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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/12036
Title: On microstructure and strength properties of microwave welded Inconel 718/ stainless steel (SS-316L)
Authors: Bansal A.
Sharma, Apurbba Kumar
Das S.
Kumar, Pradeep
Published in: Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
Abstract: Microstructure and mechanical properties of microwave welded Inconel 718/ austenitic stainless steel (SS-316L) were investigated in this work. Principles of microwave hybrid heating were effectively applied for joining of Inconel 718/SS-316L using Inconel 718 powder as an interfacing layer between the candidate surfaces. Experiments were carried out in a thermally insulating box placed inside an industrial microwave applicator for a duration of 600 s. The microwave-induced dissimilar welds were characterized using X-ray diffraction, field emission scanning electron microscope, microhardness tester, and universal testing machine. The X-ray diffraction study of the fusion zone showed the presence of various carbides and intermetallics. Microstructural study revealed metallurgical bonding between the two faying surfaces with no sign of interfacial cracking. The elemental analysis of the welded zone confirms dilution of Inconel 718 powder across the joint interface during microwave hybrid heating. The average microhardness on the joint interface was observed to be 230 ± 5 HV; the average porosity was monitored to be 0.94%. The average ultimate tensile strength of the microwave welds was monitored as 517.5 MPa with 18.18% elongation. The fractography study reveals a mixed mode of failure of the joints during tensile testing. © 2015 Institution of Mechanical Engineers.
Citation: Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications (2016), 230(5): 939-948
URI: https://doi.org/10.1177/1464420715589206
http://repository.iitr.ac.in/handle/123456789/12036
Issue Date: 2016
Publisher: SAGE Publications Ltd
Keywords: hybrid heating
joint failure
Laves phase
microstructure
Microwave weld
tensile strength
ISSN: 14644207
Author Scopus IDs: 36144920800
55434064300
56298971800
55952759400
Author Affiliations: Bansal, A., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Sharma, A.K., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Das, S., Reactor Control Division, BARC, Mumbai, India
Kumar, P., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Corresponding Author: Bansal, A.; Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeIndia; email: amit.bansal978@gmail.com
Appears in Collections:Journal Publications [ME]

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