<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The paper deals with evaluation the corrosion characteristics of welded joints in two corrosion environments – SARS and 0.1 M NaCl solution. Welds were made by MAG technology using three protective gas mixtures - Ferroline He20C8, Ferroline C18 and Ferroline C6X1. There were realised chemical analysis of the base material and weld metal of all welded joints, Vickers hardness test of the base material, heat affected zones and weld metals, metallographic analysis of all areas of welds and measurement of base and weld metal corrosion rate in two corrosion environments. Hardness increases from the base material through the HAZ to the weld metal. The maximum difference between the hardness of the weld metal and the base material is 36 HV 0.1 - realised welds do not show a notch effect. The corrosion rate of the materials in SARS solution was higher than in the NaCl solution. The corrosion rate in weld metals of all welded joints was lower than the corrosion rate of the base material. The lowest corrosion rate in both corrosive environments showed a weld metal made using shielding gas Ferroline C18.</p></abstract>

The paper deals with evaluation the corrosion characteristics of welded joints in two corrosion environments – SARS and 0.1 M NaCl solution. Welds were made by MAG technology using three protective gas mixtures - Ferroline He20C8, Ferroline C18 and Ferroline C6X1. There were realised chemical analysis of the base material and weld metal of all welded joints, Vickers hardness test of the base material, heat affected zones and weld metals, metallographic analysis of all areas of welds and measurement of base and weld metal corrosion rate in two corrosion environments. Hardness increases from the base material through the HAZ to the weld metal. The maximum difference between the hardness of the weld metal and the base material is 36 HV 0.1 - realised welds do not show a notch effect. The corrosion rate of the materials in SARS solution was higher than in the NaCl solution. The corrosion rate in weld metals of all welded joints was lower than the corrosion rate of the base material. The lowest corrosion rate in both corrosive environments showed a weld metal made using shielding gas Ferroline C18.

Determination corrosion rate of welded joints realised by MAG technology

Technická univerzita v Košiciach, Strojnícka fakulta, Katedra strojárskych technológií a materiálov

KOM – Corrosion and Material Protection Journal

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Determination corrosion rate of welded joints realised by MAG technology"}

The paper deals with evaluation the corrosion characteristics of welded joints in two corrosion environments – SARS and 0.1 M NaCl solution. Welds were made by...

Determination corrosion rate of welded joints realised by MAG technology

Publicado en línea: 23 feb 2017

Páginas: 19 - 24

DOI: https://doi.org/10.1515/kom-2017-0002

© 2017 Guzanová A. et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.