CHARACTERIZATION OF THE ULTRASONIC RESPONSE OF A DUPLEX STAINLESS STEEL SAF 2205 DURING SIGMA PHASE DISSOLUTION

Authors

  • Edda Rodrí­guez Prato Universidad Simón Bolí­var
  • Jorge Stella Universidad Simón Bolívar
  • Anton Kryzanowskyj Universidad Simón Bolívar
  • Luis Amorer Universidad Central de Venezuela
  • Antonio Mateo Universitat Politècnica de Catalunya

Abstract

In the present study, the behavior of the ultrasonic variables of velocity and attenuation of longitudinal ultrasonic waves measured in specimens of duplex stainless steel SAF 2205 is evaluated. The study includes the evaluation of specimens that have been treated at 875 º C and 950 º C in order to promote the presence of sigma phase and its dissolution during different periods of time at 950 º C. The results reveal an increase of the velocity of longitudinal ultrasonic waves as sigma phase fraction is increased and a decreasing of this parameter when sigma dissolves. Furthermore, results of attenuation coefficient for each one of the specimens show the effect derived from microstructural changes produced by thermal treatments.

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Author Biographies

Edda Rodrí­guez Prato, Universidad Simón Bolí­var

Profesor Asociado Departamento de Ciencia de los Materiales

Jorge Stella, Universidad Simón Bolívar

Profesor Asociado Departamento de Ciencia de los Materiales

Anton Kryzanowskyj, Universidad Simón Bolívar

Estudiante

Luis Amorer, Universidad Central de Venezuela

Profesor Titular Departamento de Física Aplicada Facultad de Ingeniería

Antonio Mateo, Universitat Politècnica de Catalunya

Profesor Titular Dpto. de Ciencia de los Materiales e Ingeniería Metalúrgica

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Published

2011-05-26

How to Cite

Rodrí­guez Prato, E., Stella, J., Kryzanowskyj, A., Amorer, L., & Mateo, A. (2011). CHARACTERIZATION OF THE ULTRASONIC RESPONSE OF A DUPLEX STAINLESS STEEL SAF 2205 DURING SIGMA PHASE DISSOLUTION . LatinAmerican Journal of Metallurgy and Materials, 49–60. Retrieved from https://www.rlmm.org/ojs/index.php/rlmm/article/view/141

Issue

2012, 32(1)

Section

Regular Articles

License

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