Correlation of Magnetic Properties and Ductile-to-Brittle Transition Temperature in Pipelines

Abstract:

Drop-weight tear tests were conducted on high toughness pipeline steel, in order to analyze by fractography study the fracture appearance, occurring in the region impacted by a hammer. Measurements of hysteresis loops, in a range of very low temperatures (-20°C to-60°C), have been performed on samples in order to correlate its magnetic properties with the percentage reduction of the ductile area and the range of ductile to brittle transition temperature. According to the results, magnetic permeability depends on critical transition temperature.

• Periodical: Key Engineering Materials (Volume 605)
• Pages: 649-652
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.605.649
• Online since: April 2014
• Authors: Garifalia Kotoula
• Keywords: Drop-Weight Tear Test, Ductile to Brittle Transition Temperature, Hysteresis Loop, Magnetic Permeability, Pipeline

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