Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/112113
Title: Tensile Deformation and Fracture Behavior of API-5L X70 Line Pipe Steel
Authors: Lobanov, M. L.
Khotinov, V. A.
Urtsev, V. N.
Danilov, S. V.
Urtsev, N. V.
Platov, S. I.
Stepanov, S. I.
Issue Date: 2022
Publisher: MDPI
MDPI AG
Citation: Tensile Deformation and Fracture Behavior of API-5L X70 Line Pipe Steel / M. L. Lobanov, V. A. Khotinov, V. N. Urtsev et al. // Materials. — 2022. — Vol. 15. — Iss. 2. — 501.
Abstract: Thermo-mechanical controlled processing (TMCP) is employed to obtain the required level of mechanical properties of contemporary HSLA steel plates utilized for gas and oil pipeline production. The strength and crack resistance of pipeline steels are mainly determined by its microstructure and crystallographic texture. In this study, the influence of the structural and textural states of industrially produced API-5L X70-X80 pipeline steels on tensile mechanical properties was analyzed. TMCP routes with different hot rolling temperatures and cooling rates were employed. The texture of steel was assessed using the Taylor factor, which was calculated based on electron backscatter diffraction (EBSD). The decrease in rolling temperature resulted in the sharper texture characterized by {001} planes banding (cleavage planes in the bcc lattice) parallel to rolling direction. The tensile deformation behavior at the stage of necking was determined by the crystallographic and morphological texture of the material and demonstrated significant anisotropy. Rupture of all investigated samples was accompanied by the development of splitting on the fracture surface. The splitting was localized in the rolling plane similar to the splitting in standard Charpy tests of pipeline steels. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords: DEFORMATION ANISOTROPY
EBSD
HSLA STEEL
NECKINGELLIPTIC-ITY
SPLITTING
TAYLOR FACTOR
TEXTURE
TMCP
ANISOTROPY
DEFORMATION
FRACTURE
FRACTURE MECHANICS
HOT ROLLING
PIPELINES
STEEL PIPE
DEFORMATION ANISOTROPY
DEFORMATION BEHAVIOR
ELECTRON BACK SCATTER DIFFRACTION
ELECTRON BACKSCATTER DIFFRACTION
HSLA STEEL
NECKINGELLIPTIC-ITY
SPLITTINGS
TAYLOR FACTOR
TENSILE DEFORMATION
THERMO-MECHANICAL CONTROLLED PROCESSING
TEXTURES
URI: http://hdl.handle.net/10995/112113
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85122749743
PURE ID: 29477958
ISSN: 1996-1944
metadata.dc.description.sponsorship: Funding: This research was funded by Russian Science Foundation, grant number 22-29-00411.
RSCF project card: 22-29-00411
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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