Shashanka Rajendrachari is a Professor in the Department of Chemistry, Global Academy of Technology, Bengaluru, India. He was previously an Assistant Professor in the Department of Metallurgical and Materials Engineering, Bartin University, Turkey. He earned a PhD at the National Institute of Technology, Rourkela, India. He is the first recipient of the prestigious Powder Metallurgy Student of the Year Award by the Powder Metallurgy Association of India for 2015 at IIT Bombay. He was awarded the prestigious Young Scientist 2020 Award at the Fourth International Scientist Awards ceremony on engineering, science, and medicine in Chennai, India. He is listed in the top 2% of scientists in the world for 2020, 2021, 2022, and 2023, as reported by Stanford University, USA, and published by Elsevier. He was awarded third place for the project competition in the Fifth R&D Project Market held in Turkey in 2022. He is experienced in preparing nano-structured stainless-steel powders, high entropy alloys, and shape memory alloys by the mechanical alloying method. He has more than eight years of research and teaching experience and has published more than 80 research articles, 1 German patent, 18 books and 15 book chapters in various peer-reviewed international publications. He has more than 3000 citations. His areas of research include powder metallurgy, mechanical alloying, nanomaterials, corrosion, electrochemical sensors, etc.

Section I: Introduction to High Entropy Alloys. 1. A Brief History and the Advances of High-Entropy Alloys. 2. An Introduction to High-Entropy Alloys. Section II: Preparation and Characterization of High-Entropy Alloys. 3. Preparation of High-Entropy Alloys by Various Metallurgical Methods. 4. Thermodynamic Designing of High-Entropy Alloys. 5. Advanced Characterization of High-Entropy Alloys. Section III: Properties of High-Entropy Alloys. 7. Mechanical and Structural Properties of High-Entropy Alloys. 8. Thermal Stability of Nanocrystalline High-Entropy Alloys (HEAs) Synthesized by Mechanical Alloying (MA). 9. Corrosion and Radiation Resistance Properties of High-Entropy Alloys. Section IV: Applications of High-Entropy Alloys. 10. High-Entropy Alloys as Alternatives to Ni-Based Superalloys. 11. Aerospace Applications of High-Entropy Alloys. 12. Novel Electrochemical Sensing Applications of High-Entropy Alloys. 13. Applications of High-Entropy Alloys as Catalysts and as Coating Materials. 14. Other Advanced Applications and the Future of High-Entropy Alloys.