Microstructure Atlas of P91 Steel

Dr. Rajat K. Roy is currently positioned as a Senior Principal Scientist at CSIRNational 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 3 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.

Mr. Anil K. Das is working as General Manager at NTPC Energy Technology Research Alliance (NETRA), the R&D wing of NTPC Limited (India). He is heading the Advanced Scientific Service Division there, which has labs/group related to Non-destructive Evaluation (NDE), Advanced Material Research, Creep & Fatigue, Corrosion and Environment, Analytical Chemistry, Lub & Transformer Oils, Coal & Combustion and Resin. He has done his B.Tech and M.Tech both from I.I.T. Kanpur (India). He has more than 30 years of experience in health and life assessment of power plant components. He was awarded National NDT Award in 2011 for Excellence in Application of NDE in Industries. He has filed 5 patents (2 granted) and 5 copyrights. He is life member of ISNT and member of ASNT. He is ASNT Level-3 certified in four NDT Methods (UT, MT, ET & PT) and CSWIP-Level 2 in PAUT. He is associated with more than 350 publications of reports and technical papers. His major work areas are advanced inspection and analysis tools for power plant components.

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 Ph.D. 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. Avijit Mondal is currently working as Senior Manager at NTPC Energy Technology Research Alliance (NETRA), India. He obtained his B.E and M.Tech. from Jadavpur University, Kolkata (India) and Ph.D. from the Indian Institute of Technology, Kanpur (India). His major research area includes structure properties correlation, advanced NDE methods for condition assessment, metallurgical degradation and failure analysis of power plant components. Before joining NTPC, he was working as visiting Research Scholar at the Pennsylvania State University, USA. He was awarded Shunsaku Katoh Award for most significant contributions to scientific research in the field of Microwave and RF power at the 1st Global Congress on Microwave Energy Applications (GCEMA 2008), Japan. He was selected as one of the two participants from IIT Kanpur for SAARC-JENESYS 2009 Program by the Japanese Government. He has authored about32 publications in international journals, conference proceedings and books. He has filed 2 patents and 4 copyrights. 

Dr. Ashis Kumar Panda is working as Senior Principal Scientist in the Functional Materials (FM) group of Advanced Materials & Processes (AMP) Division of National Metallurgical laboratory, Jamshedpur (India)

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.

Covers qualitative/quantitative microstructural features of creep exposed steels and variation of bulk hardness

Chapter 1: Creep Life of P91 steel.- Chapter 2: Microstructural details of as-received P91 (9Cr-1Mo) steel.- Chapter 3: Micrographs of creep interrupted P91 : T1°C temperature & s1 stress.- Chapter 4: Micrographs of creep interrupted P91 : T2°C temperature & s2 stress.- Chapter 5: Micrographs of creep interrupted P91 : T3°C temperature & s3 stress.- Chapter 6: Precipitate size of creep exposed P91: T1°C temperature & s1 stress.- Chapter 7: Vickers hardness of creep exposed P91 : T1°C temperature & s1 stress.- Chapter 8: Magnetic NDE parameters of creep exposed P91 : T1°C temperature & s1 stress.- Chapter 9: NLU parameters of creep exposed P91 : T1°C temperature & s1 stress.- Chapter 10: Ultrasonic parameters of creep exposed P91 : T1°C temperature & s1 stress supplements.