Microstructural development of dissimilar weldments: case of MIG welding of Cu with Fe filler

Kumar, Suresh K and Phanikumar, G and Dutta, P and Chattopadhyay, K (2002) Microstructural development of dissimilar weldments: case of MIG welding of Cu with Fe filler. In: Journal of Materials Science, 37 (11). pp. 2345-2349.

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Abstract

Microstructure development during MIG welding of copper with iron filler has been studied to gain insight to the process of dissimilar welding. The microstructure of the iron rich bids consist of martensitic bcc iron with cellular network of fcc copper. The scale of network depends on the processing conditions. However, the average composition remains fairly uniform with 20 at% Cu excepting at the boundary regions of the bid and the copper plates. A characteristic banded structure could be observed in these regions whose width scales with traverse speed. Evidence of phase separated copper globule suggests access to the submerged miscibility gap and significant undercooling of the melt during welding.

Item Type:	Journal Article
Publication:	Journal of Materials Science
Publisher:	Springer
Additional Information:	Copyright of this article belongs to Springer Netherlands.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	02 Jun 2006
Last Modified:	19 Sep 2010 04:28
URI:	http://eprints.iisc.ac.in/id/eprint/7356

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