Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5452709 | Procedia Structural Integrity | 2017 | 11 Pages |
Abstract
The dependence of the mechanical properties respect to the microstructural orientation of a low carbon steel API-5L grade X46 pipe was assessed by Charpy impact and tensile strength tests, through the use of samples oriented in the longitudinal (L) and circumferential (C) directions. Also, a thorough microstructural and EBSD analysis were made. The steel presented anisotropic mechanical behavior, associated with the material forming process. The specimens oriented in the L direction, which is parallel to the microstructural banding, had a lower fracture resistance (KIC-CV) and tensile properties (YS) than the C oriented specimens. According to obtained results, it is concluded that the influence of microstructural banding and crystallographic texture varies the fracture toughness of a material at least 10% between the L and the C directions. Hence, the anisotropy coefficient “rrv” was introduced to correlate quantitatively the microstructural properties to the anisotropic behavior of the API-5L X46 steel. The fracture resistance and tensile strength are mainly influenced by crystallographic texture, while the tensile ductility is associated to the microstructural banding.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Chemistry
Authors
M.A. Beltrán, J.L. González, D. Rivas, F. Hernández, H. Dorantes,