Multi Objective Optimization of Pitting Corrosion Rate of Micro Plasma Arc Welded Titanium (Ti-6Al-4V) Alloy Sheets using TOPSIS
Journal Title: Journal of Advanced Research in Manufacturing, Material Science & Metallurgical Engineering - Year 2018, Vol 5, Issue 3
Abstract
Titanium is having good anti-corrosion properties in both basic and acidic medium. However, when it is subjected to severe heating processing like welding, there is a possibility of corrosion formation at the weld joint. In the present work pulsed current MPAW is used for joining 0.5 mm thick Titanium (Ti-6Al-4V) alloy sheets. Peak Current, Base Current, Pulse Rate and Pulse Width are considered as input parameters and fusion zone corrosion rate is considered as output response. Four factors and five levels are considered. Taguchi L25 orthogonal matrix is adopted and 25 experiments are performed. Linear Polarization method is adopted and corrosion rates are measured from Tafel plots for three different mediums namely 0.5N NaOH, 3.5N NaCl and 0.5N HCl. Empirical mathematical models are developed using statistical software (MINITAB). Analysis of Variance (ANOVA) is carried out at 95% confidence level. Effects of welding parameters on corrosion rate are studied. Multi objective optimization of corrosion rate for the three mediums was carried out using TOPSIS (Technique for Order Preference by Similarly to Ideal Solution)
Authors and Affiliations
M Sumalatha
Keywords
Related Articles
- EP ID EP535333
- DOI -
- Views 128
- Downloads 0
Nanomaterials based Electrodes for Electrochemical Sensor
Carbon nanoparticles and Zinc oxide material is a unique material for marking electrode for electrochemical sensing of heavy metal ions in the water. Carbon has unique properties. We proposed simple method for preparatio...
Multi Objective Optimization of Pitting Corrosion Rate of Micro Plasma Arc Welded Titanium (Ti-6Al-4V) Alloy Sheets using TOPSIS
Titanium is having good anti-corrosion properties in both basic and acidic medium. However, when it is subjected to severe heating processing like welding, there is a possibility of corrosion formation at the weld joint....
Experimental Study To Assess The Effect Of Electrode Material While Machining Inconel 718 Through Edm Process
Electrical discharge machining process is extensively used in tool and die making industry for processing of hardened materials with reasonable precision [1]. In the present work, comparison of MRR has been done using br...
Microstructure and Characterization of Ni-Cr Alloy-Spray Repaired Steel
In today’s era of manufacturing, wear upon the surface of component is the major problem of all materials. This wear can be reduced to great extent by applying some coating onto the surface of material. The as-sprayed co...
Thermal Characterization And Analysis of Aluminium-Silicon Carbide-Graphite Hybrid Metal Matrix Composites
Thermal characterization and analysis of composite materials have been gaining greater importance. Thermal an alysis of composites will be beneficial for comprehending the properties of materials as they change with temp...