Influence of specific second phases on corrosion behaviors of Mg-Zn-Gd-Zr alloys

Yin, Siqi; Duan, Wenchao; Liu, Wenhong; Wu, Liang; Yu, Jingyi; Zhao, Zilong; Liu, Min; Wang, Ping; Chen, Jianzhong; Zhang, Zhiqiang

doi:10.1016/j.corsci.2019.108419

Cited by 209 publications

(54 citation statements)

References 61 publications

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“…[ 38 ] Generally, the cathodic branch and the anodic branch represented cathodic HER and the dissolution reaction of Mg matrix, respectively. [ 39 ] The cathodic polarization behavior of the alloys was similar. The slope of the cathodic polarization curve ( β c ) of alloy C was relatively lower than the others.…”

Section: Resultsmentioning

confidence: 93%

Effect of Microalloyed Al on Microstructure and Corrosion Behaviors of As‐Cast Mg–Zn–Y–Mn Alloys

Zhang

Zhao

et al. 2020

Adv Eng Mater

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The effect of Al microalloying on microstructure and corrosion behaviors of as‐cast Mg–6Zn–8.16Y–2.02Mn is investigated. Microstructural characterization reveals that Al addition can refine grain and lead to the formation of Al(Y, Zn) phase. When a 0.3 wt% Al is added, the alloy exhibits the lowest weight loss rate of 0.99 mm/Y and displays relatively uniform corrosion morphology. However, alloys with more Al addition present localized corrosion on the surface. It results from more W phase (Mg3Zn3Y2) and a little long‐period stacking order (LPSO) phase along the grain boundary. Electrochemical tests are also used to rationalize the corrosion behaviors observed in weight loss. In conclusion, the decrease in corrosion rate is due to grain refinement, optimal quantification of Al(Y, Zn) with short‐rod shape and LPSO phase.

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Section: Resultsmentioning

confidence: 93%

Effect of Microalloyed Al on Microstructure and Corrosion Behaviors of As‐Cast Mg–Zn–Y–Mn Alloys

Zhang

Zhao

et al. 2020

Adv Eng Mater

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Section: Introductionmentioning

confidence: 99%

“…According to the literature search, current studies of Mg alloys are mainly focused on improving a single property [7][8][9][10][11][12][13][14][15]. For instance, many Mg alloys with high strength but low ductility (or with high ductility but low strength) have been reported [7][8][10][11]. At present, many researchers have investigated the strength-ductility trade-off [16][17][18][19][20] and reported some Mg alloys with relatively high strength and high ductility [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Toward the development of Mg alloys with simultaneously improved strength and ductility by refining grain size via the deformation process

Zhang

Wang

et al. 2020

Int J Miner Metall Mater

135

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Magnesium (Mg) alloys, as the lightest metal engineering materials, have broad application prospects. However, the strength and ductility of traditional Mg alloys are still relativity low and difficult to improve simultaneously. Refining grain size via the deformation process based on the grain boundary strengthening and the transition of deformation mechanisms is one of the feasible strategies to prepare Mg alloys with high strength and high ductility. In this review, the effects of grain size on the strength and ductility of Mg alloys are summarized, and fine-grained Mg alloys with high strength and high ductility developed by various severe plastic deformation technologies and improved traditional deformation technologies are introduced. Although some achievements have been made, the effects of grain size on various Mg alloys are rarely discussed systematically and some key mechanisms are unclear or lack direct microscopic evidence. This review can be used as a reference for further development of high-performance fine-grained Mg alloys.

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“…The development and application of high-strength and light-weight metallic materials have received much attention in recent years owing to the increasing concerns of world environmental issues, such as air pollution, energy overconsumption, resource shortage, etc. Among various light-weight metallic materials, magnesium and its alloys exhibit great potential because of their low density, high specific strength and stiffness, good machinability, and so on, which were therefore considered as the next generation of green engineering structural materials [1][2][3][4][5]. Nevertheless, the absolute strength and elasticity modulus of magnesium alloys are relatively low, which could not meet the requirements of practical applications [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Necklace-Type Distribution of SiC Particles on Dry Sliding Wear Behavior of As-Cast AZ91D/SiCp Composites

Sun

Liu

et al. 2020

Crystals

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In this study, the dry sliding wear behaviors of SiC particle reinforced AZ91D matrix composites fabricated by stirring casting method were systematically investigated. The SiC particles in as-cast composites exhibited typical necklace-type distribution, which caused the weak interface bonding between SiC particles and matrix in particle-segregated zones. During dry sliding at higher applied loads, SiC particles were easy to debond from the matrix, which accelerated the wear rates of the composites. While at the lower load of 10 N, the presence of SiC particles improved the wear resistance. Moreover, the necklace-type distribution became more evident with the decrease of particle sizes and the increase of SiC volume fractions. Larger particles had better interface bonding with the matrix, which could delay the transition of wear mechanism from oxidation to delamination. Therefore, composites reinforced by larger SiC particles exhibited higher wear resistance. Similarly, owing to more weak interfaces in the composites with high content of SiC particles, more severe delamination occurred and the wear resistance of the composites was impaired.

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Influence of specific second phases on corrosion behaviors of Mg-Zn-Gd-Zr alloys

Cited by 209 publications

References 61 publications

Effect of Microalloyed Al on Microstructure and Corrosion Behaviors of As‐Cast Mg–Zn–Y–Mn Alloys

Effect of Microalloyed Al on Microstructure and Corrosion Behaviors of As‐Cast Mg–Zn–Y–Mn Alloys

Toward the development of Mg alloys with simultaneously improved strength and ductility by refining grain size via the deformation process

Effect of Necklace-Type Distribution of SiC Particles on Dry Sliding Wear Behavior of As-Cast AZ91D/SiCp Composites

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