Effect of Ce on the Microstructure and Corrosion Resistance of Al-5Mg-3Zn-1Cu Alloy
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Microstructure of As-Cast Alloy
3.2. Results and Analysis of Corrosion Resistance
4. Conclusions
- After adding Ce element to the alloy, the main microstructure of the alloy was α-Al, T-AlMgZnCu, Al2Cu, and a bulk rich Ce phase.
- The addition of Ce can effectively refine the microstructure of the alloy. When the addition of Ce is 0.15 wt.%, the refinement effect is the most obvious, and the precipitated second phase is the most uniform.
- The results of weight loss experiments show that Ce can effectively reduce the corrosion rate of Al-5Mg-3Zn-1Cu alloy, and also increase the corrosion potential of Al-5Mg-3Zn-1Cu and reduce the local corrosion sensitivity of the alloy.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Parameter Name | Unit | Parameter Value |
---|---|---|
Rated power | Kw | 5 |
Rated voltage | Volt | 220 |
Rated temperature | °C | 1000 |
Connection method of heating element | / | Parallel connection |
Heating time | Min | ≤50 |
Loss of power | Kw | ≤1.2 |
Furnace size | Mm | Φ200 × h250 |
Weight | Kg | 80 |
Alloys | Mg | Zn | Cu | Ce | Al |
---|---|---|---|---|---|
Al-5Mg-3Zn-1Cu | 5.21 | 2.94 | 0.94 | \ | Bal. |
Al-5Mg-3Zn-1Cu-0.15Ce | 4.94 | 2.91 | 1.05 | 0.12 | Bal. |
Al-5Mg-3Zn-1Cu-0.25Ce | 4.92 | 3.12 | 0.98 | 0.27 | Bal. |
Al-5Mg-3Zn-1Cu-0.50Ce | 5.18 | 3.06 | 0.96 | 0.53 | Bal. |
Element | Al | Mg | Zn | Cu | Ce | Phase |
---|---|---|---|---|---|---|
1 | 97.00 | 2.61 | 0.17 | 0.22 | \ | ɑ-Al |
2 | 79.91 | 10.08 | 3.89 | 4.89 | \ | T-AlMgZnCu |
3 | 78.76 | 0.04 | 3.25 | 17.89 | 0.06 | Al2Cu |
4 | 82.25 | 9.45 | 2.95 | 5.22 | 0.13 | T-AlMgZnCu |
5 | 91.24 | 4.23 | 1.22 | 0.04 | 3.27 | AlMgZnCe |
Alloys | Ecorr(V) | Icorr(10−6 A) | Rp(Ω) |
---|---|---|---|
Al-5Mg-3Zn-1Cu | −1.253 | 8.334 | 3596 |
Al-5Mg-3Zn-1Cu-0.15Ce | −1.193 | 5.850 | 4413 |
Al-5Mg-3Zn-1Cu-0.25Ce | −1.231 | 7.253 | 4193 |
Al-5Mg-3Zn-1Cu-0.50Ce | −1.234 | 7.769 | 4136 |
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Zhang, X.; Sui, Y.; Jiang, Y.; Wang, Q. Effect of Ce on the Microstructure and Corrosion Resistance of Al-5Mg-3Zn-1Cu Alloy. Metals 2022, 12, 371. https://doi.org/10.3390/met12030371
Zhang X, Sui Y, Jiang Y, Wang Q. Effect of Ce on the Microstructure and Corrosion Resistance of Al-5Mg-3Zn-1Cu Alloy. Metals. 2022; 12(3):371. https://doi.org/10.3390/met12030371
Chicago/Turabian StyleZhang, Xingwen, Yudong Sui, Yehua Jiang, and Qudong Wang. 2022. "Effect of Ce on the Microstructure and Corrosion Resistance of Al-5Mg-3Zn-1Cu Alloy" Metals 12, no. 3: 371. https://doi.org/10.3390/met12030371