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Enhancing corrosion resistance of Al50Ni50alloy by increasing cooling rate plus annealing
- Source :
- Transactions of Nonferrous Metals Society of China; March 2024, Vol. 34 Issue: 3 p769-785, 17p
- Publication Year :
- 2024
-
Abstract
- Monophasic Al50Ni50ribbons were fabricated by melt spinning at circumferential speeds (Sc) of 21 and 42 m/s, and subsequently annealed at various temperatures. The microstructure and corrosion behavior of ribbons were studied through various experimental methods. With increasing Sc, the as-spun and annealed ribbons at 42 m/s show a higher (100) crystal orientation factor F(100), a lower barrier to recrystallization and a higher total film resistance than the counterparts with 21 m/s. The as-spun ribbon at 42 m/s demonstrated a denser and more stable Al2O3passive film compared to the as-spun and annealed ribbons at 21 m/s. This improvement in passive film can be further enhanced by 700 °C annealing. Therefore, the corrosion resistance of AlNi ribbons can be improved by increasing Scand additional annealing at an appropriate temperature.
Details
- Language :
- English
- ISSN :
- 10036326
- Volume :
- 34
- Issue :
- 3
- Database :
- Supplemental Index
- Journal :
- Transactions of Nonferrous Metals Society of China
- Publication Type :
- Periodical
- Accession number :
- ejs66149044
- Full Text :
- https://doi.org/10.1016/S1003-6326(23)66433-7