caa a22 4500 463229193 CHVBK 20180405153236.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s10853-006-0704-5 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0704-5 Identification of microstructural zones and thermal cycles in a weldment of modified 9Cr-1Mo steel [Elektronische Daten] [V. Paul, S. Saroja, P. Hariharan, A. Rajadurai, M. Vijayalakshmi] This paper presents the results of a study on the microstructural and microchemical variations in a multipass Gas Tungsten Arc weld (GTAW) of modified 9Cr-1Mo steel. The changes brought about in the steel due to the heating and cooling cycles during welding and the subsequent effects due to reheating effects during multipass welding are described. Detailed analytical transmission electron microscopy has been carried to study the type and composition of the primary and secondary phases in this steel. The systematic changes in microstructural parameters such as Prior Austenite Grain Size, martensite lath size, number density, size and microchemistry of carbides, have been understood based on the different transformations that the steel undergoes during the heating and cooling process. Based on the observed microstructure, an attempt has been made to identify distinct microstructural zones and possible thermal cycles experienced by different regions of the weldment. Springer Science+Business Media, LLC, 2007 Paul V. Physical Metallurgy Section, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, 603 102, Kalpakkam, India aut Saroja S. Physical Metallurgy Section, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, 603 102, Kalpakkam, India aut Hariharan P. Department of Manufacturing Engineering, Anna University, 600 025, Chennai, India aut Rajadurai A. Department of Production Engineering, Madras Institute of Technology, 600 044, Chennai, India aut Vijayalakshmi M. Physical Metallurgy Section, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, 603 102, Kalpakkam, India aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/14(2007-07-01), 5700-5713 0022-2461 42:14<5700 2007 42 10853 https://doi.org/10.1007/s10853-006-0704-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0704-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Paul V. Physical Metallurgy Section, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, 603 102, Kalpakkam, India aut NATIONALLICENCE 700 1- Saroja S. Physical Metallurgy Section, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, 603 102, Kalpakkam, India aut NATIONALLICENCE 700 1- Hariharan P. Department of Manufacturing Engineering, Anna University, 600 025, Chennai, India aut NATIONALLICENCE 700 1- Rajadurai A. Department of Production Engineering, Madras Institute of Technology, 600 044, Chennai, India aut NATIONALLICENCE 700 1- Vijayalakshmi M. Physical Metallurgy Section, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, 603 102, Kalpakkam, India aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/14(2007-07-01), 5700-5713 0022-2461 42:14<5700 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer