Microstructure Atlas of P91 Steel

This book highlights the qualitative and quantitative sequential changes in microstructure of P91 steel under various stress and temperature conditions. The P91 alloy is an established material used under elevated temperature and stress in the components of thermal power plants. Temperature and stress levels for laboratory experimentation have been selected based on the true operating condition of a boiler. This book describes both full length as well as interrupted tests that were performed under given parameters. Subsequently, the microstructures, bulk hardness and NDE parameters (magnetic and non-linear ultrasonic) have been evaluated. For reliable data, the microstructures have been observed at different regions of creep exposed samples by different characterization techniques. This has been further followed by drawing co-relation between specific features like precipitate size variation with creep strain / creep time and so on. Given the contents, this book will be a useful reference for researchers and professionals working in the area of materials especially in thermal power plants.

Dr. Rajat K. Roy is currently positioned as a Principal Scientist at CSIR-National Metallurgical Laboratory, Jamshedpur (India). After completing his Bachelor of Engineering and Master of Engineering in Metallurgy from Bengal Engineering College, Shibpur, Howrah (India), he obtained his Ph.D. degree in Metallurgical and Materials Engineering from Indian Institute of Technology, Kharagpur (India). His research areas are compositional design and development of nanostructured and amorphous materials through rapid solidification, metal joining (brazing), characterization of ferritic steels by electromagnetic NDE. He has authorships of 54 papers in SCI journals, 12 patents, 3 copyrights and 2 book chapters. Dr. Roy has exposures on the development of nanomaterials in Carnegie Mellon University, Pittsburgh (USA) under BOYSCAST fellowship and Korea University, Seoul (Republic of Korea) under BK21 program.Dr. Avijit Kumar Metya has been working at CSIR- NML, Jamshedpur (India) as Principal Scientist. He obtained his B.E. (Mechanical) from Jalpaiguri Government Engineering College, West-Bengal (India); M.Tech in Materials Engineering from BESU, Shibpur (Currently IIEST, Shibpur) Shibpur, Howrah (India) and PhD from Indian Institute of Technology Madras, Chennai (India). His major research interests include Ultrasonic NDE, acoustic wave propagation through materials, mechanical behaviour of materials. He has published 16 papers in International Journals. Dr. Metya received NDT Young Scientist/ Engineer Award in 2011 from Indian Society for Nondestructive Testing.Dr. Ashis K. Panda is working as Senior Principal Scientist in the Non-destructive Evaluation and Magnetic Materials (NDEMM) group of Advanced Materials & Processes (AMP) Division of National Metallurgical laboratory, Jamshedpur (India). He obtained his Ph.D degree in Materials Science from Indian Institute of Technology, Kharagpur (India) in the year 2002. His research interest is in the development of magnetic alloys (nanostructured, ferromagnetic shape memory, magnetocaloric) through rapid solidification, non- destructive evaluation through magnetic techniques and development of magnetic sensors. He has research experience in Slovak Academy of Science (SAS), Bratislava, Slovakia and National Institute of Materials Science (NIMS), Tsukuba, Japan under Indian National Science Academy (INSA) visiting program and CSIR-Raman Research fellowship respectively. He has about 94 publications in SCI journals and has filed 8 patents.Dr. M. Ghosh is at present Senior Principal Scientist in Microstructural Engineering Group of Materials Engineering Division, CSIR-National Metallurgical Laboratory, Jamshedpur 831007 (India). After completing B. E. in Metallurgy from Bengal Engineering College, Shibpur, Howrah 711103 (India) and M. E. in Physical Metallurgy from BE College (Deemed University), Howrah 711103 (India), he obtained his Ph.D in Engineering from BESU, Howrah 711103 (India). Dr. Ghosh was awarded with