Abstract
| Original language | English |
|---|---|
| Journal | Materials at High Temperatures |
| Volume | 35 |
| Issue number | 1-3 |
| Pages (from-to) | 243-254 |
| ISSN | 0960-3409 |
| DOIs | |
| Publication status | Published - 2018 |
Keywords
- Internal corrosion
- Effect of microstructure
- KCl corrosion
- Modified 310 steel
- High temperature corrosion
- Sigma-phase
Cite this
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Effect of microstructure on KCl corrosion attack of modified AISI 310 steel. / Malede, Yohanes Chekol; Montgomery, Melanie; Dahl, Kristian Vinter; Hald, John.
In: Materials at High Temperatures, Vol. 35, No. 1-3, 2018, p. 243-254.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Effect of microstructure on KCl corrosion attack of modified AISI 310 steel
AU - Malede, Yohanes Chekol
AU - Montgomery, Melanie
AU - Dahl, Kristian Vinter
AU - Hald, John
PY - 2018
Y1 - 2018
N2 - The effect of microstructure on KCl corrosion attack was studied using a specifically chosen modified AISI 310 austenitic steel in a 15% (v/v) H2O (g)+ 5%(v/v) O2 (g) + N2 (g) (balance) atmosphere at 600°C for 168 h. The material was a targeted choice as it allows investigation of different microstructures i.e. as-received (without sigma phase) and heat-treated (29% σ-phase per area) microstructures. The corrosion attack was studied with light optical, scanning electron and transmission electron microscopy as well as X-ray diffraction. The heat-treated sample showed a corrosion attack that was 5 times higher than the as-received sample. In the heat-treated sample, the σ-phase was selectively attacked. At the corrosion front, chlorine (but not potassium) was detected in the selectively attacked σ- phase but not in the unattacked adjacent matrix. Therefore, the corrosion attack was propagated by preferential σ-phase attack by chlorine species.
AB - The effect of microstructure on KCl corrosion attack was studied using a specifically chosen modified AISI 310 austenitic steel in a 15% (v/v) H2O (g)+ 5%(v/v) O2 (g) + N2 (g) (balance) atmosphere at 600°C for 168 h. The material was a targeted choice as it allows investigation of different microstructures i.e. as-received (without sigma phase) and heat-treated (29% σ-phase per area) microstructures. The corrosion attack was studied with light optical, scanning electron and transmission electron microscopy as well as X-ray diffraction. The heat-treated sample showed a corrosion attack that was 5 times higher than the as-received sample. In the heat-treated sample, the σ-phase was selectively attacked. At the corrosion front, chlorine (but not potassium) was detected in the selectively attacked σ- phase but not in the unattacked adjacent matrix. Therefore, the corrosion attack was propagated by preferential σ-phase attack by chlorine species.
KW - Internal corrosion
KW - Effect of microstructure
KW - KCl corrosion
KW - Modified 310 steel
KW - High temperature corrosion
KW - Sigma-phase
U2 - 10.1080/09603409.2017.1389381
DO - 10.1080/09603409.2017.1389381
M3 - Journal article
VL - 35
SP - 243
EP - 254
JO - Materials at High Temperatures
JF - Materials at High Temperatures
SN - 0960-3409
IS - 1-3
ER -