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MICROSTRUCTURE OF THE PULSED MIG / MAG WELDED JOINTS FROM DUPLEX STAINLESS STEEL X2CRNIMON 22-5-3

1 URLAN Sorin Dumitru
Co-authors:
1 MITELEA Ion 1 UŢU Ion-Dragoş 1 BURCĂ Mircea
Institution:
1 University Politehnica Timisoara, Timisoara, Romania, EU sorinurlan@yahoo.com, ion.mitelea@upt.ro, dragos.utu@upt.ro, mircea.burca@upt.ro
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
898-903
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
385 views / 159 downloads
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Abstract

The paper analyses the structural modifications occurred in the welded joints from a Duplex stainless steel, delivered in solution annealed state in form of sheet with 12 mm thickness. As filler material it has been selected an electrode wire E 2209-16 with a diameter of 1.2 mm, which has a higher Ni content (8-10 %) compared to the base material (4.5-6.5 %) in order to promote the formation of austenite and to induce in the weld approximately equal proportions of ferrite and austenite.Also are capitalized the benefits of the pulsed current arc-welding regarding the precipitation reactions limitation of the intermetallic phase σ and of the nitrides in weld and heat affected zone (HAZ) which can affect both corrosion resistance and toughness.

Keywords: Duplex stainless steel, welding, microstructure

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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