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Vol. 44 No. 1 (2019)
Original articles

Microstructural Analysis of Inconel 625 Nickel Alloy / UNS S31803 Duplex Stainless-Steel Dissimilar Weldments

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  • Tuba Karahan,
  • Tolga Mert,
  • Mustafa Tümer,
  • Zaim Mithat Kerimak
Tuba Karahan
İstanbul Gedik University, 34876 Kartal/İstanbul, Turkey
Tolga Mert
Yıldız Technical University, 34349 Beşiktaş/İstanbul, Turkey
Mustafa Tümer
Kocaeli University, 41180 Kartepe / Kocaeli, Turkey
Zaim Mithat Kerimak
Anadolu Casting Co, 51780 Körfez / Kocaeli, Turkey
DOI: https://doi.org/10.24867/ATM-2019-1-003

Published 2023-09-30

abstract views: 40 // Full text article (PDF): 28


Keywords

  • Inconel,
  • duplex stainless steel,
  • toughness,
  • hardness,
  • microstructure

How to Cite

[1]
T. Karahan, T. Mert, M. Tümer, and Z. M. Kerimak, “Microstructural Analysis of Inconel 625 Nickel Alloy / UNS S31803 Duplex Stainless-Steel Dissimilar Weldments”, Adv Techn Mat, vol. 44, no. 1, pp. 15–19, Sep. 2023.
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This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

In this study, Inconel 625 nickel alloy and UNS 31803 duplex stainless steel (DSS) dissimilar pairs were welded with MIG welding process. Weld metal, obtained with ERNiCrMo-3 filler wire, was subjected to mechanical and microstructural investigations. Notch impact test and micro hardness measurements were realized on weld metal in order to evaluate31803 mechanical properties. Microstructural changes in fusion line of the base metals were examined using optical and electron microscopes. Phase precipitations rich of Ti and Mo elements were detected among dendritic austenite arms in the weld metal. It was observed that ERNiCrMo-3 filler metal had sufficient toughness because of high nickel content.

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