Rajiv S. Mishra is a professor in the Department of Materials Science and Engineering, and Site Director, NSF IUCRC for Friction Stir Processing, at the University of North Texas. Dr. Mishra’s publication record includes 255 papers. Out of these, 10 of his papers have more than 100 citations. He has many ‘firsts’ in the field of friction stir welding and processing. He co-authored the first review paper (2005), co-edited the first book on the subject (2007), edited/co-edited seven TMS symposium proceedings, and served as guest editor for Viewpoint Set in Scripta Materialia (2008). He also has three patents in this field. He published the first paper on friction stir processing (2000) as a microstructural modification tool. Dr. Indrajit Charit is an associate professor at the University of Idaho. He has authored/co-authored 40 journal papers and 32 proceeding papers, and made several conference presentations. He teaches mechanical behavior of materials, physical metallurgy and nuclear materials related courses. He is a member of TMS, ASM International and ANS. He is a licensed professional engineer in the state of Idaho. Ravi Sankar Haridas is a post-doctoral research associate in the Department of Materials Science and Engineering at the University of North Texas. His research interestes include experimental solid mechanics, friction stir welding/processing, metal additive manufacturing, solid state processing, high strain rate deformation, impact mitigation, microstructure-property correlation, and high entropy alloys.