SUSCEPTIBILITY OF ALLOY 800 TO STRESS-CORROSION CRACKING INVESTIGATED IN CAUSTIC SOLUTIONS AT HIGH-TEMPERATURE AND HIGH-PRESSURE CONDITIONS


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:
M. Bryk (University of Toronto)
D. Artymowicz (University of Toronto)
A. Carcea (University of Toronto)
R. Newman (University of Toronto)
A. Korinek (McMaster University)
G. Botton (McMaster University)
  

Abstract

Susceptibility of Alloy 800 towards stress-corrosion cracking (SCC) was investigated in 50 % NaOH under high-temperature and high-pressure conditions at different electrochemical potentials. The results of SCC experiments performed on Alloy 800 C-rings showed propagation of massive transgranular cracks accompanied by the presence of nanoporosity behind the crack tip. The depth of cracks and degree of porosity formed on the surface depended on the electrochemical potential.

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