Engineering Science and Materials Commons^™

Investigation Of Microstructure And Mechanical Behavior Of Novel Powder-Extruded Al-Ce-Mg Alloys, Mairym Vazquez

Doctoral Dissertations

Pursuing advanced structural materials with enhanced performance, reduced weight, and lower costs is a constant endeavor in the aerospace and automotive industries. Conventional structural alloys, such as cast irons, carbon steels, and titanium alloys, have strength, weight, and cost limitations. Aluminum-based alloys, known for their lightweight and high strength, have gained popularity in these industries. This dissertation focuses on investigating microstructure and mechanical behavior of novel powder-extruded Al-Ce-Mg alloys as potential candidates for high-performance structural materials.

This research explores using powder extrusion, a well-established forging methodology in the steel industry, to produce Al-Ce-Mg alloys with improved properties and aims to …

Development And Characterization Of Stable Low-Cost Salt Hydrate-Based Phase Change Materials For Thermal Energy Storage Applications, Damilola Olayinka Akamo

Doctoral Dissertations

Energy storage technologies are gaining attention due to rising utilization of renewable energy sources. One of the viable energy storage technologies is thermal energy storage (TES) in which system stores and releases thermal energy for various uses. Applications for TES systems include building systems, space heating and cooling, and refrigeration. Several TES systems use phase change materials (PCMs) to operate near-isothermally owing to phase change latent heat. Inorganic salt hydrate PCMs are popular because to their inexpensive cost, high energy density, and near ambient phase transition temperature. However, salt hydrate PCMs have phase separation, low thermal conductivity, and supercooling issues …