from the conferences organized by TANGER Ltd. provisional website
Thermo mechanical treated steel API 5LX65 has high mechanical characteristics and is intended for the welding of main pipelines for the oil and natural gas transportation.The pipes made of this steel have a diameter of 42 '' (1066.8mm) and a wall thickness of 31.75mm.They were welded by narrow gap MAG welding selecting a filler metal for the root layer and another filler metal for the filling layers. Testing of the plastic deformation behavior of the welded joints was done by cold bending tests on both specimens in which the longitudinal axis of the welded joint is perpendicular to the axis of the support rollers and parallel to the direction of application of the force as well as on the notched specimens. The results obtained were corroborated with macro - and micro fractographic investigations.Keywords: Thermomechanical treatment steel, welding, cold bending
© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.