Characterisation of microstructure and corrosion behaviour of thin section AISI 430 stainless steel gas tungsten arc weldment

Research on the effect of ion implantation on the corrosion behaviour of metals has been carried out for years, but some difficulties arise in the comparison of the obtained results due to variations in experimental conditions (alloys, surface preparation, doses, experimental techniques...). This work tries to overcome those differences, presenting the effect of several elements (Ce+, N+, Cr+ and Cr+ N+) implanted in similar conditions on the pitting corrosion resistance of AISI 430 stainless steel. Potentiodynamic measurements in 1M NaCl demonstrate the beneficial effect of all the implanted elements, showing that Ce+ is the less efficient ion, while Cr+ N+ co-implantation gives the best results in terms of localized attack resistance. Pitting morphology is explained in terms of the XPS and GIXRD data that allow chemical and structural characterization of the implanted layer. Those results help to enlighten the protection mechanisms involved in the considered implantations.

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Effect of copper and aluminium addition on mechanical properties and corrosion behaviour of AISI 430 ferritic stainless steel gas tungsten arc welds

Journal of Materials Research and Technology ◽

10.1016/j.jmrt.2013.02.009 ◽

2013 ◽

Vol 2 (3) ◽

pp. 238-249 ◽

Cited By ~ 16

Author(s):

Mallaiah Gurram ◽

Kumar Adepu ◽

Ravinder Reddy Pinninti ◽

Madhusudhan Reddy Gankidi

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Ferritic Stainless Steel ◽

Corrosion Behaviour ◽

Gas Tungsten Arc ◽

Aluminium Addition ◽

Gas Tungsten Arc Welds ◽

Mechanical Properties And Corrosion ◽

Effect Of Copper ◽

Aisi 430

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Experimental Investigation of Parameters and its Effect on IGC Attack in Ferritic Stainless Steel 430 Weldments

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.854.10 ◽

2016 ◽

Vol 854 ◽

pp. 10-17 ◽

Cited By ~ 1

Author(s):

G. Rajamurugan ◽

P. Mahendiran

Keyword(s):

Stainless Steel ◽

Automotive Industry ◽

Intergranular Corrosion ◽

Oil And Gas ◽

Corrosion Damage ◽

Gas Tungsten Arc ◽

Corrosion Studies ◽

430 Stainless Steel ◽

Corrosion Problem ◽

Aisi 430

Corrosion is a natural occurring phenomenon which exists as a part of our everyday life. Generally stainless steel is having good corrosion resistance which undergo some specific type of corrosion. Corrosion problem in stainless steel has a huge economic and environmental impact on virtually all facts of world’s infrastructure, from highways, bridges, and buildings to oil and gas, chemical processing, and finally it play an ever increasing role in the largest industry in the world is food industry and automotive industry. The corrosion problem is quite costly and it has no easy solution so large amount of money is utilized to analyse the corrosion damage and also to replace the corroded components. The focus of this paper is to investigate the intergranular corrosion studies of industrially important stainless steel of AISI 430 by two different corrosive solutions were 40% Nitric acid (ASTM-A262-Practice C) and copper – copper sulphate 50% Sulphuric acid (ASTM-A262-Practice E) of Gas tungsten Arc welded Metal which were weighted and immersed in test solutions. After immersion, these weldments were removed, washed, and then weighted to determine the weight loss. The analysis of experimental data obtained on intergranular corrosion and the micrographs by Scanning Electron microscope were carefully analysed, monitored, and revealed to study the behaviour of intergranular corrosion of AISI 430, Stainless steel weldments.

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