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Kinetics of Laser Surface Engineering of Three Aluminum Alloys
Published in T. S. Srivatsan, T. S. Sudarshan, K. Manigandan, Manufacturing Techniques for Materials, 2018
Sourabh Biswas, Sandip P. Harimkar
The 2024 aluminum alloy, with copper as its primary alloying element, is one of the most popular and earliest developed aluminum alloy. The chemical composition of this alloy is given in Table 10.2 [4]. The 2024 alloy is age hardened, and distinct phases such as GP zone I, GP zone II, θ′, and equilibrium θ have been identified to precipitate during the age hardening treatment depending on both treatment temperature and time. Although this alloy exhibits comparatively high tensile strength as observed from Table 10.2 [4], it is reported to be susceptible to pitting corrosion.
The research status and prospect of cryogenic treatment on aluminum alloys
Published in Yigang He, Xue Qing, Automatic Control, Mechatronics and Industrial Engineering, 2019
The 2014 aluminum alloy has high strength and hardness, good plasticity and toughness as well as good forging, heat resistance and weldability, so it has been well applied in the aerospace field. With the rapid development of high-speed railway in recent years, 2014 aluminum alloy is often used in various parts of this industry. However, the service life of the parts is reduced because of its low corrosion resistance, which limits the range of the engineering application to varying degrees. To improve these shortcomings, Xu et al. (2014) studied 12 kinds of composite processes including cryogenic treatment; they discovered two important processes. One of them was that a solid solution treatment for 80 mins at 505°C with water cooling, plus a cryogenic treatment holding for 20h, followed by an aging treatment for 12h at 160°C. The second was a solid solution treatment for 80 mins at 505°C, water cooling plus an aging treatment for 12h at 120°C, followed by a regression treatment for 15 mins at 200°C, water cooling and an aging treatment for 12h at 160°C. The first process dealt with cryogenic treatment after water cooling, and when compared to the second process without cryogenic treatment, the hardness and corrosion resistance of the aluminum alloy was significantly improved. In addition to high strength and good heat resistance, 2024 aluminum alloy also has the advantages of low density. Therefore, it is often used for the structural parts of aircraft, such as covering, skeleton, rib beam and partition frame. The study by Wang et al. (2012) showed that 2024 aluminum alloy after cryogenic treatment not only reduced the residual stress of quenching and promoted the second phase precipitation, but also significantly improved fatigue and corrosion resistance performance.
Effect of ultrasonic impact treatment on corrosion fatigue performance of friction stir welded 2024-T4 aluminum alloy
Published in Corrosion Engineering, Science and Technology, 2022
Binghan Huang, Lei Wang, Xiaopeng Liu, Li Hui, Jiahui Cong, Song Zhou
The surface morphology of the samples in a 3.5% NaCl solution with different lengths of corrosion time is presented in Figure 9. Copper (Cu) is an important element in 2024 aluminium alloy. Cu exhibits high solubility in the matrix and exerts a good solid-solution strengthening effect. This element is the main component of the main strengthening phase S (CuMgAl2) and phase θ (Al2Cu) of 2024 aluminium alloy, which significantly enhances the strength of the material [18].
Effect of nanocomposites rate on the crack propagation in the adhesive of single lap joint subjected to tension
Published in Mechanics of Advanced Materials and Structures, 2023
Hadj Boulenouar Rachid, Djebbar Noureddine, Boutabout Benali, Mehmet Şükrü Adin
The 2024 aluminum alloy is used extensively in aeronautics, and it has a maximum aluminum percentage of about 93% and has copper as the main addition element: this is the characteristic of aluminum alloys from 2000 series. It is mainly used in the aircraft and automotive industries. The mechanical characteristics usually attributed to this alloy are presented in Table 1 [14, 30]. A stress/strain curve characteristic of these tests is shown in Figure 2.