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The demand for aluminum alloys is increasing because of their lightness, high specific strength and other attractive properties, which can exploited in improved products for a greener environment. This book gives a correlation between the processing, microstructure and properties of several aluminium alloys. Some of them are well established and used in an enormous number of applications, while others are still under development. The processing spans from casting, rapid solidification, additive manufacturing, forming, heat-treatment and welding, which can produce interesting microstructures and a useful combination of properties.

Al alloy --- laser induced arc hybrid welding --- heat treatment --- microstructure --- wrought aluminium alloy --- homogenization annealing --- thermodynamic equilibrium --- intermetallic phases --- differential scanning calorimetry (DSC) --- characterization methods --- scalability --- mechanical properties --- aluminium alloys --- aluminium --- ageing --- quasicrystal --- transmission electron microscopy --- aluminium alloy --- SLM --- auxetic structures --- numerical analysis --- fatigue --- Al alloy 7075-T6 --- ultrasonic fatigue --- artificial pits --- pre-corrosion --- crack initiation --- 7xxx aluminum series --- early precipitation stages --- corrosion --- Al3(Sc,Zr) particles --- annihilation of positrons --- activation energy --- material flow --- asymmetric weld --- tensile strength --- VPPA --- aluminum alloy AA5083 --- rapid solidification --- melt spinning --- high-strength aluminum --- extrusion --- bimodal microstructure --- precipitations

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In recent years, the requirements for technical components have steadily been increasing. This development is intensified by the desire for products with a lower weight, smaller size, and extended functionality, but also with a higher resistance against specific stresses. Mono-material components, which are produced by established processes, feature limited properties according to their respective material characteristics. Thus, a significant increase in production quality and efficiency can only be reached by combining different materials in a hybrid metal component. In this way, components with tailored properties can be manufactured that meet the locally varying requirements. Through the local use of different materials within a component, for example, the weight or the use of expensive alloying elements can be reduced. The aim of this Special Issue is to cover the recent progress and new developments regarding all aspects of hybrid bulk metal components. This includes fundamental questions regarding the joining, forming, finishing, simulation, and testing of hybrid metal parts.

tailored forming --- bulk metal forming --- geometry measurement --- wrought-hot objects --- turning --- process monitoring --- feeling machine --- benchmark --- lateral angular co-extrusion --- mechanical behavior --- hybrid metal components --- ultrasound --- laser beam welding --- excitation methods --- melt pool dynamics --- nickel base alloy 2.4856 --- membrane mode enhanced cohesive zone elements --- damage --- joining zone --- cross-wedge rolling --- welding --- PTA --- LMD-W --- forming --- rolling --- coating --- hybrid bearing --- residual stresses --- X-ray diffraction --- rolling contact fatigue --- bearing fatigue life --- AISI 52100 --- plasma transferred arc welding --- residual stress --- scanning acoustic microscopy --- hybrid components --- bevel gears --- hot forging --- process-integrated heat treatment --- air-water spray cooling --- self-tempering --- aluminum-steel compound --- intermetallic phases --- co-extrusion --- nanoindentation --- multi-material --- IZEO --- topology optimization --- computer-aided engineering environment --- GPDA --- manufacturing restrictions --- composites --- HSHPT --- nano multilayers --- Ni-Ti --- SPD --- friction welding --- surface geometry modification