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The Structural Evolution during Low Temperature Carburization of 17-7 Precipitation Hardened Stainless SteelChen, Chieh-Wen 30 January 2012 (has links)
No description available.
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Magnesium Sulfonyldibenzoates: Synthesis, Structure, Phase Transformation and Microscopic StudiesLucas, Kaitlyn D. January 2013 (has links)
No description available.
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Modeling of Shape Memory Alloys: Phase Transformation/Plasticity Interaction at the Nano Scale and the Statistics of Variation in Pseudoelastic PerformanceParanjape, Harshad Madhukar January 2014 (has links)
No description available.
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Orientation and Alloying Effects on Creep Strength in Ni-Based SuperalloysSmith, Timothy M., Jr. January 2016 (has links)
No description available.
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Engineering the Alpha Two Phase Morphology in Gamma TiAl Based AlloysMeisenkothen, Frederick 04 February 2003 (has links)
No description available.
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Theory and modeling of microstructural evolution in polycrystalline materials: solute segregation, grain growth and phase transformationMa, Ning 19 April 2005 (has links)
No description available.
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Influence of Beta Instabilities on the Early Stages of Nucleation and Growth of Alpha in Beta Titanium AlloysNag, Soumya 19 March 2008 (has links)
No description available.
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Effect of Alloying on Microstructure and Precipitate Evolution in Ferritic Weld MetalNarayanan, Badri Kannan 08 September 2009 (has links)
No description available.
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Grind Hardening of AISI 1045 and AISI 52100 SteelsSohail, Razi 12 1900 (has links)
<p> Case hardening of steels is extensively used throughout general engineering to produce components with a hardened layer whilst retaining a tough core. This is usually accomplished using different sources of energy, e.g. flame and induction being the most common. In recent years, a new case hardening technology, named 'Grind-Hardening' has surfaced. In this method, the heat dissipated during grinding is utilized to induce martensitic phase transformation in the surface layer of a component. Therefore it is possible to incorporate grinding and surface hardening into a single operation to develop a cost-effective production method. The grinding process then becomes an integrated heat treatment process.</p> <p> In the present study on 'grind hardening', a numerical thermal model has been developed to compute the temperature distribution beneath the ground surface to predict the extent of surface hardening and the case depth. Grinding experiments were conducted in order to examine the influence of various process variables such as wheel depth of cut, feed speed, and wheel preparation. AISI 52100 and 1045 steels were used in this study to evaluate the behavior of plain and alloy steels during grind hardening. Effective case depth was measured using a Vickers hardness tester and was found to be over 0.5 mm for a target hardness of 513 Hv. Microstructure was analyzed using optical and scanning electron microscopes. The microstructure was observed to have fine martensitic laths which give rise to remarkable high hardness.</p> / Thesis / Master of Applied Science (MASc)
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Electron Microscopy Study of the Chemical and Structural Evolution of Lithium-Ion Battery Cathode MaterialsLiu, Hanshuo 11 1900 (has links)
Layered lithium transition metal oxides represent a major type of cathode materials that are widely used in commercial lithium-ion batteries. Nevertheless, these layered cathode materials suffer structural changes during electrochemical cycling that could adversely affect the battery performance. Clear explanations of the cathode degradation process and its initiation, however, are still under debate and are not yet fully understood. In this thesis, the cycling-induced chemical and structural evolution of LiNi1/3Mn1/3Co1/3O2 (NMC) and high-energy Li1.2Ni0.13Mn0.54Co0.13O2 (HENMC) cathodes are investigated in details using state-of-the-art electron microscopy techniques combined with other bulk measurements to uncover the mechanisms at the source of cell deterioration. / Thesis / Doctor of Philosophy (PhD)
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