Influencia del material de aporte en la resistencia a corrosión por picadura en uniones soldadas de un acero inoxidable dúplex 2205

  1. Múnez, C.J.
  2. Utrilla, M. V.
  3. Ureña, Alejandro
  4. Otero Huerta, Enrique
Journal:
Revista de metalurgia

ISSN: 0034-8570

Year of publication: 2007

Volume: 43

Issue: 4

Pages: 245-251

Type: Article

DOI: 10.3989/REVMETALM.2007.V43.I4.70 DIALNET GOOGLE SCHOLAR lock_openOpen access editor

More publications in: Revista de metalurgia

Abstract

In this work, it has been studied the pitting corrosion resistance of welding duplex stainless steel 2205. Unions were made by GMAW process with different fillers: duplex ER 2209 and two austenitic (ER 316LSi and ER 308LSi). The microstructure obtained with the duplex ER 2209 filler is similar to the duplex 2205 base material, but the unions produced with the austenitic fillers cause a decrease of the phases relation a/g. To evaluate the influence of the filler on the weld, the pitting corrosion resistance was determined by electrochemical critical pitting temperature test (TCP) and the mechanical properties by the hardness. The phases imbalance produced for the dissimilar fillers bring out a variation of the pitting corrosion resistance and the mechanical properties

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