Fabricating Ultrafine-Grained Materials through the Application of Severe Plastic Deformation: a Review of Developments in Brazil

Considerable attention is now being devoted to the fabrication and properties of ultrafine-grained materials processed through the application of severe plastic deformation. The two main processing techniques for SPD are equal-channel angular pressing and high-pressure torsion. Ten years ago, in 2002, the first Brazilian research paper was published describing the results obtained from a material processed using an SPD technique. Since that time, Brazilian materials scientists have made, and are continuing to make, major contributions to this important field. This tenth anniversary, and the introduction of a new Brazilian research journal, provides an excellent opportunity to summarize the main principles of SPD processing and then to review the major contributions from Brazil in the field of SPD.