Journal of Materials Physics and Chemistry
ISSN (Print): 2333-4436 ISSN (Online): 2333-4444 Website: http://www.sciepub.com/journal/jmpc Editor-in-chief: Dr. A. Heidari
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Journal of Materials Physics and Chemistry. 2013, 1(4), 65-68
DOI: 10.12691/jmpc-1-4-2
Open AccessArticle

Microstructural Transformations of Dissimilar Austenite-Ferrite Stainless Steels Welded Joints

Sara Aguilar1, , Ramón Tabares1 and Claudia Serna1

1Materials Engineering Department, University of Antioquia, Pyrometallurgical and Materials Research Group GIPIMME, Medellín, Colombia

Pub. Date: November 14, 2013

Cite this paper:
Sara Aguilar, Ramón Tabares and Claudia Serna. Microstructural Transformations of Dissimilar Austenite-Ferrite Stainless Steels Welded Joints. Journal of Materials Physics and Chemistry. 2013; 1(4):65-68. doi: 10.12691/jmpc-1-4-2

Abstract

This research studies the metallurgical transformations happening during the SMAW welding of AISI 316L austenitic stainless steel with AISI 430 ferritic stainless steel. Two different electrodes, AWS E309L austenitic and AWS E2209-16 duplex stainless steels 3.2 mm diameter, were used to perform the study. The joining was made with a single pass welding and keeping a low heat input ranging from 700 - 1000 J/mm. The influence of the type of electrode and the heat input on the microstructural evolution of the heat affected and the fusion zone was evaluated. Differences between δ ferrite morphology were found for both weld metals. The heat affected zone of the ferritic side showed grain coarsening and grain refinement with martensite at the grain boundaries. Tensile strength was similar for both welding conditions. Microhardness and δ ferrite percent were measured as well.

Keywords:
stainless steels welding SMAW welding metallurgy austenitic stainless steel ferritic stainless steel

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References:

[1]  Khan, M.M.A., Romolia, L., Fiaschib, M., Dinia, G. and Sarri F., “Laser beam welding of dissimilar stainless steels in a fillet joint configuration”, Journal of Materials Processing Technology, 28. 856-867. Nov. 2011.
 
[2]  Celik, A. and Alsaran, A., “Mechanical and Structural Properties of Similar and Dissimilar Steel Joints”, Materials Characterization, 43. 311-318. July 1999.
 
[3]  Lakshminarayanan, A.K., “Effect of Welding Processes on Tensile and Impact Properties, Hardness and Microstructure of AISI 409M Ferritic Stainless Joints Fabricated by Duplex Stainless Steel Filler Metal”, Journal of Iron and Steel Research, International, 16. 66-72. April 2009.
 
[4]  Rajaković-Ognjanović, V., “Corrosion of an austenite and ferrite stainless steel weld”, Journal of the Serbian Chemical Society, 76. 1027-1035. Dec. 2011.
 
[5]  Reddy, G. M., Rao, K. S. and Sekhar, T., “Microstructure and pitting corrosion of similar and dissimilar stainless steel welds” Science and Technology of Welding and Joining, 13 (4). 363-377. Jan. 2008.
 
[6]  Folkhard, E. Welding Metallurgy of Stainless Steels; Springer- Verlag Wien, New York, 1996.
 
[7]  Lippold, J. and Kotecki, D., Welding metallurgy and weldability of stainless steel, John Wiley and Sons, USA, 2005.
 
[8]  ASTM E8 - 13a Standard Test Methods for Tension Testing of Metallic Materials. ASTM International.
 
[9]  Kaçar, R., “Effect of solidification mode and morphology of microstructure on the hydrogen content of duplex stainless steel weld metal”, Materials and Design, 25. 1–9. Aug. 2003.
 
[10]  Easterling, K., Introduction to the physical metallurgy of welding, Butterworks Monographs in Materials, UK, 1983.
 
[11]  Granjon, H., Fundamentals of welding metallurgy, Woodhead Publishing Ltd, UK, 1991, 123-130.
 
[12]  Duarte, P., “Mechanical and Microstrutural Characterization of Weldments of Ferritic Stainless Steel AISI 444 Using Austenitic Stainless Steels Filler Metals”. Journal of ASTM International, 9 (2). 1-9. Jan. 2012.
 
[13]  Kaςar, R., “An investigation of microstructure/property relationships in dissimilar welds between martensitic and austenitic stainless steels” Materials and design, 25. 317-329. Oct. 2003.