PREFACE
2019 Volume 60 Issue 7 Pages 1103
Details
2019 Volume 60 Issue 7 Pages 1103
We are pleased to edit a special issue covering recent advances associated with severe plastic deformation (SPD). The process of SPD has received significant attention as a powerful tool to produce ultrafine-grained structures with enhanced mechanical properties in many metallic materials. Recent studies further demonstrated that the SPD process has high potential in controlling micro- and nano-structures of nonmetallic materials such as ceramics and semiconductors to exhibit unique structural and functional properties. In this special issue, many scientists were invited to submit papers related to the SPD process including studies of microstructures features, analyses of crystal structures, measurements and evaluations of structural and functional properties. Most of the invited papers appeared in the forms of review and overview. This special issue thus provides a wide range of the current status as well as of the historical background for SPD-related researches using experimental and theoretical approaches.
Thus far, Materials Transactions published three special issues on the SPD-related subject under the title of Severe Plastic Deformation for Production of Ultrafine Structures and Unusual Mechanical Properties: with subheadings of Investigating Role of High-Density Lattice Defects in 2007, Understanding Mechanisms in 2008, and Aiming Breakthrough in Materials Development in 2009. We have also organized the International Symposium/Workshop on Giant Straining Process for Advanced Materials (GSAM) since 2008. Proceeding books are available for the GSAM Symposium/Workshop in 2010, 2015, 2016, 2017 and 2018. Such GSAM series of meetings have been organized to provide a platform where scientists and engineers dealing not only with SPD but also with various research fields meet to exchange idea and opinion based on up-to-date results on mechanical and functional properties. It should be noted that the GSAM2010 symposium was held, for the first time, for multifunctionality with the title of Production of Multifunctional Materials Using Severe Plastic Deformation. Many authors in this special issue participated in one or more of the GSAM series of the symposium/workshop. We appreciate again their contributions to this special issue. In fact, it turns out that the total of more than 40 papers were submitted to this special issue, which are then 4 times as large as we initially expected. Therefore, the accepted papers are published by splitting into the July and August issues in 2019. Finally, we would like to express our sincere thanks to reviewers for devoting their valuable time to provide very useful and productive comments and advices to improve quality of this special issue. Our financial acknowledgement is to a Grant-in-Aid for Scientific Research (A) from the MEXT, Japan (19H00830) for promoting SPD research and development.
