Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 2660 - 2669 |
| Number of pages | 10 |
| Journal | Corrosion Science |
| Volume | 53 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2011 |
Keywords
- Steel
- SEM
- Stress corrosion
Cite this
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Role of Bayer solution concentration and temperature in stress corrosion cracking susceptibility of steel. / Pal, Sarvesh; Ibrahim, R. N.
In: Corrosion Science, Vol. 53, No. 8, 2011, p. 2660 - 2669.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Role of Bayer solution concentration and temperature in stress corrosion cracking susceptibility of steel
AU - Pal, Sarvesh
AU - Ibrahim, R. N.
PY - 2011
Y1 - 2011
N2 - To improve the efficiency of the Bayer process for the extraction of alumina from Bauxite ore, there is a push for increasing processing temperature and caustic concentrations, which has also led to an increased concern for caustic embrittlement. In this study, the caustic cracking behaviour of steel in Bayer solutions of 2.5, 5, 7.5 and 10 mol dm-3 ‘‘free caustic’’ concentrations have been studied at different temperatures using pre-cracked circumferential notch tensile specimens. It has been observed that at 100 oC, steel is susceptible to caustic cracking in each of the four Bayer solutions. Caustic cracking has also been observed at temperatures as low as 55 oC. Tests were also conducted using only the notched specimens (i.e., without pre-cracking) in a 7.5 mol dm-3 ‘‘free caustic’’ Bayer solution at 120 oC to study the stress corrosion crack formation and propagation behaviour in blunt notches.
AB - To improve the efficiency of the Bayer process for the extraction of alumina from Bauxite ore, there is a push for increasing processing temperature and caustic concentrations, which has also led to an increased concern for caustic embrittlement. In this study, the caustic cracking behaviour of steel in Bayer solutions of 2.5, 5, 7.5 and 10 mol dm-3 ‘‘free caustic’’ concentrations have been studied at different temperatures using pre-cracked circumferential notch tensile specimens. It has been observed that at 100 oC, steel is susceptible to caustic cracking in each of the four Bayer solutions. Caustic cracking has also been observed at temperatures as low as 55 oC. Tests were also conducted using only the notched specimens (i.e., without pre-cracking) in a 7.5 mol dm-3 ‘‘free caustic’’ Bayer solution at 120 oC to study the stress corrosion crack formation and propagation behaviour in blunt notches.
KW - Steel
KW - SEM
KW - Stress corrosion
UR - http://www.scopus.com/inward/record.url?scp=79957807299&partnerID=8YFLogxK
U2 - 10.1016/j.corsci.2011.05.005
DO - 10.1016/j.corsci.2011.05.005
M3 - Article
VL - 53
SP - 2660
EP - 2669
JO - Corrosion Science
JF - Corrosion Science
SN - 0010-938X
IS - 8
ER -