Corrosion Behavior of SMA490BW Steel and Welded Joints for High-Speed Trains in Atmospheric Environments

Wu, Xiaofang; Zhang, Zhiyi; Qi, Weichuang; Tian, Renyong; Huang, Shiming; Shi, Chunyuan

doi:10.3390/ma12183043

Cited by 6 publications

(3 citation statements)

References 32 publications

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“…This can block the penetration of the corrosive medium and slow the weathering of the steel, thereby reducing its corrosion rate. Therefore, when the weathering steel is in an industrial environment, the corrosion rate is as shown in figure 3(b), and the corrosion rate increases during the early stage, and the corrosion rate decreases during the later stage [35].…”

Section: Corrosion Dynamicsmentioning

confidence: 99%

Experimental design of Cu content in weathering resistance steel for industrial atmosphere application

Yan

Guo

et al. 2020

Mater. Res. Express

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In this paper, the effect of sulfur dioxide (SO 2 ) on the corrosion behavior of weathering steel with different copper (Cu) contents in a simulated industrial environment was studied. The results showed that the corrosion occurred in three distinct stages with the corrosion kinetics characterized via the parameter of 'n'. For the first and second stage with n>1 and n<1, the corrosion of weathering steel was accelerated and reduced, respectively. The third stage witnessed the minimum value of n, indicating a lowest corrosion rate. As the Cu content increased from 0.15% to 0.50%, the corrosion weight gained and corrosion rate remarkably decreased. In contrast, when the Cu contents increased from 0.50% to 0.70%, the corrosion rate began to slightly decrease. With the Cu addition, the stable α-FeOOH phase in the rust layer was refined, which increased the electrochemical impedance accordingly lowered the electrochemical reaction rate and ultimately enhanced the corrosion resistance. In this work, we have studied the corrosion mechanism of Cu element on the weathering steel in the industrial atmosphere, and studied the effect of Cu content on the corrosion resistance of weathering steel. The research shows that the content of the effect is not great, so the recommended amount of Cu in weathering steel is not more than 0.50%.

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Section: Corrosion Dynamicsmentioning

confidence: 99%

Experimental design of Cu content in weathering resistance steel for industrial atmosphere application

Yan

Guo

et al. 2020

Mater. Res. Express

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“…Simultaneously, the grain refinement and work-hardening effects after ultrasonic treatment led to an increase in surface microhardness. Wu et al [7] studied the corrosion behavior of SMA490BW used for high-speed train bogies and its welded joints using a periodic wet/dry cycle corrosion test simulating an industrial atmospheric environment. The results show that the corrosion weight loss rate decreased with an increase in the corrosion time.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Crack Propagation Behavior and Life Prediction of Welded Joints of SMA490BW Steel for Bogies

Xie

Zhou

et al. 2023

Processes

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In this paper, the precrack propagation behavior of an SMA490BW welded joint in the core zone and heat-affected zone was analyzed through experiments based on the FRANC 3D and ABAQUS cosimulation method, and life prediction of these cracks was also investigated. The results show that the experimental crack propagation path and crack propagation rate in the weld core zone and heat-affected zone agree well with the simulation results, with a small relative error. The life span of the prefabricated crack in the heat-affected zone was higher than that in the core zone. Furthermore, regarding the life prediction results for the two samples, the relative error obtained using FRANC 3D was about 5%, which was verified using the method of joint simulation of crack propagation behavior in the zone simulation and their life prediction with accurate feasibility.

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“…However, aluminum alloy structures may be damaged due to wear or corrosion when they are in service in harsh and complex environments. For example, the car bodies of high-speed trains made from aluminum alloys may suffer from corrosion and aging in complex atmospheric environments [1][2][3]. In addition, the car bodies may be partially injured under the impact of external forces, such as scratches, pits, and laceration.…”

Section: Introductionmentioning

confidence: 99%

A Repair Method for Damage in Aluminum Alloy Structures with the Cold Spray Process

Han

Sun

et al. 2021

Materials

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Aluminum alloy structures may be damaged due to wear or corrosion while in service. These damages will bring about huge financial costs, as well as a huge amount of energy consumption. There is an urgent need to search for an appropriate repair method in order to solve this problem. In this research, the cold spray process was used to repair the damages by using a mixture of powders with Al and Al2O3. A 7N01-T4 aluminum alloy plate with a factitious pit was regarded as the damaged sample. The microstructure, mechanical properties, and corrosion behavior were studied. The results showed that there were no visible perforative pores or cracks in the repaired areas. The microhardness of the repaired areas was in the range of 57.4–63.2 HV and was lower than that of the 7N01-T4 aluminum alloy. The tensile strength of the repaired samples was markedly improved compared with the unrepaired samples. The alternate immersion test results indicated that the repaired samples had the lowest rate of mass loss compared with 7N01-T4 and the unrepaired samples. After alternate immersion tests for 504 h, the repaired samples were covered with dense corrosion products. The repaired samples had a superior corrosion resistance compared to that of 7N01-T4. Thus, the cold spray process is a method of repairing damage in aluminum alloy structures.

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Corrosion Behavior of SMA490BW Steel and Welded Joints for High-Speed Trains in Atmospheric Environments

Cited by 6 publications

References 32 publications

Experimental design of Cu content in weathering resistance steel for industrial atmosphere application

Experimental design of Cu content in weathering resistance steel for industrial atmosphere application

Fatigue Crack Propagation Behavior and Life Prediction of Welded Joints of SMA490BW Steel for Bogies

A Repair Method for Damage in Aluminum Alloy Structures with the Cold Spray Process

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