Paper Title:
Initiation and Growth of Short Cracks during Cycling in an Aged Superduplex Stainless Steel
  Abstract

The kinetics of short crack growth during cycling has been studied in a superduplex stainless steel in aged condition. After few cycles, slip lines appear distributed in both phases but the preferred phase for microcrack nucleation is the ferrite. Contrary to the exponential behavior observed in the as-received material, the growth rate of microcracks in aged condition follows a rather linear law. Internal dislocation structures were studied in the near surface region; microbands that sometimes extend over several grains were found at approximately 45º of the tensile axis on ferrite grains. The origin of the microbands has been analyzed and correlated with the microcracks.

  Info
Periodical
Edited by
Pavel Šandera
Pages
411-414
DOI
10.4028/www.scientific.net/KEM.465.411
Citation
M. Balbi, S. Hereñú, I. Proriol Serre, J. B. Vogt, A.F. Armas, I. Alvarez-Armas, "Initiation and Growth of Short Cracks during Cycling in an Aged Superduplex Stainless Steel", Key Engineering Materials, Vol. 465, pp. 411-414, 2011
Online since
January 2011
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