Evaluation of the Corrosion Resistance of AISI 3161 Steel Subjected to Severe Deformation Using the Groove Pressing Technique/Evaluacion de la resistencia a la corrosion del acero AISI 316l sometido a deformaciones severas mediante la tecnica presion calibrada/Avaliacao da resistencia a corrosao do aco AISI 316l submetido a deformacoes severas mediante a tecnica pressao calibrada

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[degrees] angle and a flat die. Each pass through the GP...

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Bibliographic Details
Published in:Revista FI-UPTC 2020-01, Vol.29 (54), p.1
Main Authors: Aragon-Lozano, Walter-Yesid, Fernandez-Vega, Luis-Felipe, Higuera-Cobos, Oscar-Fabian, Tristancho-Reyes, Jose-Luis, Pedraza-Yepes, Cristian-Antonio
Format: Article
Language:Spanish
Subjects:
Analysis
Annealing
Corrosion
Fluorescence microscopy
Steel
Steel, Stainless
Tool-steel
X-ray spectroscopy
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Summary: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[degrees] angle and a flat die. Each pass through the GP die includes 2 states of corrugated and 2 states of straightening with a 180[degrees] rotation between each of them. This configuration provides the material with an equivalent theoretical deformation per pass of [epsilon]~1.16. The material was deformed by 4 passes per GP to an equivalent deformation of [epsilon]~4.64. Prior to the deformation, the specimens were subjected to an annealing heat treatment for 1 hour at 1000 [degrees]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).
ISSN:0121-1129
DOI:10.19053/01211129.v29.n54.2020.10343