2022
DOI: 10.3390/ma16010304
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Influence of Long-Term Subcritical Annealing on the Unalloyed Steel Welded Joint Microstructure

Abstract: The article presents changes in the microstructure of hot-rolled unalloyed structural steel after the arc welding process and in the state after long-term exposure to 600 °C during operation. These studies enable a clear assessment of the effects of long-term exposure to elevated temperature relative to the as-welded condition, which has not been reported. The microstructure examination was carried out on welded joints in eight different zones of the joint. Studies have shown that the welding thermal cycle cau… Show more

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Cited by 2 publications
(2 citation statements)
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“…Finally, the fusion zone is similar to a typical fusion zone as seen in many welded steels [15], as it is formed of elongated ferritic grains as indicated by the yellow circle and Widmanstätten ferrite (αw). As mentionned by Fajt et al [16] the microstructure in fusion zone which has been heated above the liquidus temperature is characterized by a typical casting structure.…”
Section: Microstructurementioning
confidence: 93%
“…Finally, the fusion zone is similar to a typical fusion zone as seen in many welded steels [15], as it is formed of elongated ferritic grains as indicated by the yellow circle and Widmanstätten ferrite (αw). As mentionned by Fajt et al [16] the microstructure in fusion zone which has been heated above the liquidus temperature is characterized by a typical casting structure.…”
Section: Microstructurementioning
confidence: 93%
“…These issues are particularly important during welding of metals of limited weldability, especially in extreme conditions: arctic, field (e.g. during the fabrication of transmission pipelines) and under water [5][6][7][8][9]. Welding under water can be carried out using the dry method, local dry cavity or with direct contact of the welding area with water [10][11][12].…”
Section: Introductionmentioning
confidence: 99%