The Influence of SMAW Welding Current Variation on Tensile Strength, Corrosion Rate, and Microstructure of ST 42 Steel for Inner Bottom Plate Material in Ships
نویسندگان
چکیده
Steel is currently widely used in the industrial world. Due to its versatile uses, development of steel science has also broadened, leading improved processing methods. Welding a process joining two pieces metal using heat. Steel, containing carbon, prone oxidation and rust. The aim this study determine influence welding current variations on tensile strength, corrosion rate, micrographic structure ST 42 steel. research method employed experimental. are 70 A, 85 100 115 130 A. In study, highest average stress was found at measuring 519.20 MPa. For strain, values 7% were observed A modulus elasticity obtained with value 102.18 GPa. rate occurred specimens 0.19 mm/year (good), lowest 0.10 (excellent). testing results showed decrease ferrite phase each increase current, while pearlite increased. It can be concluded that best for due high strength low rate.
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ژورنال
عنوان ژورنال: International journal of marine engineering innovation and research
سال: 2023
ISSN: ['2541-5972', '2548-1479']
DOI: https://doi.org/10.12962/j25481479.v8i2.16900