INFLUENCE OF THE FILLER METAL IN WELDED POINTS OF DUPLEX STAINLESS STEELS

Edmundo Roldan C., Juan Hernandez A., Eleazar Salinas R., Eduardo Cerecedo S., Ventura Rodriguez L.

Abstract


The aim of this work was to study the effect of welding with ER2209 filler metal and its effectiveness, to be used in “Butt” and “T” unions in a UR2202 stainless steel with a thickness of 8 mm, and in a 201LN2B stainless steel with a thickness of 5 mm, using the welding process of Gas Metal Arc Welding (GMAW), with a 97% Argon – 2.5 % CO2 gas protection by means of a pulsed arc transfer. Hardness of this material shows a decreasing going from 21.2 to 30.8 Rockwell G in the “T” samples and from 27.1 to 37.2 Rockwell G for “Butt” samples, whereby the distortion caused by the welding process is minimal. In the same way, these welds showed micro structures with perlite and ferrite phases in welding cords. Mechanical properties due to hardness tests also were determined.

Full Text:

PDF


DOI: http://dx.doi.org/10.19044/esj.2014.v10n18p%25p


European Scientific Journal (ESJ)

 

ISSN: 1857 - 7881 (Print)
ISSN: 1857 - 7431 (Online)

 

Contact: contact@eujournal.org

To make sure that you can receive messages from us, please add the 'eujournal.org' domain to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', check your 'bulk mail' or 'junk mail' folders.




Publisher: European Scientific Institute, ESI.
ESI cooperates with Universities and Academic Centres on 5 continents.