The effect of carbon content and submerged arc welding process on hardness of carbon steels
Abstract
Like heat treatment processes, manufacturing methods that require heat input, such as welding process, can cause changes in material properties. This study aims to investigate the effect of carbon content and welding process on the hardness of welded carbon steels. For this purpose, samples of ultra-low carbon interstitial free, low carbon and medium carbon steels that have similar composition but different carbon content are used. All samples are heat treated to remove residual stresses remained during the manufacturing processes. Automated submerged arc technique is used to create a weld beam on plate despite a joining process. Rockwell B scale is used for hardness measurements. Results prove that steel carbon content and welding process have an effect on hardness around the weld beam.
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