EVOLUTION OF AN ALLOY 690 SURFACE DURING OXIDATION IN A SIMULATED PWSCC ENVIRONMENT


41th Annual CNS-CNA Student Conference - 2017 June 05

Presented at:
41th Annual CNS-CNA Student Conference
2017 June 05
Location:
Niagara Falls, ON Canada
Session Title:
Student Posters, Wine-&-Cheese Reception

Authors:
A. Eskandari (University of Toronto)
D. Artymowicz (University of Toronto)
S. Ramamurthy (Western University)
R. Newman (University of Toronto)
  

Abstract

The anomalous internal oxidation of Alloy 690 in a simulated primary water environment has been studied by time-resolved SEM and EDX studies. The relatively protective external oxide formed near grain boundaries has a fairly constant width from short exposure times, but the grain boundary region is dynamic, with signs of temporary internal oxidation, accompanied by stress relief due to diffusion of nickel to the grain boundary.

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