Evaluation of the Corrosion Resistance of AISI 316l Steel Subjected to Severe Deformation Using the Groove Pressing Technique

Revista Facultad de Ingeniería

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Title Evaluation of the Corrosion Resistance of AISI 316l Steel Subjected to Severe Deformation Using the Groove Pressing Technique
Evaluación de la resistencia a la corrosión del acero AISI 316l sometido a deformaciones severas mediante la técnica presión calibrada
 
Creator Aragón-Lozano, Walter Yesid
Fernández-Vega, Luis Felipe
Higuera-Cobos, Oscar Fabián
Tristancho-Reyes, José Luis
Pedraza-Yepes, Cristian Antonio
 
Subject austenitic stainless steel
corrosion rate
groove pressing
linear polarization resistance
severe plastic deformation
Tafel plot
acero inoxidable austenítico
curvas de Tafel
deformación plástica severa
presión calibrada
resistencia a la polarización lineal
velocidad de corrosión
 
Description In this investigation, samples of AISI 316L steel were subjected to severe plastic deformation by the groove pressing (GP) technique using 2 dies A2 type tool steel dies with dimensions of 96 mm X 96 mm, a corrugated die with 2 mm teeth and 45° angle and a flat die. Each pass through the GP die includes 2 states of corrugated and 2 states of straightening with a 180° rotation between each of them. This configuration provides the material with an equivalent theoretical deformation per pass of ε~1.16. The material was deformed by 4 passes per GP to an equivalent deformation of ε~4.64. Prior to the deformation, the specimens were subjected to an annealing heat treatment for 1 hour at 1000 °C with water cooling, in order to eliminate the lamination texture. The annealed and deformed material was characterized chemically and microstructurally by X-ray fluorescence and scanning electron microscopy, respectively. In order to evaluate the corrosion behavior of the material, linear polarization resistance and analysis by Tafel plot were used in a 0.6 M NaCl solution for 0 and 24 hours. The results show an atypical behavior regarding the corrosion resistance of AISI 316L steel. An increase in corrosion resistance of 45% of the material was observed after 4 passes per GP compared to annealed material (0 passes).
En esta investigación, muestras de acero AISI 316L fueron sometidas a deformación plástica severa por la técnica presión calibrada (GP) mediante el uso de 2 matrices de acero de herramientas tipo A2 con dimensiones de 96 mm X 96 mm, una matriz corrugada con dientes de 2 mm y ángulo de 45° y una matriz plana. Cada pase por la matriz GP incluye 2 estados de corrugado y 2 estados de enderezado con una rotación de 180° entre cada uno de ellos. Esta configuración provee al material una deformación teórica equivalente por pase de ε~1.16. Al material fue deformado por 4 pases por GP hasta una deformación equivalente de ε~4,64. Previo a la deformación, las probetas fueron sometidas a un tratamiento térmico de recocido durante una 1 hora a 1000 °C con enfriamiento en agua, con el fin de eliminar la textura de laminación. El material en estado de recocido y deformado se caracterizó química y microestructuralmente mediante fluorescencia de rayos X y microscopía electrónica de barrido, respectivamente. Con el fin de evaluar el comportamiento a la corrosión del material, se utilizó la resistencia a la polarización lineal y el análisis mediante las curvas de Tafel en una solución de 0,6 M de NaCl por un tiempo de 0 y 24 horas. Los resultados muestran un comportamiento atípico en cuanto a la resistencia a la corrosión del acero AISI 316L. Se observó un aumento en la resistencia a la corrosión del 45% del material después de 4 pases por GP en comparación con el material recocido (0 pases).
 
Publisher Universidad Pedagógica y Tecnológica de Colombia
 
Date 2019-10-29
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
application/pdf
application/xml
 
Identifier https://revistas.uptc.edu.co/index.php/ingenieria/article/view/10343
10.19053/01211129.v29.n54.2020.10343
 
Source Revista Facultad de Ingeniería; Vol 29 No 54 (2020): Continuos Publication; e10343
Revista Facultad de Ingeniería; Vol. 29 Núm. 54 (2020): Publicación Continua; e10343
2357-5328
0121-1129
 
Language spa
eng
 
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https://revistas.uptc.edu.co/index.php/ingenieria/article/view/10343/8542
https://revistas.uptc.edu.co/index.php/ingenieria/article/view/10343/9124
https://revistas.uptc.edu.co/index.php/ingenieria/article/view/10343/9169
 
Coverage N.A.
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Rights http://creativecommons.org/licenses/by/4.0
 

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