Electron Microscopy Characterization Of Magnesium Based Composites And Aluminium Alloys Processed Under The Influence Of External Fields

Magnesium matrix composites, as light and strong materials, are very attractive for different industrial fields. In the present work, nano and micro-composites reinforced with ceramic particle (1 wt.%) were fabricated with ultrasonic-assisted process. Microstructural characterization was investigated by Transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The investigation revealed Complex phenomena and different behaviors between particles in terms of particle pushing, particle agglomeration, chemical reactions reaction and in situ formation of new particles in the melt. The EL21+AlN composite exhibits the best mechanical properties which were correlated to its microstructure. A three bodies model was applies to our composites systems, this model give an estimation of the possibility of nanoparticle capture through calculation of the Hamaker constant of each system. This model allowed also the correlation between the good mechanical properties of the EL21+AlN composite.

The major issue of energy saving and conservation of the environment in the world is being emphasized to us to concentrate on lightweight materials in which aluminium alloys are contributing more in applications in the twenty-first century. Aluminium and its related materials possess lighter weight, considerable strength, more corrosion resistance and ductility. Especially from the past one decade, the use of aluminium alloys is increasing in construction field, transportation industries, packaging purposes, automotive, defence, aircraft and electrical sectors. Around 85% is being used in the form of wrought products, which replace the use of cast iron. Further, the major features of aluminium alloy are recyclability and its abundant availability in the world. In general, aluminium and its related materials are being processed via casting, drawing, forging, rolling, extrusion, welding, powder metallurgy process, etc. To improve the physical and mechanical properties, scientists are doing more research and adding some second-phase particles in to it called composites in addition to heat treatment. Therefore, to explore more in this field, the present book has been aimed and focused to bridge all scientists who are working in this field. The main objective of the present book is to focus on aluminium, its alloys and its composites, which include, but are not limited to, the various processing routes and characterization techniques in both macro- and nano-levels.

Fundamentals of Aluminium Metallurgy: Recent Advances updates the very successful book Fundamentals of Aluminium Metallurgy. As the technologies related to casting and forming of aluminum components are rapidly improving, with new technologies generating alternative manufacturing methods that improve competitiveness, this book is a timely resource. Sections provide an overview of recent research breakthroughs, methods and techniques of advanced manufacture, including additive manufacturing and 3D printing, a comprehensive discussion of the status of metalcasting technologies, including sand casting, permanent mold casting, pressure diecastings and investment casting, and recent information on advanced wrought alloy development, including automotive bodysheet materials, amorphous glassy materials, and more. Target readership for the book includes PhD students and academics, the casting industry, and those interested in new industrial opportunities and advanced products. Includes detailed and specific information on the processing of aluminum alloys, including additive manufacturing and advanced casting techniques Written for a broad ranging readership, from academics, to those in the industry who need to know about the latest techniques for working with aluminum Comprehensive, up-to-date coverage, with the most recent advances in the industry