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Title: Joining of Inconel-625 alloy through microwave hybrid heating and its characterization
Authors: Badiger, R.I.
Narendranath, S.
Srinath, M.S.
Issue Date: 2015
Citation: Journal of Manufacturing Processes, 2015, Vol.18, , pp.117-123
Abstract: Joining of bulk metals using microwave energy is being explored as a new processing method in the era of high technology applications. The present work investigates the results of on-going project in which joining of Inconel-625 alloy has been effectively carried out through microwave hybrid heating. Characterization of the microwave developed joints is done through SEM, XRD, UTM and Vicker's microhardness tester. The microstructural analysis through scanning electron microscope exhibits a fully fused weld interface free from interfacial cracks. XRD study reveals the formation of carbides of Ni, Cr and Mo in the joint interface. The average Vicker's microhardness in the joint region observed was 360 20 Hv. Assessment of tensile strength shows an ultimate tensile strength of 328 MPa with 9.04% elongation. Further the fractured joints are subjected to fractography study which possibly reveals a mixed mode fracture. 2015 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved.
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