Residual stress distribution in ferritic to austenitic steel joints made by laser welding,

Iordachescu, Mihaela and Ruiz Hervías, Jesús and Luzin, V. and Scutelnicu, Elena and Valiente Cancho, Andrés and Ocaña Moreno, José Luis (2013). Residual stress distribution in ferritic to austenitic steel joints made by laser welding,. "The Annals of Dunarea de Jos University of Galati", v. 24 (n. 12); pp. 45-49. ISSN 1221-4639.

Description

Title: Residual stress distribution in ferritic to austenitic steel joints made by laser welding,
Author/s:
  • Iordachescu, Mihaela
  • Ruiz Hervías, Jesús
  • Luzin, V.
  • Scutelnicu, Elena
  • Valiente Cancho, Andrés
  • Ocaña Moreno, José Luis
Item Type: Article
Título de Revista/Publicación: The Annals of Dunarea de Jos University of Galati
Date: 2013
ISSN: 1221-4639
Volume: 24
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In this study, autogenous laser welding was used to join thin plates of low carbon ferritic and austenitic stainless steel. Due to the differences in the thermo-physical properties of base metals, this kind of weld exhibits a complex microstructure, which frequently leads to an overall loss of joint quality. Four welded samples were prepared by using different sets of processing parameters, with the aim of minimizing the induced residual stress field. The dissimilar austenitic-ferritic joints obtained under all welding conditions were uniform and free of defects. Variations in beam position did not influence the weld geometiy, which is a typical keyhole welding. Microstructural characterization and residual strain scanning (by neutron diffraction) were used to assess the features of the joints. By varying laser beam power density and by displacing the laser beam towards the carbon steel side, an optimum combination of processing parameters was found.

More information

Item ID: 29037
DC Identifier: http://oa.upm.es/29037/
OAI Identifier: oai:oa.upm.es:29037
Official URL: http://www.cmrs.ugal.ro/AWET.htm
Deposited by: Memoria Investigacion
Deposited on: 10 Jun 2014 10:53
Last Modified: 03 Mar 2017 16:44
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