Investigation of Effects of Mig Welding on Corrosion Behaviour of AISI 1010 Carbon Steel
This paper presents the corrosion behaviour of welded low carbon steel at different welding voltages and filler materials. The welding process was conducted on butt joint 
specimens using the metal inert gas (MIG) technique at a welding voltage range of 19 to 21 V with 1 V interval, and the filler materials used were ER 308L and ER 70S-6 with 
1.2 mm diameter. Heat treatment through full annealing was done to the welded low carbon steel, and the corrosion behaviour was tested using a synthetic seawater 
environment with 3.5 wt% NaCl. Microstructure changes were observed using a scanning electron microscope (SEM). The results showed that the corrosion rate decreased when the welding voltage increased, as it directly affected the welding heat input. The welding heat input was found to have a significant effect on the corrosion rate as it changed the ferrite content in the microstructure of the specimens. Decrease in the corrosion rate was also found when the full annealing process was done to the 
specimens and ER 308L filler material was used. From a metallographic study, iron oxides and pitting were found on the surface of the exposed area after the corrosion test. 
It is apparent that the combination of higher welding voltage, heat treatment and the use of ER 308L filler material can reduce the corrosion rate of AISI 1010 carbon steel.
Experimental Investigations On Corrosion Model Of Welded 6061 Aluminum Exposed In NaCl Solution
Interpreting both each segmented region and multi-reactions for self-corrosion is important when investigating the corrosion rate in a welded structure. This research 
studied weld corrosion occurring on aluminum 6061 that can be considered from the electrical circuit concept. The research studied the corrosion process on two types of 
filler which were 4043 and 4047 filler. The electrical circuit model and corrosion test revealed that the heat affected zone (HAZ) region behaved as an anode and showed a 
higher corrosion rate for both types of filler. Samples using filler 4043 had a higher corrosion rate than filler 4047. Under an optical microscope, filler 4043 was seen to 
display inhomogeneous microstructures which relate to the corrosion process. Using the electrical model, study of the galvanic effects on each part of the weld regions showed 
realistic correlations to simulate the corrosion process in welded samples.
The atmospheric corrosion kinetics of low carbon steel in a tropical marine environment
The atmospheric corrosion kinetics of low carbon steel exposed for up to 36 months in marine and industrial sites was studied by weight loss measurements. The results show that the mechanism and kinetics of the atmospheric corrosion process presents transition behaviour in marine environments with high chloride ion content and high relative humidity, whereas no transition appears in industrial environment. The average corrosion velocity in marine site reaches a maximum during the period of transition and then fluctuates in a certain range; however, the instantaneous corrosion velocity follows different exponential functions before and after the period of transition.