ABSTRACT
In this chapter, the term “new materials” is discussed, associating it with any material that was recently developed and possessed significantly different properties than the “traditional” ones. Among important features of the new materials are nanosize elements of the structure and new functionalities, such as properties regulation, self-healing, reprocessing, solid state recycling, and controllable degradation. Due to awareness of the entire life cycle of the product, the application of these new materials is presented in the context of the circular economy concept, which can be described in the form of 6R practical framework, namely reduction, repair, reuse, recovery, remanufacturing, and recycling. In this context, the following processes are included in the chapter: foam injection molding, gasodynamic densification of casting materials, diamond and electro-discharge diamond grinding, electro-discharge machining methods, electrochemical machining methods, ultrasonic machining methods, electron beam machining, ion beam machining, laser and plasma processing, waterjet cutting, respective trends in joining technologies, and methods increasing machining accuracy.
