In recent years, additive manufacturing (AM) has emerged to be an attractive technique to fabricate multilayered complex structures with superior mechanical, thermal, chemical, and physical properties. It is possible to fabricate the various grades of engineering materials/alloys such as steel, titanium (Ti), aluminum, and high entropy alloys (HEA) using AM process. Among all, the mechanical properties of these AM-processed alloys are of keen importance due to their applications in the aerospace, automobile, and structural materials sectors. Despite the comparable mechanical properties to conventionally fabricated alloys, the mechanical properties of AM-processed alloys are subject to vary according to the microstructural evolution during the process. In view of this, the present chapter addresses the complex interplay between the microstructure evolution of different AM-processed alloys as a result of variation in process parameters and subsequent resulting mechanical properties. An attempt has been made to present comprehensive information about the microstructural evolution of AM-fabricated steel, Ti, and HEA with special emphasis on various phase formation, grain and grain boundary (GB) morphology, and texture with a few post-processing techniques that further tune the above microstructural aspects.
Pour en savoir plus : Microstructure Evolution and Mechanical Properties of Alloys Fabricated via Additive Manufacturing
