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Microstructural and mechanical characterization of the effect of the welding process on creep behavior of welded joint and base metal specimens of Inconel 600

Published online by Cambridge University Press:  23 November 2020

Lourdes Y. Herrera-Chávez ,
Alberto Ruiz ,
Víctor H. López-Morelos ,
Carlos Rubio-González ,
Martín R. Barajas-Álvarez  and
Arnoldo Bedolla Jacuinde
Lourdes Y. Herrera-Chávez
Affiliation:
Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Edificio U, Ciudad Universitaria. 58030, Morelia, Michoacán, México.
Alberto Ruiz*
Affiliation:
Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Edificio U, Ciudad Universitaria. 58030, Morelia, Michoacán, México.
Víctor H. López-Morelos
Affiliation:
Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Edificio U, Ciudad Universitaria. 58030, Morelia, Michoacán, México.
Carlos Rubio-González
Affiliation:
Energy Division, Centro de Ingeniería y Desarrollo Industrial, Pie de la Cuesta. 702, Desarrollo San Pablo, Querétaro, Qro., 76130, México.
Martín R. Barajas-Álvarez
Affiliation:
Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Edificio U, Ciudad Universitaria. 58030, Morelia, Michoacán, México.
Arnoldo Bedolla Jacuinde
Affiliation:
Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Edificio U, Ciudad Universitaria. 58030, Morelia, Michoacán, México.
*
*Corresponding author: Tel.: +52 -443-471-7773. E-mail: alruiz@umich.mx (Alberto Ruiz)
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Abstract

In this study, plates of Inconel 600 superalloy were gas metal arc welded to investigate the effects of the welding process on the creep behavior of the welded samples and compare it to the creep behavior of samples in the as-received condition. Creep tests were performed at two temperatures (600 and 650 °C) with different stress levels. During the welding process, three distinctive microstructural zones are generated, i.e. welded material, heat affected zone, and base metal that may affect the properties of the welded joint. Microstructural, elemental analysis of samples was conducted using Scanning Electron Microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDS). The experimental results show that creep rupture preferentially occurs in the heat-affected zone of the base metal at 4 mm from the fusion line and that the creep behavior of welded samples is different from that of the base metal. These results can be used in the design of structural components to assure their structural integrity.

Type
Articles
Information
MRS Advances , Volume 5 , Issue 59-60: International Materials Research Congress XXIX , 2020 , pp. 3003 - 3014
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Copyright
Copyright © The Author(s), 2020, published on behalf of Materials Research Society by Cambridge University Press

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