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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/24231
Title: Simulated stress induced sensitization of HAZ in multipass weld of 304LN austenitic stainless steel
Authors: Barla N.A.
Ghosh P.K.
Kumar V.
Paraye N.K.
Anant R.
Das, Sourav
Published in: Journal of Manufacturing Processes
Abstract: Stress induced sensitization on heat affected zone (HAZ) of 304 LN austenitic stainless steel was studied using the thermo mechanical simulator (Gleeble 3800). The study was carried out using the weld thermal cycle and residual stresses, observed during pulse gas metal arc welding (P-GMAW) of 28 mm conventional groove weld. Layer wise study of weld seam deposition was done to understand the characteristic of stresses and thermal behavior on HAZ created by its adjacent weld seam during welding. The degree of sensitization, as a function of stress-type (tensile or compressive) and its magnitude under the thermal behavior of multi-pass heating and reheating in HAZ, has been studied through observations on changes in microstructure, electrochemical properties and variation in hardness of the matrix. It was observed that irrespective of its tensile or compressive nature, the increase in magnitude of residual stresses appreciably enhances the sensitization of the matrix by formation of Cr23C6 precipitate as confirmed by high-resolution transmission electron microscopy (HRTEM) analysis. Also the study includes widening of HAZ grain boundary as well as increase of degree of sensitization (electrochemical studies) and hardness. © 2021 The Society of Manufacturing Engineers
Citation: Journal of Manufacturing Processes, 62: 784-796
URI: https://doi.org/10.1016/j.jmapro.2020.12.061
http://repository.iitr.ac.in/handle/123456789/24231
Issue Date: 2021
Publisher: Elsevier Ltd
Keywords: Conventional groove weld
Electrochemical properties
Hardness
HRTEM
Sensitization
Stresses in HAZ
Thermo mechanical simulation of HAZ
ISSN: 15266125
Author Scopus IDs: 57201655300
35459954300
57203774517
57217676780
50461062400
9742316900
Author Affiliations: Barla, N.A., Indian Institute of Technology Roorkee, Roorkee, 247667, India
Ghosh, P.K., Siddharth Group of Engineering Institutes, Puttur, AP 517583, India
Kumar, V., Research and Development Centre for Iron and Steel, Ranchi, 834030, India
Paraye, N.K., Indian Institute of Technology Roorkee, Roorkee, 247667, India
Anant, R., Maulana Azad National Institute of Technology, Bhopal, 462003, India
Das, S., Indian Institute of Technology Roorkee, Roorkee, 247667, India
Corresponding Author: Ghosh, P.K.; Siddharth Group of Engineering InstitutesIndia; email: prakgfmtiitr@gmail.com
Appears in Collections:Journal Publications [MT]

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