Mohamad Arshad, Nornabihah (2016) An Investigation Of Corrosion Of Dual Phase Steel Welded Plate In 5% Concentration Of Sodium Chloride. Project Report. UTeM, Melaka, Malaysia. (Submitted)
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An Investigation Of Corrosion Of Dual Phase Steel Welded Plate In 5% Concentration Of Sodium Chloride.pdf - Submitted Version Download (960kB) |
Abstract
Protection against corrosion is a major industrial problem that has been studied with numerous inquiries. Because of that, dual phase steel has been used as an alternative to low carbon steel. Dual phase steel is high quality steel that can be developed from low carbon steel by heat treatment. Therefore, the aim of this project is to investigate the corrosion of welded dual phase steel with different percentage of martensite in 5% concentration of sodium chloride to look at the effect of microstructural changes that occurs during heat treatment and its relationship with dual phase susceptibility to corrosion. Dual phase steel was successfully developed from low carbon steel by heat treatment at 800°C and 850°C and joint by the process of shielded metal arc welding (SMAW). The specimen were exposed to NaCl for 7, 14, 21 and 28 days. The discontinuities on welded and non-welded dual phase steel and the microstructure of the specimens were inspected before and after corrosion test using Optical Microscope (OM) and Confocal Microscope (CM) while severe corrosion were inspected using scanning electron microscope (SEM) and energy dispersive x-ray spectroscopy (EDS). The results show that with longer exposure time, the corrosion rate, weight loss and hardness loss of the specimens increase. Weight loss method was used to determine the corrosion rate. Generally, welded specimens loss most of its weight whereas the non-welded specimen loss most of its hardness. The corrosion rate for welded specimens is higher than non-welded specimens.
| Item Type: | Final Year Project (Project Report) |
|---|---|
| Uncontrolled Keywords: | Steel - Corrosion - Testing, Steel - Heat treatment |
| Subjects: | T Technology > T Technology (General) T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Library > Final Year Project > FKM |
| Depositing User: | Mohd Hannif Jamaludin |
| Date Deposited: | 19 Feb 2018 03:00 |
| Last Modified: | 19 Feb 2018 03:00 |
| URI: | http://digitalcollection.utem.edu.my/id/eprint/20447 |
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