Paper Title:
Crack Bridging in Stress Corrosion Cracking of Duplex Stainless Steels
  Abstract

Wedge open loaded (WOL) specimens of age hardened Zeron 100 duplex stainless steel were tested in 3.5 wt % NaCl solution with cathodic polarizes applied at-900mV/SCE to investigate stress corrosion cracking mechanism in duplex stainless steel. The interaction between microstructure and mechanism of stress corrosion cracking was studied. Fracture mechanism was studied by using scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD). The material was found cracked by ferrite cleavage, austenite tearing and austenite dissolution by environment. The ferrite cleavage took place along {100} planes and {112} twin habit planes. The austenite grains appear to act as crack bridging & crack arrester and failed by tearing & stress corrosion cracking.

  Info
Periodical
Edited by
Shaheed Khan, Iftikhar us Salam and Karim Ahmed
Pages
445-452
DOI
10.4028/www.scientific.net/KEM.442.445
Citation
M. Sarwar, E. Ahmad, T. Manzoor, "Crack Bridging in Stress Corrosion Cracking of Duplex Stainless Steels", Key Engineering Materials, Vol. 442, pp. 445-452, 2010
Online since
June 2010
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Price
$32.00
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