Correlation between Microstructures and Tensile Properties in Friction Stir Welding Joint of Zn-Modified 5083 Al Alloy
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. Welding Appearance
3.2. Mechanical Properties and Microstructure of AA5083 FSW Joint
3.3. Stress Corrosion Behavior
4. Discussion
4.1. Correlation between Welding Morphology, Microstructure, Mechanical Properties and Zn Contents
4.2. Relation of Rotation Speed and Mechanical Properties and Microstructure
4.3. SCC Behavior of Zn-Modified AA5083 Alloy
5. Conclusions
- The welding process parameters: FSW parameters selected in this work were 600 rpm, 300 mm/min, 1000 rpm, 300 mm/min, and 1500 rpm, 300 mm/min. The tensile strength of the three parameters for FSW joints showed little diversity. The tensile strength could reach more than 90% of the base material. The hardness distribution of the FSW joint was ‘W’ shape, the hardness of the welding core area was relatively high, and the hardness of TMAZ was the lowest.
- Through the SSRT test, the FSW processed joints showed higher SCC resistance after adding Zn element. In particular, the AA5083 alloy containing Zn 0.50 wt.% showed the highest SCC resistance.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Alloy No. | Zn | Mg | Mn | Cr | Si | Fe | Al |
---|---|---|---|---|---|---|---|
1 | 0.00 | 4.47 | 0.70 | 0.152 | <0.002 | <0.02 | Bal. |
2 | 0.25 | 4.50 | 0.70 | 0.152 | <0.002 | <0.02 | Bal. |
3 | 0.50 | 4.48 | 0.71 | 0.146 | <0.002 | <0.02 | Bal. |
4 | 0.75 | 4.49 | 0.68 | 0.151 | <0.002 | <0.02 | Bal. |
0.00 wt.% Zn | 0.25% wt. Zn | 0.50% wt. Zn | 0.75% wt. Zn | |
---|---|---|---|---|
Matrix | 319 ± 8 | 316 ± 10 | 338 ± 11 | 335 ± 15 |
300 mm/min, 1000 rpm | 293 ± 5 | 300 ± 7 | 300 ± 5 | 300 ± 10 |
300 mm/min, 1500 rpm | 299 ± 10 | 280 ± 12 | 295 ± 9 | 302 ± 13 |
300 mm/min, 600 rpm | 295 ± 6 | 296 ± 10 | 300 ± 7 | 306 ± 8 |
Zn, wt.% | Strength, MPa | Elongation, % | Breaking Time, h | |||
---|---|---|---|---|---|---|
In Air | In NaCl | In Air | In NaCl | In Air | In NaCl | |
0 | 310 ± 8 | 301 ± 14 | 35 ± 4 | 15 ± 5 | 147 ± 15 | 81 ± 10 |
0.25 | 307 ± 10 | 298 ± 16 | 49 ± 6 | 19 ± 6 | 161 ± 18 | 96 ± 8 |
0.50 | 330 ± 6 | 323 ± 10 | 44 ± 5 | 34 ± 5 | 156 ± 13 | 130 ± 10 |
0.75 | 328 ± 12 | 297 ± 15 | 47 ± 8 | 18 ± 8 | 172 ± 19 | 88 ± 11 |
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Zhu, Z.; Lang, Z.; Xu, M.; Nie, P.; Jiang, X.; Hu, F.; Lin, Y. Correlation between Microstructures and Tensile Properties in Friction Stir Welding Joint of Zn-Modified 5083 Al Alloy. Metals 2022, 12, 1234. https://doi.org/10.3390/met12071234
Zhu Z, Lang Z, Xu M, Nie P, Jiang X, Hu F, Lin Y. Correlation between Microstructures and Tensile Properties in Friction Stir Welding Joint of Zn-Modified 5083 Al Alloy. Metals. 2022; 12(7):1234. https://doi.org/10.3390/met12071234
Chicago/Turabian StyleZhu, Zhixiong, Zongling Lang, Meng Xu, Pan Nie, Xingxu Jiang, Fengfeng Hu, and Yongyong Lin. 2022. "Correlation between Microstructures and Tensile Properties in Friction Stir Welding Joint of Zn-Modified 5083 Al Alloy" Metals 12, no. 7: 1234. https://doi.org/10.3390/met12071234