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Volume 13
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10.3390/coatings13020470
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Article

Improving the Surface Properties of an API 5L Grade B Pipeline Steel by Applying the Boriding Process—Part II: On the Changes in the Mechanical Properties

by
Laura Montserrat Alcantar-Martínez
1,
Pablo Alfredo Ruiz-Trabolsi
2,
Raúl Tadeo-Rosas
3,
José Guadalupe Miranda-Hernández
4,
Román Cabrera-Sierra
1,
Julio César Velázquez
1,5,* and
Enrique Hernández-Sánchez
2,*
1
Departamento de Ingeniería Química Industrial, ESIQIE, Instituto Politécnico Nacional, UPALM Edif. 7, Zacatenco, México City 07738, Mexico
2
Instituto Politécnico Nacional, Unidad Profesional Interdisciplinaria de Biotecnología, Departamento de Bioingeniería Avenida Acueducto s/n Barrio La Laguna Ticomán, México City 07340, Mexico
3
Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Coahuila, Unidad Torreón, Carretera Torreón-Matamoros, km 7.5, Ciudad Universitaria, Ejido el Águila, Torreón Coahuila 27276, Mexico
4
Laboratorio de Investigación y Desarrollo de Materiales Industriales, Centro Universitario UAEM Valle de México, Universidad Autónoma del Estado de México, Atizapán de Zaragoza 54500, Mexico
5
Maestría en Ingeniería de Hidrocarburos y sus Energéticos Asociados, ESIQIE, Instituto Politécnico Nacional, UPALM Edif. 8, Zacatenco, México City 07738, Mexico
*
Authors to whom correspondence should be addressed.
Coatings 2023, 13(2), 470; https://doi.org/10.3390/coatings13020470
Submission received: 30 December 2022 / Revised: 3 February 2023 / Accepted: 16 February 2023 / Published: 18 February 2023
(This article belongs to the Topic Materials and Surface Treatment Processes Used for Engineering Applications)
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Abstract

The mechanical performance of API 5L grade B steel, after undergoing a thermochemical boriding process, was assessed. We quantified the boride layer microhardness over cross-section specimens, with the aim of characterizing the mechanical resistance under different conditions. The pipeline steel was analyzed because of the changes in yield strength, ultimate tensile strength, and ductility after treatment with boron. These oil and gas pipelines must work in aggressive environments, so borided pipeline steel specimens were tested to assess their erosion–corrosion resistance. Another important characteristic to evaluate was the wearing resistance, because the pipelines tend to suffer scratches when they are under construction. We also present a discussion of the results of the total research work (Part I and Part II), including the results of the boride layer characterization as well as the changes in the substrate, with the goal of selecting the best conditions under which to treat pipeline steel. More extreme treatment conditions can help to form more stable and resistant boride layers, but they can considerably modify some mechanical characteristics of the API 5L grade B steel. For this reason, the boriding treatment conditions must be chosen in a synergistic way.
Keywords: boride layers; pipeline steel; ductility; hardness; wear resistance; erosion–corrosion boride layers; pipeline steel; ductility; hardness; wear resistance; erosion–corrosion

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MDPI and ACS Style

Alcantar-Martínez, L.M.; Ruiz-Trabolsi, P.A.; Tadeo-Rosas, R.; Miranda-Hernández, J.G.; Cabrera-Sierra, R.; Velázquez, J.C.; Hernández-Sánchez, E. Improving the Surface Properties of an API 5L Grade B Pipeline Steel by Applying the Boriding Process—Part II: On the Changes in the Mechanical Properties. Coatings 2023, 13, 470. https://doi.org/10.3390/coatings13020470

AMA Style

Alcantar-Martínez LM, Ruiz-Trabolsi PA, Tadeo-Rosas R, Miranda-Hernández JG, Cabrera-Sierra R, Velázquez JC, Hernández-Sánchez E. Improving the Surface Properties of an API 5L Grade B Pipeline Steel by Applying the Boriding Process—Part II: On the Changes in the Mechanical Properties. Coatings. 2023; 13(2):470. https://doi.org/10.3390/coatings13020470

Chicago/Turabian Style

Alcantar-Martínez, Laura Montserrat, Pablo Alfredo Ruiz-Trabolsi, Raúl Tadeo-Rosas, José Guadalupe Miranda-Hernández, Román Cabrera-Sierra, Julio César Velázquez, and Enrique Hernández-Sánchez. 2023. "Improving the Surface Properties of an API 5L Grade B Pipeline Steel by Applying the Boriding Process—Part II: On the Changes in the Mechanical Properties" Coatings 13, no. 2: 470. https://doi.org/10.3390/coatings13020470

APA Style

Alcantar-Martínez, L. M., Ruiz-Trabolsi, P. A., Tadeo-Rosas, R., Miranda-Hernández, J. G., Cabrera-Sierra, R., Velázquez, J. C., & Hernández-Sánchez, E. (2023). Improving the Surface Properties of an API 5L Grade B Pipeline Steel by Applying the Boriding Process—Part II: On the Changes in the Mechanical Properties. Coatings, 13(2), 470. https://doi.org/10.3390/coatings13020470

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