Role of alloyed Y in improving the corrosion resistance of extruded Mg–Al–Ca-based alloy

Baek, Soo-Min; Kang, Jeong Su; Shin, Hyung‐Joon; Yim, Chang Dong; You, Bong Sun; Ha, Heung Yong; Park, Sung Soo

doi:10.1016/j.corsci.2017.01.022

Cited by 73 publications

(8 citation statements)

References 31 publications

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“…In general, the deterioration of corrosion resistance can be understood by an increased H 2 evolution rate and/or degraded passivity [25][26][27]. Recently, it has been reported that the H 2 evolution rate is closely related with weight loss in the corrosion of Mg alloys [28][29][30][31][32]. As mentioned above, the ZKC601 alloy showed a corrosion rate that was 16% higher than that of the ZK60 alloy in the 0.6 M NaCl solution at 25 • C. Furthermore, the former alloy exhibited a generation of H 2 that was 24% greater than the latter alloy after 72 h in the NaCl solution.…”

Section: Corrosion-controlling Factormentioning

confidence: 99%

Influence of Intermetallic Particles on the Corrosion Properties of Extruded ZK60 Mg Alloy Containing Cu

Baek

Kim

2018

Metals

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The microstructure and corrosion behavior of the extruded ZK60 Mg alloys with different Cu content were comparatively investigated. The ZK60 alloy had a microstructure consisting of α-Mg grains with intermetallic MgZn 2 and Zn 2 Zr 3 particles. The addition of 1 wt % Cu resulted in the additional presence of CuMgZn particles. In a 0.6 M NaCl solution at 25 • C, the corrosion rate of the alloy with the added Cu appeared to be about 16% faster than that of the alloy without the addition of Cu. The factors affecting the degraded corrosion resistance of the Cu-added ZK60 alloy are discussed.

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Section: Corrosion-controlling Factormentioning

confidence: 99%

Influence of Intermetallic Particles on the Corrosion Properties of Extruded ZK60 Mg Alloy Containing Cu

Baek

Kim

2018

Metals

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“…There are many ways to protect Mg alloys from corrosion [11][12][13][14][15][16][17]. Among these corrosion protection methods, changing the microstructure and composition of Mg alloys by alloying is one of the widely employed manners in the study of corrosion protection of Mg alloys.…”

Section: Introductionmentioning

confidence: 99%

“…This method has proven to be effective [18][19][20][21][22]. Rare earth elements (RE) have become the considerable alloying elements of corrosion protection research works of Mg alloys [16,17,[23][24][25]. T. Takenaka et al [23] suggested the corrosion resistance of Mg alloys was improved by adding a small quantity of RE, whereas an excess of RE degenerated the corrosion resistance of Mg alloys.…”

Section: Introductionmentioning

confidence: 99%

Influence of Rare Earth Element (Y) on Microstructure and Corrosion Behavior of Hot Extrusion AZ91 Magnesium Alloy

Cui

Wang²,

Cui

et al. 2020

Materials

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The influence of rare earth element (RE) Y on the microstructure and corrosion behavior of extruded AZ91 Mg alloy was surveyed via morphology characterization and corrosion performance measurements. The results indicate the corrosion resistance of the transversal section of AZ91 Mg alloy containing Y was improved compared with AZ91 Mg alloy without Y. The corrosion resistance of the longitudinal section of AZ91 Mg alloy with Y was lower than that of AZ91 Mg alloy without Y. The change of corrosion resistance can be attributed to the dispersion and volume fraction of the second phase, the effect of cathodic reduction rate, and the refined second phase.

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“…Corrosion performance is one of the major concerns for applications of magnesium alloys [6,7]. Influences of alloy elements such as Ce [8,9], Nd [9][10][11][12][13], Zn [14,15], Y [11,16], Ca [11,17], and Mn [9,11,15,[18][19][20][21][22][23] on the corrosion behavior of magnesium alloys have been investigated widely in literature. It is widely admitted that Mn addition could combat impure Fe in Mg-Al alloys and reduce corrosion rates of the Mg-Al alloys [11,18,19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Manganese on Microstructure and Corrosion Behavior of the Mg-3Al Alloys

Shan

Liu

Zeng

et al. 2019

Metals

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Microstructure and corrosion behavior of the Mg-3Al-xMn (x = 0, 0.12, 0.21, 0.36, 0.45) (hereafter in wt.%) alloys were experimentally investigated by electron probe microanalysis (EPMA), scanning electron microscope equipped with energy dispersive X-ray spectroscopy (SEM/EDX), X-ray diffraction (XRD), electrochemical, and hydrogen evolution tests. A new self-constructed Mg-Al-Mn-Fe thermodynamic database was used to predict the solidification paths of the alloys. The addition of Mn showed no grain refinement in the cast Mg-3Al alloys. According to the microstructure observation, Al-Fe phases were observed in the non-Mn-added alloy, while Al8Mn5(LT) (Al8Mn5 in low temperature) became the main intermetallic phase in the Mn-added alloys, and the amount increased gradually with the Mn addition. The τ–Al0.89Mn1.11 phase with lower Al/(Fe + Mn) ratio was observed in the alloys with 0.36 and 0.45 wt.% Mn content. According to the electrochemical tests, all five alloys showed localized corrosion characteristics in 3.5 wt.% NaCl solution. Compared with the Mg-3Al alloy, the corrosion resistance of Mn-added alloys were significantly improved and increased gradually with the Mn addition, which was due to the variation of Al-containing intermetallic compounds. The present experimental investigations and thermodynamic calculations confirmed the mechanism that the increasing amount of Al8Mn5(LT) with Mn addition could encapsulate the B2-Al(Mn,Fe) phase with higher Fe. Therefore, it could prevent this detrimental phase from contacting magnesium matrix, thus suppressing micro-galvanic corrosion and improving corrosion resistance gradually.

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Role of alloyed Y in improving the corrosion resistance of extruded Mg–Al–Ca-based alloy

Cited by 73 publications

References 31 publications

Influence of Intermetallic Particles on the Corrosion Properties of Extruded ZK60 Mg Alloy Containing Cu

Influence of Intermetallic Particles on the Corrosion Properties of Extruded ZK60 Mg Alloy Containing Cu

Influence of Rare Earth Element (Y) on Microstructure and Corrosion Behavior of Hot Extrusion AZ91 Magnesium Alloy

Effect of Manganese on Microstructure and Corrosion Behavior of the Mg-3Al Alloys

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