Investigation of Impact Toughness and Mechanical Properties of the Plain Carbon Steel Weld Metal Fabricated By SMAW with Cellulose and Rutile Coated Electrodes

Subject Areas :

Navid Shojaei ¹ , Hamed Sabet ² , Banafsheh Karbakhsh Ravari ³

1 - Materials and Metallurgy Engineering(Welding).Karaj Branch. Islamic Azad University.Karaj.Iran
2 - Associate Professor, Department of Materials Engineering, Islamic Azad University, Karaj, Iran.
3 - Department of Materials Engineering.Karaj Branch.Islamic Azad University.Karaj.Iran.

Received: 2023-12-19 Accepted : 2024-02-24 Published : 2025-01-01

Keywords: Lead Composite Polyaniline Orange Peel Adsorption.,

Abstract :

In the current research, ST37 Steel was Joined with E6010 and E6013 Electrodes by SMAW. After samples preparation, the evolution of Microstructure was carried out by OM and SEM in addition  the  Impact, Tensile, Bending and Microhardness tests were performed. The results shows that by decreasing time and increasing Cooling Rate, the Microstructure of Weld Metal that Welded with E6013 Electrode from Widmannstatten and Fine Ferrite has changed to Acicular and Fine Coaxial ferrite with lower average Grain size of Weld Metal using E6010 Electrode. Also, Welded sample with E60l0 Electrode shows smaller mean diameter and volume fraction of Inclusions (2.3%) compared to Weld Metal using E6013 Electrode (3.6%). Additionally, Impact Energy of specimen E6010 After the Welding process was changed from 87 to 25.5J with changing Temperature from 25 to -30℃ meanwhile, Impact Energy of sample that welded with E6013 was changed from 61 to 17.5J. Also, Impact Energy of specimen E6010 After 562 days of the Welding process was changed from 83 to 18.5J with changing Temperature from 25 to -30℃ meanwhile, Impact Energy of sample that Welded with E6013 was changed from 51 to 8J. The results of Tensile test shows that both samples that Welded with E6010 and E6013 Electrodes have same Yield Strength and Ultimate Tensile Strength in Weld Zone. The result of Bending test shows that both samples have equal Ductility and Flexibility. The results of Microhardness test shows that the average of Hardness for both samples is same and the quantity of Hardness are 148 and 150 HV for Welded sample with E6010 and E6013 Electrodes, respectively. 

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