Influence of the Friction Stir Welding-Traveling Speed on the Corrosion Properties of Mg-5Al Alloy

Vương, Bùi Xuân; Anh, Hà Tuấn; Nhàn, Nguyễn Thị Thanh; Xuan, Huang; Nguyen, D. C.; Nam, Nguyễn Đăng

doi:10.1007/s11665-017-2803-7

Cited by 15 publications

(6 citation statements)

References 59 publications

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“…Correlatively, XPS measurement indicated that the sturdy passive lm was formed on Sr-containing alloy surfaces with a mixture of oxides/hydroxides from the enriched alloy components, including mainly Mg, Al and Sn products, suggesting an improved corrosion resistance. [54][55][56] Potentiodynamic and potentiostatic polarisation results indicated that the pitting potential, passive potential range and passive stability increased with an increase in the addition of Sr, contributing to the smaller a-Mg grain size, higher density and more continuous precipitates along the grain boundaries, as well as the uniform contribution of alloy elements to the microstructure. As shown in the microstructure analysis, the larger a-Mg grain sizes and sparse and discontinuous precipitates observed on the Mg-5Al-4Sn-based alloy could cause some major gaps between a-Mg and the precipitates, building up the microgalvanic cells that could create good conditions for corrosion initiation and easily develop to force Mg dissolution later on.…”

Section: Resultsmentioning

confidence: 99%

The role of alloyed strontium in the microstructures and alkaline electrochemistry of Mg–5Al–4Sn alloys

Binh

Lal

et al. 2020

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

The role of alloyed strontium in the microstructures and alkaline electrochemistry of Mg–5Al–4Sn alloys

Binh

Lal

et al. 2020

RSC Adv.

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“…As is known, precipitate particles, grain boundaries, and residual stresses are key factors affecting the corrosion resistance of Mg alloys . The corrosion behavior of Mg–Al alloys depends on the size and distribution of precipitate particles .…”

Section: Discussionmentioning

confidence: 99%

“…Savguira et al found that dissimilar welding of Mg alloys by FSW would present a worse corrosion resistance compared to a similar joint. Vuong et al suggested that an increase in the traveling speed can result in a significant improvement in the corrosion resistance of Mg alloys during FSP.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of corrosion resistance of multipass friction stir processed AZ31 magnesium alloy

Liu

Shen

Tang

et al. 2019

Materials & Corrosion

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Multipass friction stir processing (FSP) is an effective method to produce a homogeneous microstructure and enhance the mechanical properties of magnesium (Mg) alloys. However, few studies have concentrated on the variation of corrosion resistance of Mg alloys during multipass FSP. Electrochemical alternating current (AC) impedance, polarization behavior, hydrogen evolution, and corrosion morphology were used to investigate the effects of subsequent passes on the corrosion resistance of FSP AZ31 plates. A quasi‐in‐situ observation of the growth of corrosion products was carried out to further study the corrosion behaviors of FSP AZ31 alloy. It is found that subsequent passes could further reduce the grain size of FSP AZ31 alloy and result in an increase in the hardness compared with the first pass. Moreover, subsequent passes are beneficial to the improvement in the corrosion resistance of AZ31 alloy. Pitting corrosion occurs in FSP AZ31 plates, which has not changed after subsequent passes.

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“…The results are consistent with many published studies that the corrosion resistance of Mg alloys can be enhanced by FSW. [18,[37][38][39] Moreover, the FSW-C sample has the worst corrosion resistance, meaning that the postweld compression is harmful to the corrosion resistance of FSW AZ31 alloys. significant differences in the results of mass loss are observed in various AZ31 samples.…”

Section: Microstructures and Hardnessmentioning

confidence: 99%

Corrosion behavior of friction stir‐welded AZ31 Mg alloy after plastic deformation

Liu

Zhang

et al. 2021

Materials & Corrosion

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Postweld plastic deformation was reported to be able to largely enhance the mechanical properties of friction stir‐welded (FSW) Mg alloys by changing microstructures in the regions with a soft‐oriented texture. However, few studies have concentrated on the effects of postweld plastic deformations on the corrosion behavior of FSW Mg alloys, which has an impact on their application. In the present study, electrochemical measurements, hydrogen evolution, and mass loss tests were used to study the influences of postweld compression along the transverse direction and subsequent annealing on the corrosion rate of FSW AZ31 Mg alloys. It was found that owing to the grain refinement in the weld zones, an improvement in the corrosion resistance and hardness was observed in the FSW AZ31 sample compared to the base metal (BM) sample. Postweld compression was very harmful to the corrosion resistance of the FSW AZ31 alloys. On the basis of the mass loss results, the corrosion rate of the compressed FSW sample was ~17.62 mm/year, which was ~8.99 times that of the FSW sample (~1.96 mm/year). Subsequent annealing could slightly reduce the corrosion rate of the compressed FSW AZ31 plates, whereas the corrosion rate of the FSW‐C‐T sample (~13.63 mm/year) was much worse than that of the BM sample (~4.73 mm/year).

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Influence of the Friction Stir Welding-Traveling Speed on the Corrosion Properties of Mg-5Al Alloy

Cited by 15 publications

References 59 publications

The role of alloyed strontium in the microstructures and alkaline electrochemistry of Mg–5Al–4Sn alloys

The role of alloyed strontium in the microstructures and alkaline electrochemistry of Mg–5Al–4Sn alloys

Evaluation of corrosion resistance of multipass friction stir processed AZ31 magnesium alloy

Corrosion behavior of friction stir‐welded AZ31 Mg alloy after plastic deformation

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