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Published in: Metals and Materials International 5/2019

13-05-2019

Electron Back Scattered Diffraction Study of Dissimilar Welding Between the Super Duplex Stainless Steel and the Ni-Based Superalloy

Authors: Jalal Kangazian, Morteza Shamanian

Published in: Metals and Materials International | Issue 5/2019

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Abstract

This research investigated the microtexture and boundaries characteristics of the Incoloy 825 Ni-based superalloy/UNS S32750 super duplex stainless steel (SDSS) dissimilar welds using electron back scattered diffraction analysis. The results indicated that the weld metal was textured; thus, {293}<311> and {348}<583> texture components were observed. As a result of the grain growth and the changes in the morphologies of the phases in the heat affected zones (HAZs), the primary texture components of the alloys were replaced by the new components. In addition, the maximum texture intensities of the generated components in the HAZs were higher than those of the related base metals. The grain growth as well as the changes in the phase morphologies also resulted in a decrease in the proportion of coincident site lattice (CSL) boundaries in the HAZs, in comparison with the base metals. Absence of CSL boundaries in the weld metal was observed too.

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Metadata
Title
Electron Back Scattered Diffraction Study of Dissimilar Welding Between the Super Duplex Stainless Steel and the Ni-Based Superalloy
Authors
Jalal Kangazian
Morteza Shamanian
Publication date
13-05-2019
Publisher
The Korean Institute of Metals and Materials
Published in
Metals and Materials International / Issue 5/2019
Print ISSN: 1598-9623
Electronic ISSN: 2005-4149
DOI
https://doi.org/10.1007/s12540-019-00289-0

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