Abstract
The changes in the microstructure and surface morphology, caused by heat treatment, of binary AlSn model alloys, containing 30-1000. ppm tin were investigated with the purpose of understanding activation of aluminium by trace element tin in aqueous media. Specimens prepared by casting and cold-rolling in the laboratory were annealed for 1. h at 300 or 600 °C and quenched in water, and then characterised by various surface-analytical techniques. In the as-rolled condition, tin was in solid solution with aluminium. The microstructure and surface morphology in this condition were not different from those of pure aluminium. Significant segregation of liquid Sn occurred by annealing at 300 °C to the metal surface, caused by the combined effect of limited solubility and high mobility of Sn in Al at this temperature. Segregated Sn caused oxidation of aluminium during water quenching following heat treatment. The resulting oxide formation increased with increasing Sn content of the alloy from localised cases to extensive coverage by a 1.3 μm thick scale. Most of the Sn was homogenised in solid solution with Al by annealing at 600 °C for all Sn concentrations. The alloy containing 1000. ppm Sn still formed a thick oxide as a result of quenching in water after heat treatment, caused by enrichment of Sn at the metal-oxide interface by dealloying of Al.
| Original language | English |
|---|---|
| Pages (from-to) | 204-213 |
| Number of pages | 10 |
| Journal | Corrosion Science |
| Volume | 68 |
| DOIs | |
| Publication status | Published - Mar 2013 |
| Externally published | Yes |
Keywords
- A. Aluminium
- B. SEM
- C. De-alloying
- C. Oxidation
- C. Passivity
Programme Area
- Programme Area 4: Mineral Resources
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Tan, J., Walmsley, J. C., Holme, B., Nordmark, H., & Nisancioglu, K. (2013). Surface segregation of tin by heat treatment of dilute aluminium-tin alloys. Corrosion Science, 68, 204-213. https://doi.org/10.1016/j.corsci.2012.11.018
Tan, Juan ; Walmsley, John Charles ; Holme, Børge et al. / Surface segregation of tin by heat treatment of dilute aluminium-tin alloys. In: Corrosion Science. 2013 ; Vol. 68. pp. 204-213.
@article{4bac98e19f154ab5ad8d060726f51975,
title = "Surface segregation of tin by heat treatment of dilute aluminium-tin alloys",
abstract = "The changes in the microstructure and surface morphology, caused by heat treatment, of binary AlSn model alloys, containing 30-1000. ppm tin were investigated with the purpose of understanding activation of aluminium by trace element tin in aqueous media. Specimens prepared by casting and cold-rolling in the laboratory were annealed for 1. h at 300 or 600 °C and quenched in water, and then characterised by various surface-analytical techniques. In the as-rolled condition, tin was in solid solution with aluminium. The microstructure and surface morphology in this condition were not different from those of pure aluminium. Significant segregation of liquid Sn occurred by annealing at 300 °C to the metal surface, caused by the combined effect of limited solubility and high mobility of Sn in Al at this temperature. Segregated Sn caused oxidation of aluminium during water quenching following heat treatment. The resulting oxide formation increased with increasing Sn content of the alloy from localised cases to extensive coverage by a 1.3 μm thick scale. Most of the Sn was homogenised in solid solution with Al by annealing at 600 °C for all Sn concentrations. The alloy containing 1000. ppm Sn still formed a thick oxide as a result of quenching in water after heat treatment, caused by enrichment of Sn at the metal-oxide interface by dealloying of Al.",
keywords = "A. Aluminium, B. SEM, C. De-alloying, C. Oxidation, C. Passivity",
author = "Juan Tan and Walmsley, {John Charles} and B{\o}rge Holme and Heidi Nordmark and Kemal Nisancioglu",
note = "Funding Information: Patrick Chapon of HORIBA Jobin Yvon and Jan Tore Buvik Gundersen of Hydro Aluminium assisted with the GD-OES measurements. This work was supported by The Research Council of Norway .",
year = "2013",
month = mar,
doi = "10.1016/j.corsci.2012.11.018",
language = "English",
volume = "68",
pages = "204--213",
journal = "Corrosion Science",
issn = "0010-938X",
publisher = "Elsevier",
}
Tan, J, Walmsley, JC, Holme, B, Nordmark, H & Nisancioglu, K 2013, 'Surface segregation of tin by heat treatment of dilute aluminium-tin alloys', Corrosion Science, vol. 68, pp. 204-213. https://doi.org/10.1016/j.corsci.2012.11.018
Surface segregation of tin by heat treatment of dilute aluminium-tin alloys. / Tan, Juan; Walmsley, John Charles; Holme, Børge et al.
In: Corrosion Science, Vol. 68, 03.2013, p. 204-213.
Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Surface segregation of tin by heat treatment of dilute aluminium-tin alloys
AU - Tan, Juan
AU - Walmsley, John Charles
AU - Holme, Børge
AU - Nordmark, Heidi
AU - Nisancioglu, Kemal
N1 - Funding Information:Patrick Chapon of HORIBA Jobin Yvon and Jan Tore Buvik Gundersen of Hydro Aluminium assisted with the GD-OES measurements. This work was supported by The Research Council of Norway .
PY - 2013/3
Y1 - 2013/3
N2 - The changes in the microstructure and surface morphology, caused by heat treatment, of binary AlSn model alloys, containing 30-1000. ppm tin were investigated with the purpose of understanding activation of aluminium by trace element tin in aqueous media. Specimens prepared by casting and cold-rolling in the laboratory were annealed for 1. h at 300 or 600 °C and quenched in water, and then characterised by various surface-analytical techniques. In the as-rolled condition, tin was in solid solution with aluminium. The microstructure and surface morphology in this condition were not different from those of pure aluminium. Significant segregation of liquid Sn occurred by annealing at 300 °C to the metal surface, caused by the combined effect of limited solubility and high mobility of Sn in Al at this temperature. Segregated Sn caused oxidation of aluminium during water quenching following heat treatment. The resulting oxide formation increased with increasing Sn content of the alloy from localised cases to extensive coverage by a 1.3 μm thick scale. Most of the Sn was homogenised in solid solution with Al by annealing at 600 °C for all Sn concentrations. The alloy containing 1000. ppm Sn still formed a thick oxide as a result of quenching in water after heat treatment, caused by enrichment of Sn at the metal-oxide interface by dealloying of Al.
AB - The changes in the microstructure and surface morphology, caused by heat treatment, of binary AlSn model alloys, containing 30-1000. ppm tin were investigated with the purpose of understanding activation of aluminium by trace element tin in aqueous media. Specimens prepared by casting and cold-rolling in the laboratory were annealed for 1. h at 300 or 600 °C and quenched in water, and then characterised by various surface-analytical techniques. In the as-rolled condition, tin was in solid solution with aluminium. The microstructure and surface morphology in this condition were not different from those of pure aluminium. Significant segregation of liquid Sn occurred by annealing at 300 °C to the metal surface, caused by the combined effect of limited solubility and high mobility of Sn in Al at this temperature. Segregated Sn caused oxidation of aluminium during water quenching following heat treatment. The resulting oxide formation increased with increasing Sn content of the alloy from localised cases to extensive coverage by a 1.3 μm thick scale. Most of the Sn was homogenised in solid solution with Al by annealing at 600 °C for all Sn concentrations. The alloy containing 1000. ppm Sn still formed a thick oxide as a result of quenching in water after heat treatment, caused by enrichment of Sn at the metal-oxide interface by dealloying of Al.
KW - A. Aluminium
KW - B. SEM
KW - C. De-alloying
KW - C. Oxidation
KW - C. Passivity
UR - http://www.scopus.com/inward/record.url?scp=84872139362&partnerID=8YFLogxK
U2 - 10.1016/j.corsci.2012.11.018
DO - 10.1016/j.corsci.2012.11.018
M3 - Article
AN - SCOPUS:84872139362
SN - 0010-938X
VL - 68
SP - 204
EP - 213
JO - Corrosion Science
JF - Corrosion Science
ER -
Tan J, Walmsley JC, Holme B, Nordmark H, Nisancioglu K. Surface segregation of tin by heat treatment of dilute aluminium-tin alloys. Corrosion Science. 2013 Mar;68:204-213. doi: 10.1016/j.corsci.2012.11.018