Effect of Cathodic Hydrogen Charging on Mechanical Properties of AISI 304 Austenitic Stainless Steel Welds

Rasdi Deraman; M.N. Berhan

doi:10.4028/www.scientific.net/AMM.660.199

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 660Effect of Cathodic Hydrogen Charging on Mechanical...

Effect of Cathodic Hydrogen Charging on Mechanical Properties of AISI 304 Austenitic Stainless Steel Welds

Abstract:

A welding coupon of AISI 304 austenitic stainless steel with thickness of 5 mm was welded by Gas Metal Arc Welding (GMAW) process using different welding parameters. The rectangular tensile test specimens (ASTM E8 standard) were subjected to cathodic hydrogen charging by immersed in 0.3 M sulfuric acid (H₂SO₄) solution and charged with current density rate of 110 mA per cm² for 12 hours. The effect of cathodic hydrogen charging on the microstructural properties and fracture behavior in welding joints have been examined using an optical microscopy and scanning electron microscopy (SEM). The results showed that the percentage decay of UTS and elongation in welding coupons were reduced because of hydrogen charged. The fractured surfaces in weld joints zone appeared a formation of globular oxides.

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Periodical:

Applied Mechanics and Materials (Volume 660)

Pages:

199-203

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.660.199

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Online since:

October 2014

Authors:

Rasdi Deraman*, M.N. Berhan

Keywords:

Austenitic Stainless Steel, Cathodic Hydrogen Charging, GMAW, Mechanical, Microstructral Properties

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