Study of Hydrogen-Induced Plastic Damage Response of 7085-T7651 High-Strength Aluminum Alloy
Abstract
:1. Introduction
2. Experimental Procedure
2.1. Materials
2.2. Pre-Charge Hydrogen
2.3. Plastic Loss Behavior
3. Results and Discussion
3.1. Hydrogen-Induced Plastic Damage
3.2. Section Analysis
3.3. Hardness Analysis
3.4. Hydrogen Analysis
3.5. Mechanism Analysis
4. Conclusions
- (1)
- 7085-T7651 high-strength aluminum alloy has a certain hydrogen-absorption capacity, which might cause hydrogen-induced plastic damage behavior in the service process.
- (2)
- The hydrogen-induced plastic damage behavior of the 7085-T7651 high-strength aluminum alloy is mainly characterized by intergranular fracture, which is due to the formation of Mg and H segregation formed at grain boundaries, leading to the embrittlement of the material.
- (3)
- Hydrogen-induced plastic damage and hydrogen-induced cracking behavior of 7085-T7651 high-strength aluminum alloy can be intuitively and quantitatively characterized using the TOF-SIMS method.
- (4)
- To further understand the effect of hydrogen on high-strength aluminum alloy, we will continue to research the characterization technology of micro–nano structures and the distribution of hydrogen at the crystal boundary.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Sample No. | Hydrogen Content (ppm) | Properties | |
---|---|---|---|
Rm (MPa) | A (%) | ||
1 | 0.8, 1.3, 1.1 (σ: 0.25) | 444, 448, 443 (σ: 2.65) | 5.2, 5.0, 4.5 (σ: 0.36) |
2 | 2.8, 3.1, 3.3 (σ: 0.25) | 472, 465, 470(σ: 3.61) | 2.6, 2.9, 3.2 (σ: 0.30) |
3 | 5.4, 5.1, 5.2 (σ: 0.15) | 475, 478, 478(σ: 1.73) | 2.1, 1.5, 1.7(σ: 0.31) |
4 | 5.6, 6.1, 6.0 (σ: 0.26) | 488, 472, 477(σ: 8.19) | 1.0, 0.8, 1.2 (σ: 0.20) |
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Yang, X.; Zhang, X.; Chen, J.; Wang, Z.; Li, X.; Zhang, X.; Gao, L. Study of Hydrogen-Induced Plastic Damage Response of 7085-T7651 High-Strength Aluminum Alloy. Metals 2023, 13, 40. https://doi.org/10.3390/met13010040
Yang X, Zhang X, Chen J, Wang Z, Li X, Zhang X, Gao L. Study of Hydrogen-Induced Plastic Damage Response of 7085-T7651 High-Strength Aluminum Alloy. Metals. 2023; 13(1):40. https://doi.org/10.3390/met13010040
Chicago/Turabian StyleYang, Xiao, Xianfeng Zhang, Jieming Chen, Zhenzhong Wang, Xuefeng Li, Xinyao Zhang, and Lingqing Gao. 2023. "Study of Hydrogen-Induced Plastic Damage Response of 7085-T7651 High-Strength Aluminum Alloy" Metals 13, no. 1: 40. https://doi.org/10.3390/met13010040