Abstract
This work is devoted to investigating the effect of arc welding energy on microstructures and mechanical properties of steel 316L. This later is very useful in industrial, infrastructure transportation, containers shipping, and almost logistic applications. For that reason, five samples of welded steel 316L were carried out based on many parameters to reveal some properties (microstructure, mechanical, corrosion resistance, etc.). To reveal the anticorrosion efficiency. The epoxy/Alumina composite coating on welded steel 316L is tested in 1M HCl acidic media. This manipulation shows excellent corrosion resistance thanks to epoxy/Alumina coated. The choices of this coating are based on the environment, cost and safety. The used epoxy is only degrading with fire but not toxic. Also, it is not a costly method, and it is widely used and performed. Impedance studies on samples of welded steel 316L were conducted in 1M HCl media. The results showed that transfer resistance is increasing with the increase of welding energy. This result was assessed by potentiodynamic polarization measurements indicating a noticeable reduction of current densities with welding energy decrease. The scanning electron microscope (SEM) micrograph was undertaken in order to check how far the studied samples are protected by the used coating in such aggressive media.
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