloys
Made available in DSpace on 2014-12-12T01:04:06Z (GMT). No. of bitstreams: 1 7317520.pdf: 9253816 bytes, checksum: 13b83df262a95b2cdbb3dd7f10a365e8 (MD5) Previous issue date: 1973
-
Kinetics of phase transformations in lithium-sulfur batteries
Sulfur is a promising positive electrode for lithium batteries with the potential to create the step-change improvement in energy density and cost needed for the widespread adoption of electric vehicles and renewable energy. However, lithium-sulfur batteries suffer from a number of challenges, …
-
Nanocrystalline Fe-Pt alloys: phase transformations, structure and magnetism
This work has been devoted to the study of phase transformations involving chemical ordering and magnetic properties evolution in bulk Fe-Pt alloys composed of nanometer-sized grains. A comprehensive study of phase transformations and ordering in Fe-Pt alloys is performed by a combination of …
-
Phase Transformations Involving Interstitial Ordering in the Vanadium - Nitrogen System
Made available in DSpace on 2014-12-12T01:04:02Z (GMT). No. of bitstreams: 1 7114913.pdf: 4536871 bytes, checksum: 68fc3523beabb6e773e2e79475d2e932 (MD5) Previous issue date: 1970
-
An investigation of phase transformations in Pt-V coating systems
Phase transformations in Pt-V coatings after heat treatment have been investigated. Five Pt- V ordered phases (PtV, PtV 3 , Pt 2 V, Pt 3 V and Pt 8 V) have been previously observed in bulk platinum-vanadium alloys. Phase formation in coatings is expected to be sequential and controlled by the …
-
Phase transformations in layered electrode materials for sodium ion batteries
… layered oxides exist in several different host phases depending on sodium content and temperature at synthesis. Unlike their lithium ion counterparts, seven first row layered TM oxides can intercalate Na ions reversibly. Their voltage curves indicate significant and numerous reversible phase …
-
Characterization of Stresses and Strains Involved in the Martensitic Phase Transformations
… industry, where strain-induced martensitic transformations, associated plasticity and work hardening, enhance both the strength and ductility of the material. This has enhanced both the passenger safety (improved crash-performance) and fuel efficiency as less material is consumed (lighter …
-
Modeling phase transformations in single and polycrystalline aggregate and grain growth
… present a comprehensive study on the scale-free phase-field approach, augmented by finite element method simulations, to investigate multivariant martensitic phase transformations in crystalline aggregates. Central to our exploration is a model meticulously developed to scrutinize phase …
-
Phase transformations and deformation behavior in the aluminum-lithium-zirconium system
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1985.
-
Structure of and Phase Transformations in Bulk Amorphous (GaSb)i_x(Ge2)I
… of three dimensional percolation processes, and phase transformations in general, and significantly contributes to the understanding of physics of disordered solids. The importance of structural studies can hardly be overestimated. Structure determines the major properties of materials: …
-
Grain-Boundary Parameters Controlled Allotriomorphic Phase Transformations in Beta-Processed Titanium Alloys
… microstructural feature of the diffusional phase transformations in beta-processed titanium alloys. This phase has a negative influence on various mechanical properties, such as high cycle fatigue, fracture toughness, ductility etc. and has a profound influence on the overall microstructural …
-
Phase Transformations in Lanthanide Calcium Manganese Oxide: Charge Ordering and Phase Competition
Charge ordering (CO) phase transformations in La1-xCa xMnO3 were studied at Ca doping levels x = 0.33, 0.50, 0.67, 0.75 and 0.77. Temperature-controlled in-situ electron diffraction and high resolution dark field images were carried out to investigate the phase competitions between CO and other …
Page 1 of 8