Effect of Sm on the microstructure and properties of Mg-9Al alloy

Hu, Yong; Yang, Nan; Zhao, Longzhi; Chen, Ganggang

doi:10.1080/13640461.2017.1292891

Cited by 10 publications

(4 citation statements)

References 11 publications

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“…Figure 10 showed various Mg alloys' EL and corrosion rate (in NaCl solutions). [64][65][66][67][68][69][70][71][72][73][74] Although the Mg-Gd-Zn alloys prepared by Srinivasan et al 72 showed a relative fast corrosion rate about 30 mm•y −1 , the EL was not acceptable. In contrast, in spite of better EL shown in Mg-Li-Al(-Ca) alloys (bigger than 15%), 74 the corrosion rates were relatively slower.…”

Section: Discussionmentioning

confidence: 99%

“…All the Mg-2Gd-xCu alloys exhibited characteristics of local corrosion but alloys containing more Cu were corroded more seriously due to the profuse Mg 2 Cu, refined grain size, and much weaker rare earth texture. 64 Mg-Dy, 69 Mg-Gd-Zn, 72 Mg-Zn-Zr(-La), 66 Mg-Al-Zn, 68 Mg-Zn-Mn(-Ca), 73 Mg-Zn-La, 70 Mg-Li-Al-Zn-Nd-Zr, 71 Mg-Y-Nd, 65 Mg-Li-Al(-Ca), 74 Mg-Gd-Ni 13 and Mg-Gd(-Cu) in this work.…”

Section: Discussionmentioning

confidence: 99%

“…Figure10. EL and corrosion rate of different Mg alloys: Mg-Al(−Sm),64 Mg-Dy,69 Mg-Gd-Zn,72 Mg-Zn-Zr(-La),66 Mg-Al-Zn, 68 Mg-Zn-Mn(-Ca),73 Mg-Zn-La,70 Mg-Li-Al-Zn-Nd-Zr,71 Mg-Y-Nd,65 Mg-Li-Al(-Ca),74 Mg-Gd-Ni13 and Mg-Gd(-Cu) in this work.…”

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confidence: 99%

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Enhanced Degradability of Mg-2Gd Alloy by Alloying Cu

Zhong¹,

Xu²,

Zhou³

et al. 2021

J. Electrochem. Soc.

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To obtain alloys with both high degradability and plasticity used in the petroleum industry, 0.25, 0.5, 0.75 and 1.0 wt.% Cu were added into Mg-2Gd alloy. With Cu addition, finer grain size, precipitation of Mg2Cu, and variations of crystal orientation were observed. Regardless of the good mechanical properties gained by alloying Cu, the degradation rate was obviously increased in this study. The corrosion rate and I corr of Mg-2Gd were 13.0 ± 0.1 mm·y−1 and 1.04 × 10−4 A·cm−2, respectively, while those value of Mg-2Gd-1Cu increased to 226.4 ± 6.1 mm·y−1 and 3.42 × 10−4 A·cm−2, respectively. We confirmed by scanning Kelvin probe force microscopy and scanning electron microscope with electron backscatter diffraction detector that profuse second phases (mainly Mg2Cu), refinement of grain size, and weakened rare earth texture contributed to the lower corrosion resistance.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced Degradability of Mg-2Gd Alloy by Alloying Cu

Zhong¹,

Xu²,

Zhou³

et al. 2021

J. Electrochem. Soc.

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“…Therefore, people are attempting to use Mg alloys to fabricate the temporarily sealing tools. 12,[15][16][17] In previous investigations, researchers have designed Mg alloys with different corrosion rates through alloying, such as Mg-Al(-Sm), 18 Mg-Dy, 19 Mg-Gd-Zn, 20 Mg-Zn-Zr(-La), 21 Mg-Al-Zn, 22 Mg-Zn-Mn(-Ca), 23 Mg-Zn-La 24 and Mg-Y-Nd. 25 However, those Mg alloys were not quite suitable for the application in the field of oil and gas exploitation, because they hardly showed the characteristics of high corrosion rates and high plasticity at the same time.…”

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confidence: 99%

Modified Microstructures and Corrosion Behaviors of Mg-Gd-Cu Alloys through Annealing Treatment

Zhong

Chai

et al. 2021

J. Electrochem. Soc.

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Corrosion rates of ideal Mg alloys used for sealing tools in petroleum industry should be able to be altered to adapt to different downhole environments, and corresponding mechanisms of modified corrosion rates need to be clarified. In this study, annealing treatments were carried out at 400 or 450 °C for 2 h to tune the microstructures and corrosion rates of Mg-2Gd-xCu (x = 0, 0.5 and 1 wt.%). Microstructures were characterized by scanning electron microscope, X-ray diffractometer and electron backscatter diffraction while corrosion behaviors were investigated by immersion and electrochemical tests. The results showed that after annealing, the growth in the average second phase size and the average grain size, the weakened basal texture and the eliminated residual stress contributed to reduced corrosion rates. As a result, corrosion rates of Mg-2Gd-0.5Cu and Mg-2Gd-1Cu decreased obviously but were still higher than 30 mm·y−1 after annealing, the recommended minimum corrosion rates. It proved that a gradient of corrosion rates of Mg-Gd-Cu can be achieved through annealing treatment, which were beneficial to further application of Mg-Gd-Cu in the field of oil and gas exploitation.

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Effect of Ho Content and Heat Treatment on the Corrosion Resistance of Mg-xHo-3Sm-0.5Zr Alloy

Leng

Chen

et al. 2022

J. of Materi Eng and Perform

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Effect of Sm on the microstructure and properties of Mg-9Al alloy

Cited by 10 publications

References 11 publications

Enhanced Degradability of Mg-2Gd Alloy by Alloying Cu

Enhanced Degradability of Mg-2Gd Alloy by Alloying Cu

Modified Microstructures and Corrosion Behaviors of Mg-Gd-Cu Alloys through Annealing Treatment

Effect of Ho Content and Heat Treatment on the Corrosion Resistance of Mg-xHo-3Sm-0.5Zr Alloy

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