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

Iordachescu, Mihaela and Ocaña Moreno, José Luis (2013). Residual stress distribution in ferritic-austenitic steel joints made by laser welding. "Soldadura y tecnologías de unión", v. 24 (n. 135); pp. 10-13. ISSN 1130-0280.

Description

Title: Residual stress distribution in ferritic-austenitic steel joints made by laser welding
Author/s:
  • Iordachescu, Mihaela
  • Ocaña Moreno, José Luis
Item Type: Article
Título de Revista/Publicación: Soldadura y tecnologías de unión
Date: December 2013
ISSN: 1130-0280
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

The present investigation addresse the influence of laser welding process-ing parameters used for joining dis-similar metals (ferritic to austenitic steel), on the induced residual stress field. Welding was performed on a Nd:YAG laser DY033 (3300 W) in a continuous wave (CW), keyhole mode. The base metals (BM) employed in this study are AISI 1010 carbon steel (CS) and AISI 304L austenitic stainless steel (SS). Pairs of dissimilar plates of 200 mm x 45 mm x 3 mm were butt joined by laser welding. Different sets of parameters were used to engineer the base metals apportionment at joint formation, namely distinct dilution rates. Residual strain scanning, carried out by neutron diffraction was used to assess the joints. Through-thickness residual stress maps were determined for the laser welded samples of dis-similar steels using high spatial reso-lution. As a result, an appropriate set of processing parameters, able to mi-nimize the local tensile residual stress associated to the welding process, was found.

More information

Item ID: 29034
DC Identifier: http://oa.upm.es/29034/
OAI Identifier: oai:oa.upm.es:29034
Official URL: http://www.publieve.com/detnumero.php?rev=5&num=88
Deposited by: Memoria Investigacion
Deposited on: 04 Jun 2014 12:07
Last Modified: 03 Mar 2017 16:41
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