Microstructure, Chemical Composition and Local Corrosion Behavior of a Friction Stud Welding Joint

Ma, Huijuan; Gu, Yanhong; Gao, Hui; Jiao, Xiangdong; Juntie, Che; Zeng, Qunfeng

doi:10.1007/s11665-018-3182-4

Cited by 14 publications

(9 citation statements)

References 34 publications

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“…The LEIS maps were measured with 10 μA current amplitude and 10 Hz frequency. We chose the 10 Hz single frequency because the curve of impedance vs. frequency was at the logarithm frequency interval of 10 Hz frequency, which is beneficial to the stable testing and resistance to the disturbance (Liu J. et al, 2018; Ma et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

Bacillus subtilis Inhibits Vibrio natriegens-Induced Corrosion via Biomineralization in Seawater

et al. 2019

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The marine bacterium, Vibrio natriegens , grows quickly in a marine environment and can significantly accelerate the corrosion of steel materials. Here, we present an approach to inhibit V. natriegens -induced corrosion by biomineralization. The corrosion of steel is mitigated in seawater via the formation of a biomineralized film induced by Bacillus subtilis . The film is composed of extracellular polymeric substances (EPS) and calcite, exhibiting stable anti-corrosion activity. The microbial diversity and medium chemistry tests demonstrated that the inhibition of V. natriegens growth by B. subtilis was essential for the formation of the biomineralized film.

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Section: Methodsmentioning

confidence: 99%

Bacillus subtilis Inhibits Vibrio natriegens-Induced Corrosion via Biomineralization in Seawater

et al. 2019

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“…It can also be seen from Figure 4 that the changing trend of U-HAZ hardness value is steeper than the decreasing trend of L-HAZ hardness value. In the HAZ near BMZ, the decrease of micro-hardness is attributed to the increase of grain size due to the absorption of heat input by solution cooling (Ma et al, 2018). In addition, SZ generates higher heat during rotation, which increases the local temperature of the material surface.…”

Section: Hardness Analysis Of Fsw Jointmentioning

confidence: 99%

“…In recent years, with the development of offshore oil industry, the importance of underwater welding technology of steel structure in the submarine pipeline is becoming more and more prominent (Shen et al, 2019). The friction stud welding (FSW) method has many advantages (Yin et al, 2016;Ma et al, 2018), such as high efficiency, low material consumption, and non-pollution. Therefore, this method has been developing rapidly in the underwater application (Zhang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Sidane et al (2015) studied the local corrosion behavior of friction stir welding joint by using LEIS technology, so as to better solve the regional corrosion problem of the joint. Ma et al (2018) pointed out that there are the largest impedance in the welded zone (WZ) compared with other zones, thus showing the excellent corrosion resistance in the WZ. Nevertheless, the research on the local corrosion behavior of the underwater FSW joints by these two testing techniques has not been reported.…”

Section: Introductionmentioning

confidence: 99%

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Probing the Anti-Corrosion Behavior of X65 Steel Underwater FSW Joint in Simulated Seawater

Gao

Sun

et al. 2022

Front. Mater.

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To detect the corrosion resistance of a friction stud welding (FSW) joint in simulated seawater (a 3.5 wt% NaCl solution), the pulse electrochemical deposition method was used for electroplating Ni coating with different duty ratios (50%, 80%, and 100%) on the surface of FSW joint. The microstructure and surface structure of the coating were observed by micro-spectroscopy and other characterization methods. The corrosion behavior of the coating was analyzed by means of macroscopic electrochemical testing. The local corrosion law of joint surface and coating surface defects were innovatively explored by using micro-zone electrochemical scanning system. The coating characterization results showed that, as the duty ratio continues to increase, the coating surface becomes denser and smoother, and the corrosion products such as Fe2O3, Fe3O4, and FeOOH are generated. The results of macroscopic electrochemical experiment indicated that the coating with 100% duty ratio has the lowest corrosion current density and the maximum polarization resistance. The scanning vibrating electrode technique results showed that the corrosion current density in the defect area is higher than that in the coating area, and the maximum corrosion current density decreases with the increase of duty ratio. The localized electrochemical impedance spectroscopy results indicated that the localized impedance at the welded zone was the largest, and with the increase of the pulse duty ratio, the impedance diffusion in the defect area was decreasing.

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“…The formation and development of stress corrosion cracking were explained. Ma et al used SVET to investigate the localized corrosion behaviors of the welded joint [18]. They discovered that there were the maximum microhardness and the densest microstructure in the welded zone compared with the other zones.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Welded Joint of Q690 with CMT Twin

Liu

Han

et al. 2018

International Journal of Corrosion

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Low alloy steel of Q690 was welded with the method of CMT Twin. The corrosion behavior of welded joint had been investigated using scanning vibrating electrode technique (SVET) in 3.5% NaCl solution. The research results showed that the appearance of the troostite increased the hardness of the heat affected zone. Furthermore, the corrosion products of different microstructure were identical, and the white products (Fe(OH)2) of welded joint turned into products of rufous (Fe(OH)3). The quantitative information provided by SVET was discussed, and the corrosion degree was measured by some parameters. In comparison with other areas, the corrosion rates of the overheated zone and the base metal were higher. Then, the corrosion resistance of the weld zone with CMT Twin was greatly improved, when compared with that of the base metal. Therefore, Ni has significant influence on corrosion resistance of weld zone. In summary, it can be discovered that the corrosion rates of various zones were related to the welding heat input.

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Microstructure, Chemical Composition and Local Corrosion Behavior of a Friction Stud Welding Joint

Cited by 14 publications

References 34 publications

Bacillus subtilis Inhibits Vibrio natriegens-Induced Corrosion via Biomineralization in Seawater

Bacillus subtilis Inhibits Vibrio natriegens-Induced Corrosion via Biomineralization in Seawater

Probing the Anti-Corrosion Behavior of X65 Steel Underwater FSW Joint in Simulated Seawater

Corrosion Behavior of Welded Joint of Q690 with CMT Twin

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