Exploring the Impact of Cooling Rate on Microstructural Features, Mechanical Properties, and Corrosion Resistance of a Novel Nb-Stabilized Super Duplex Stainless Steel in Shielded Metal Arc Welding
| Primer Autor |
Rojas, David
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| Co-autores |
Onate, Angelo
Torres, Enrique
Olave, Diego
Ramirez, Jesus
Medina, Carlos
Sanhueza, Juan Pablo
Tuninetti, Victor
Rojas, David
|
| Título |
Exploring the Impact of Cooling Rate on Microstructural Features, Mechanical Properties, and Corrosion Resistance of a Novel Nb-Stabilized Super Duplex Stainless Steel in Shielded Metal Arc Welding
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| Editorial |
MDPI
|
| Revista |
CRYSTALS
|
| Lenguaje |
en
|
| Resumen |
The corrosion and mechanical response produced by quenching in the welded joint of a new Nb-doped stainless steel designed by the CALPHAD method and produced by open-atmosphere casting with recycled materials were investigated to contribute to the circular economy and to establish disruptive manufacturing criteria based on metallurgical principles. The steel was initially subjected to solubilization heat treatment and partial solubilization treatment at 1090 & DEG,C to obtain an appropriate a/? balance and carbide solubilization. It was then welded by the SMAW process, quenched, and tempered at three different cooling rates. As a result, a good fit between the phases predicted by the CALPHAD method and those observed by X-ray diffraction and scanning electron microscopy were obtained, with minor differences attributable to the precipitation and diffusion kinetics required for dissolution or nucleation and growth of the phases in the system. The forced air quenching mechanism was identified as providing an a/? phase equilibrium equivalent to 62/38 as the most effective quenching method for achieving the optimum mechanical and corrosion response, even with the post-weld s phase and showing superior results to those of the base metal. The outstanding mechanical and corrosion responses resulted from a proper balance of the primary phases in the duplex steel with a precipitation-strengthening mechanism. The damage tolerance obtained by forced air quenching was superior to that obtained by water and air quenching, with a PSE of 24.71 GPa% post-welding.
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| Fecha Publicación |
2023
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| Tipo de Recurso |
artículo original
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| doi |
10.3390/cryst13081192
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| Formato Recurso |
PDF
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| Palabras Claves |
corrosion
sigma phase
super duplex stainless steel
mechanical response
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| Ubicación del archivo | |
| Categoría OCDE |
Cristalografía
Ciencia de los Materiales
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| Materias |
corrosión
fase sigma
acero inoxidable súper dúplex
respuesta mecánica
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| Identificador del recurso (Mandatado-único) |
artículo original
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| Versión del recurso (Recomendado-único) |
versión publicada
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| License |
CC BY 4.0
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| Condición de la licencia (Recomendado-repetible) |
CC BY 4.0
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| Derechos de acceso |
acceso abierto
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| Access Rights |
acceso abierto
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| Id de Web of Science |
WOS:001057131700001
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| Tipo de ruta |
verde# dorado
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| Categoría WOS |
Cristalografía
Ciencia de los Materiales
|
| Referencia del Financiador (Mandatado si es aplicable-repetible) |
UdeC 220.098.005-INV
ANID-FONDECYT 1221600
ANID FONDECYT 1221600
|
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ciencia.abierta@ufrontera.cl