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 136
- Downloads 0
Physical properties of Nano based Bio-Oils as cutting fluids
The performance of any cutting fluid depends on its physical properties. A good cutting fluid should have high flash and fire point, so that it can withstand high temperature; resulted due to friction between tool-chip i...
‘Cast in India’-A Sequel of “Make in India”
Make in India, a core policy initiative, devised as on Sept. 2014 was initiated as a potent prescription to recharge the ailing manufacturing sector, which was further threatened with increasing capital imports and also...
Comparative Mechanical and Microstructure properties analysis of Friction Stir Welded and TIG Welded AA6061-T6 Similar joints
In this study, 6061-T6 aluminium alloy plates in 4mm thickness that are particularly used for aerospace and automotive industries were welded using Tungsten Inert Gas(TIG) welding and Friction Stir Welding(FSW) methods a...
Learning to Lean in a ‘Make in India’ Scenario
Make in India’ as a policy initiative is not only being watched by the world but is attracting good overseas support. There is a complementary opposition from local political groups, who await to see its debacle, though...
Experimental Investigations of Graphene Nanoparticle-Based Cutting Fluid during Turning of Titanium Alloy (Grade 5) with Minimum Quantity Lubrication
Nano Fluid Based Minimum quantity lubrication (NFBMQL) has proved to be a sustainable approach that can update minimum quantity lubrication (MQL) for the application of cutting fluid in the metal cutting operation. Addit...