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Revista de Chimie, Volume 71, Issue 1, pp. 320-326 (2020)
https://doi.org/10.37358/RC.20.1.7852

Alice Dinu

The Effect of Environment on the Stress Corrosion Cracking of Incoloy 800

Abstract:

This paper studies the stress corrosion cracking (SCC) behaviour of Incoloy 800 in pure 10%NaOH and, respectively, 10%NaOH+0.33g/l NaCl solutions. Notched and un-notched C-ring specimens were tested in a static autoclave at 2600C and 50 bars. To evaluate the electrochemical behaviour of different metal/environment systems, the most important electrochemical parameters were calculated from polarization curves recorded between (-800)mVvsSCE and (+1200)mVvsSCE (scan rate 1mV/s), at 850C. It was emphasised that the presence of Cl- in caustic environment conducts to the decreasing of corrosion rate and corrosion current. Optical microscopy (OM) and scanning electron microscopy (SEM) revealed that the initiation mechanism and penetration depth of SCC cracks depend on the composition of the testing solution: in pure caustic solution, the SCC initiation is transgranular the SCC cracks propagated up to 120m, while in the presence of the Cl-, the SCC cracks started from the pits formed on the samples surface and the SCC depth is shorter than in the pure caustic solution (only up to 20m). X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDS) analyses were used to identify the composition of the oxide layer build-up on the surface of the specimens exposed in autoclaves. The results indicate that, in the presence of the Cl- anions, the spinel oxide NiCr2O4 is formed in a bigger amount. Due to this compound formation, a greater SCC resistance of Incoloy 800 was observed.
Keywords:
Stress corrosion cracking; Incoloy-800 alloy; CANDU steam generator

Issue: 2020 Volume 71, Number 1
Pages: 320-326
https://doi.org/10.37358/RC.20.1.7852
download pdf   Download Pdf Article
Citation Styles
Cite this article as:
DINU, A., , Rev.Chim., 71, no. 1, 2020, p. 320

Vancouver
Dinu A. The Effect of Environment on the Stress Corrosion Cracking of Incoloy 800. Rev. Chim.[internet]. 2020 Jan;71(1):320-326. Available from: https://doi.org/10.37358/RC.20.1.7852


APA 6th edition
Dinu, A., (2020). The Effect of Environment on the Stress Corrosion Cracking of Incoloy 800. Revista de Chimie, 71(1), 320-326. https://doi.org/10.37358/RC.20.1.7852


Harvard
Dinu, A., (2020). 'The Effect of Environment on the Stress Corrosion Cracking of Incoloy 800', Revista de Chimie, 71(1), pp. 320-326. https://doi.org/10.37358/RC.20.1.7852


IEEE
A. Dinu, "The Effect of Environment on the Stress Corrosion Cracking of Incoloy 800". Revista de Chimie, vol. 71, no. 1, pp. 320-326, 2020. [online]. https://doi.org/10.37358/RC.20.1.7852


Text
Alice Dinu,
The Effect of Environment on the Stress Corrosion Cracking of Incoloy 800,
Revista de Chimie,
Volume 71, Issue 1,
2020,
Pages 320-326,
ISSN 2668-8212,
https://doi.org/10.37358/RC.20.1.7852.
(https://revistadechimie.ro/Articles.asp?ID=7852)
Keywords: Stress corrosion cracking; Incoloy-800 alloy; CANDU steam generator


RIS
TY - JOUR
T1 - The Effect of Environment on the Stress Corrosion Cracking of Incoloy 800
A1 - Dinu, Alice
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2020
VL - 71
IS - 1
SP - 320
EP - 326
UR - https://doi.org/10.37358/RC.20.1.7852
KW - Stress corrosion cracking; Incoloy-800 alloy; CANDU steam generator
ER -


BibTex
@article{RevCh2020P320,
author = {Dinu Alice},
title = {The Effect of Environment on the Stress Corrosion Cracking of Incoloy 800},
journal = {Revista de Chimie},
volume = {71},
number = {1},
pages = {320-326},
year = {2020},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.20.1.7852},
url = {https://revistadechimie.ro/Articles.asp?ID=7852}
}
 
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