Microstructure, mechanical and corrosion properties of Mg–2Dy–xZn (x=0, 0.1, 0.5 and 1 at.%) alloys

Bi, Guangli; Li, Yuandong; Zang, Shijun; Zhang, Jianbin; Ma, Ying; Yuan, Hao

doi:10.1016/j.jma.2014.03.002

Cited by 45 publications

(10 citation statements)

References 40 publications

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“…Dysprosium has a high solid solubility in Mg and the melting point of the intermetallic Mg24Dy5 is 560 °C [36]. It is expected to improve the room temperature mechanical properties of Mg by solid solution strengthening and precipitation hardening as the solubility decreases drastically with decrease in temperature.…”

Section: Dysprosiummentioning

confidence: 99%

Mechanical Properties of Magnesium-Rare Earth Alloy Systems: A Review

Tekumalla

Seetharaman

Almajid

2014

Metals

179

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Magnesium-rare earth based alloys are increasingly being investigated due to the formation of highly stable strengthening phases, activation of additional deformation modes and improvement in mechanical properties. Several investigations have been done to study the effect of rare earths when they are alloyed to pure magnesium and other Mg alloys. In this review, the mechanical properties of the previously investigated different magnesium-rare earth based binary alloys, ternary alloys and other higher alloys with more than three alloying elements are presented.

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Section: Dysprosiummentioning

confidence: 99%

Mechanical Properties of Magnesium-Rare Earth Alloy Systems: A Review

Tekumalla

Seetharaman

Almajid

2014

Metals

179

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“…4a shows the XRD spectra of the precursor films formed by different interval of time on different Mg substrates. A comparison of the patterns shows that Mg 2 Al(OH) 7 , MgAl 2 (OH) 8 3 and a small amount of Al(OH) 3 are also observed in the film of WE54 alloy; while Al 5 (OH) 13 (CO 3 )Á5H 2 O exists on the other Mg substrates. In the present case, it is reasonable to think that each Al is co-precipitated with less than two Mg ions to form the precursor solids, i.e., Mg 2 Al(OH) 7 (Mg:Al = 2:1) and MgAl 2 (OH) 8 [31].…”

Section: Resultsmentioning

confidence: 96%

“…A comparison of the patterns shows that Mg 2 Al(OH) 7 , MgAl 2 (OH) 8 3 and a small amount of Al(OH) 3 are also observed in the film of WE54 alloy; while Al 5 (OH) 13 (CO 3 )Á5H 2 O exists on the other Mg substrates. In the present case, it is reasonable to think that each Al is co-precipitated with less than two Mg ions to form the precursor solids, i.e., Mg 2 Al(OH) 7 (Mg:Al = 2:1) and MgAl 2 (OH) 8 [31]. The existence of this HT-like material on WE54 alloy, at first sight, is surprising because the precursor films on different Mg substrates were fabricated under similar experimental conditions.…”

Section: Resultsmentioning

confidence: 96%

“…This conversion film is environmentally friendly and low cost, which can protect Mg alloys for a relatively longer time. However, other kinds of Mg alloys (e.g., Mg-Zn and Mg-RE (rare earth) alloys) also need protection significantly [7][8][9][10]. If HT film can be synthesized on different alloy systems, it would be critical for the industrialization applications of the present technology to Mg alloys.…”

Section: Introductionmentioning

confidence: 99%

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Influence of alloying elements and microstructure on the formation of hydrotalcite film on Mg alloys

et al. 2015

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“…Magnesium alloys have great potential of reducing vehicle weight because of their high specific strength and stiffness [1][2][3][4][5][6][7]. In the past decade, the Mg-Gd-Y-Zn based alloys containing long period stacking ordered (LPSO) structures have been shown to exhibit excellent mechanical properties, including the high tensile strength of over 500 MPa at room temperature [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

On the microstructure and mechanical property of as-extruded Mg-Gd-Y-Zn alloy with Sr addition

Liu

Diao

Chai

et al. 2017

Materials Science and Engineering: A

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In this study, microstructure evolutions of 0.2, 0.6) alloys (named as sample 0Sr, 0.2Sr, 0.6Sr) during heat-treatment and extrusion were investigated. As-cast sample 0Sr contains typical long period stacking ordered (LPSO) phases and Mg 3 RE. With Sr addition, amounts of LPSO phases decrease and are gradually replaced by the Mg 17 Sr 2 phases. After homogenization and annealing treatment, profuse strip LPSO phases readily precipitate in grain interiors of sample 0Sr, while only Mg 17 Sr 2 and Mg 3 RE phases are detected in samples 0.2Sr and 0.6Sr. It suggests that the Sr addition would inhibit LPSO phases. After extrusion, the bimodal grain structures, the bulk and strip LPSO phases are detected in sample 0Sr, which can contribute to providing strengthening and extra strain hardening. In as-extruded sample 0.2Sr, finer recrystallized grain size, bulk Mg 17 Sr 2 and LPSO phases (micron-scale) and Mg 5 RE phase (nano-scale) are found due to the pre-annealing treatment. However, lower amounts of both nano-sized and macro-sized LPSO phases lead to the low ultimate strength (300 MPa). In sample 0.6Sr, the strip LPSO phases are readily formed even though the length and total amounts of LPSO phases decrease.More bulk Mg 17 Sr 2 phases and LPSO phases are also precipitated, which lead to the more superior yield and ultimate strengths of 0.6Sr sample under higher temperature, as compared with the 0Sr sample.2

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Microstructure, mechanical and corrosion properties of Mg–2Dy–xZn (x=0, 0.1, 0.5 and 1 at.%) alloys

Cited by 45 publications

References 40 publications

Mechanical Properties of Magnesium-Rare Earth Alloy Systems: A Review

Mechanical Properties of Magnesium-Rare Earth Alloy Systems: A Review

Influence of alloying elements and microstructure on the formation of hydrotalcite film on Mg alloys

On the microstructure and mechanical property of as-extruded Mg-Gd-Y-Zn alloy with Sr addition

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