Unravelling the effect of temperature and humidity alternation on 6061 aluminium alloy corrosion behaviour in simulated urban industrial environment

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2024-12-26 DOI:10.1007/s42114-024-01178-w

Xiao-lei Liu, Jianwen Jia, Hua-yun Du, Li-feng Hou, Qian Wang, Hong-wei He, Huan Wei, Xiao-da Liu, Yan Zhou, Yi-bin Gao, Ying-hui Wei

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引用次数: 0

Abstract

The effect of temperature and humidity alternation on the corrosion behaviour and mechanical properties of 6061 aluminium alloy in a simulated urban industrial atmospheric environment was investigated and analysed by weightlessness method, scanning electron microscope (SEM), energy dispersive spectrometer (EDS), Fourier infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and dynamic potential polarization (LSV). The fluctuation of the composition, structure, and morphology of the corrosion product layer is studied; the entry of corrosive medium destroys the densification; and the second phase brings the potential difference, which causes the corrosion to expand internally and accelerates the localized corrosion. The corrosion rate shows a trend of first gradually increasing and then decreasing, corresponding to the formation of the initial oxide film hinders the corrosion, and then the local product film separation leads to the weakening of the corrosion resistance. The mechanical properties are significantly reduced after corrosion, and the fracture mechanism is transformed from the ductile fracture to the cleavage fracture gradually. This study also provided some theoretical guidance for the accelerated simulation tests of Al alloys in the marine atmosphere.

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模拟城市工业环境中温度和湿度变化对6061铝合金腐蚀行为的影响

采用失重法、扫描电镜（SEM）、能谱仪（EDS）、傅里叶红外光谱（FT-IR）、x射线衍射（XRD）和动态电位极化（LSV）等方法，研究了温度和湿度变化对6061铝合金在模拟城市工业大气环境中的腐蚀行为和力学性能的影响。研究了腐蚀产物层的组成、结构和形貌的变化规律；腐蚀介质的进入破坏了致密化；第二相产生电位差，使腐蚀向内部扩展，加速局部腐蚀。腐蚀速率呈现先逐渐增大后减小的趋势，对应于初始氧化膜的形成阻碍了腐蚀，然后局部产物膜的分离导致耐蚀性减弱。腐蚀后材料的力学性能显著降低，断裂机制逐渐由韧性断裂向解理断裂转变。该研究为海洋大气中铝合金的加速模拟试验提供了一定的理论指导。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.