Título
Effect on the Microstructure and Mechanical Properties of the Structural Steel Welded in Marine Environment
Autor
José Jorge Ruiz Mondragon
Jorge Leobardo Acevedo Dávila
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
Recently,oildepositswerefoundineverdeeperwaters.Inthiscontext,it isimportanttostudythewaterdeptheffectonparametersinrepairandmaintenance operations of pipelines for extraction and/or transportation of crude oil, of which there is limited information in literature. This paper shows a study of the effect of the water depth on the microstructure and mechanical properties in joining structural steel welded in a marine environment in steels with a maximum CE (carbon equivalent) of 0.37%. Wet welding coupons of steel ASTM A36 were joined by the manual metal arc welding (MMAW) process at depths of 10, 20, 30, and 40m, using AWS Broco SoftTouch as filler metal (3.17mm diameter) inside a simulation hyperbaric chamber. Image analysis was applied to welded coupons, with the aim to obtain the phase quantification and porosity as well as mechanical properties.Theresultsshowthatthereisaninverserelationshipbetweentheincrease indepthat whichtheweldingis performedandthe mechanicalproperties,whilethe fillermetalpropertieswerekeptconstant.Microstructuralchangesvaryasafunction of the depth at which repair-maintenanceis performed,with an increase in growing phase shift which is highly undesirablebecause of their brittleness and hardness.
Fecha de publicación
2017
Tipo de publicación
Capítulo de libro
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Idioma
Inglés
Audiencia
Estudiantes
Investigadores
Sugerencia de citación
Chapter 3 Effect on the Microstructure and Mechanical Properties of the Structural Steel Welded in Marine Environment M. Flores, J.J. Ruiz, F. Macías, and J. Acevedo
Repositorio Orígen
COMIMSA
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762