Abstracts Book - IMRC 2018

• SE4-O014
EVALUATION OF CORROSION BEHAVIOR IN FUNCTION OF
PROCESS PARAMETERS IN FRICTION-STIR WELDED JOINTS OF
ALUMINUM ALLOY AA5052-H32
Jimy Unfried 1 , Roosvel Soto 2 , Ramiro Chamorro 3 , Maria Mercedes Cely 2 , Anderson Sandoval 4
1 Universidad de Córdoba, Mechanical Engineering Department, Colombia. 2 Universidad
Autónoma del Caribe, Mechanical engineering, Colombia. 3 Universidade Estadual de
Campinas, Departamento de eletronica, Brazil. 4 Universidad Industrial de Santander, Grupo de
Investigaciones en Corrosión, Colombia.
In this work was studied the influence of process parameters on corrosion
behavior of friction-stir welded joints of aluminum alloy AA5052-H32. Evaluated
process parameters were rotational and welding speeds, which were selected
an adequate process window. The corrosion behavior was evaluated using an
electrochemical impedance test and potentiodynamic techniques applied in stir
region of each parameters combination set. Experimental evaluations were
complemented with microstructure and hardness measurements. Results
showed that increasing process parameters carried out an increasing of heat
input and stirring conditions, which it was correlated with an increase of
dynamical recrystallization state, improving corrosion behavior of stir region.
Acknowledgment:
The authors are very grateful with Universidad Autonoma del Caribe by financial
support and Universidad Industrial del Santander by insightful help with
corrosion tests.
Keywords: Friction-stir welding, EIS test, Potentiodynamic techniques
Presenting authors email: jimyunfried@correo.unicordoba.edu.co