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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13004
Title: Simulated Stress-Induced Sensitization Study for the Heat-Affected Zone of the 304LN Stainless Steel Weld Using a Thermomechanical Simulator
Authors: Barla N.A.
Ghosh P.K.
Das, Sourav
Kumar V.
Published in: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Abstract: Stress-induced sensitization in the heat-affected zone (HAZ) of the 304LN austenitic stainless steel weld at 923 K (650 °C) was evaluated using a thermomechanical simulator (Gleeble 3800) at different stress levels. The simulated sensitization behavior of the HAZ was studied in close approximation of the stress and weld thermal cycle that is generally observed during pulse current gas metal arc welding of the 25-mm-thick section of the 304LN steel. The response to the degree of sensitization, as a function of the type and magnitude of stresses present in the matrix, was established through observations on changes in microstructure, electrochemical properties and hardness measurements. Transmission electron microscopy and selected area diffraction confirm that sensitization occurred and Cr 23 C 6 precipitates formed at grain boundaries. The results indicate that the presence of tensile or compressive stresses, especially above the yield stress of the steel, enhances sensitization. © 2019, The Minerals, Metals & Materials Society and ASM International.
Citation: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science (2019), 50(3): 1283-1293
URI: https://doi.org/10.1007/s11661-018-5082-5
http://repository.iitr.ac.in/handle/123456789/13004
Issue Date: 2019
Publisher: Springer Boston
ISSN: 10735623
Author Scopus IDs: 57201655300
35459954300
9742316900
57203774517
Author Affiliations: Barla, N.A., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Ghosh, P.K., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Das, S., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Kumar, V., R & D Centre for Iron & Steel, Steel Authority of India Ltd., Ranchi, 834002, India
Corresponding Author: Ghosh, P.K.; Department of Metallurgical and Materials Engineering, Indian Institute of Technology RoorkeeIndia; email: prakgfmtiitr@gmail.com
Appears in Collections:Journal Publications [MT]

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