Acknowledgements

The authors are grateful to Prof. Brian Cantor for readily agreeing to write a foreword for the book, in spite of his hectic schedule as Vice Chancellor of the University of Bradford, UK. They are also highly indebted to all the authors of various papers that are referred to in this book. Their contributions have enhanced the quality of the book.

Prof. Murty would like to specially thank his group members, Mayur, Guruvidyathri, Anirudh, Arul, Ameey and Dr. Sanjay, who have untiringly helped at various stages of the book. He would also like to gratefully acknowledge the collaboration with his students, Varalakshmi, Praveen, Pradeep, Sriharitha, Ashok, Durga, Raghavan and collaborators Dr. Ravi Sankar Kottada, Prof. M. Kamaraj and Prof. K.C. Hari Kumar, Dr. Sheela Singh, Dr. N. Wanderka and Prof. J. Banhart and Prof. D. Raabe. He is also indebted to his family members for their patience and continuous support.

Prof. Yeh would like to thank two important group members, Prof. Su-Jien Lin and Prof. Swe-Kai Chen, for their long-term contributions in the research on high-entropy alloys since 1995. He also expresses sincere thanks to Profs. Tsung-Shune Ch in, Jan-Yiaw Gan, Tao-Tsung Shun, Chun-Huei Tsau, Shou-Yi Chang, Tung Hsu, Wen-Kuang Hsu and all graduate students for their significant efforts and contributions in HEA-related research. In addition, he specially thanks Dr. Chun-Ming Lin and PhD student Chien-Chang Juan for their help in searching related papers, plotting figures and providing suggestions for this book. Finally, he gratefully thanks his beloved wife and daughters for all their encouragement and support during writing this book.

Prof. Ranganathan records his gratitude to numerous teachers, colleagues and students who instilled in him an abiding interest in physical metallurgy. Special thanks are due to T.R. Anantharaman, K.P. Abraham, C.N.R. Rao, P. Rama Rao, Alan Cottrell, David Brandon, Robert Cahn, A.L. Mackay, Gareth Thomas, J.W. Cahn, P. Ramachandra Rao, K. Chattopadhyay, D. Shechtman, K.H. Kuo and A. Inoue. Discussions with T.A. Abinandanan and Abhik Choudhury were stimulating. The work of Sudarshna Kalyanaraman on HEA is also acknowledged with appreciation. Grateful thanks are expressed to members of his family for support in writing this book.

The authors are deeply indebted to the meticulous reading of the entire book by Dr. R. Krishnan and thank him profusely for his useful suggestions.