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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/10755
Title: A brief study on δ-ferrite evolution in dissimilar P91 and P92 steel weld joint and their effect on mechanical properties
Authors: Pandey C.
Mahapatra M.M.
Kumar P.
Saini N.
Thakre J.G.
Vidyarthy R.S.
Narang H.K.
Published in: Archives of Civil and Mechanical Engineering
Abstract: Ferritic/martensitic 9Cr-1Mo-V-Nb steel also designated as ASTM A335 used in construction of several components of power plants operating in temperature range of 600–650 °C. In present investigation, dissimilar weld joint of P91 and P92 steel were prepared using the autogenous tungsten inert gas (A-TIG) welding and multi-pass gas tungsten arc welding (GTAW) process. A comparative study was performed on evolution of δ-ferrite patches in weld fusion zone and heat affected zones (HAZs) of welded joints. The evolution of δ-ferrite patches was studied in as-welded and post-weld heat treatment (PWHT) condition. PWHT was carried out at 760 °C for tempering time of 2 h and 6 h, for both A-TIG and GTA weld joints. It was observed that presence of higher content of ferrite stabilizer in P92 steel promote the formation of δ-ferrite patches in weld fusion zone as well as HAZs. To study the effect of welding process and PWHT, Charpy V impact energy and microhardness tests were performed. For microstructure characterization, field-emission scanning electron microscope (FESEM) and optical microscope were utilized. © 2017 Politechnika WrocÅ‚awska
Citation: Archives of Civil and Mechanical Engineering (2018), 18(3): 713-722
URI: https://doi.org/10.1016/j.acme.2017.12.002
http://repository.iitr.ac.in/handle/123456789/10755
Issue Date: 2018
Publisher: Elsevier B.V.
Keywords: A-TIG
Charpy toughness
GTAW
Hardness
δ-Ferrite
ISSN: 16449665
Author Scopus IDs: 56494528900
15044890300
55952759400
56559540200
57194558934
57188881635
55362146800
Author Affiliations: Pandey, C., Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeUttrakhand 247667, India
Mahapatra, M.M., School of Mechanical Sciences, Indian Institute of Technology, Bhubaneswar, Odisha 751013, India
Kumar, P., Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeUttrakhand 247667, India
Saini, N., Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeUttrakhand 247667, India
Thakre, J.G., Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeUttrakhand 247667, India
Vidyarthy, R.S., Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeUttrakhand 247667, India
Narang, H.K., Department of Mechanical Engineering, National Institute of Technology RaipurChhattisgarh 492010, India
Corresponding Author: Pandey, C.; Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeIndia; email: chandanpy.1989@gmail.com
Appears in Collections:Journal Publications [ME]

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