Preparation and characterization of Mg-6Li and Mg-6Li-1Y alloys

Dong, Hanwu; Wang, Lidong; Wu, Yaoming

doi:10.1016/s1002-0721(10)60514-5

Cited by 13 publications

(4 citation statements)

References 12 publications

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“…Generally, it is well known that the phases containing heavier elements exhibit brighter contrast in BSE images. In this work, most of element Y were consumed by the formation of I-phase and W-phase31323334, resulting in a very low solid solubility of Y in β-Li and α-Mg phases. However, Zhang et al .…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the α-Mg phases in Mg-6%Li-6%Zn-1.2%Y alloy present a normal age-hardening response with the ageing time increasing, which can be explained by the formation of metastable MgZn precipitates and/or GP zones during ageing treatment at the temperature below 100 °C1441. Previous work demonstrated that the hardness of α-Mg and β-Li phases increases with the addition of alloying elements in duplex Mg-Li(-Zn/Al-Y) alloys and the hardness value of β-Li phases is higher than that of α-Mg phases142133. Therefore, the higher hardness values of α-Mg and β-Li phases in Mg-6%Li-6%Zn-1.2%Y alloy should be ascribed to the addition of Zn and Y.…”

Section: Resultsmentioning

confidence: 99%

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Natural ageing responses of duplex structured Mg-Li based alloys

Wang

et al. 2017

Sci Rep

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Natural ageing responses of duplex structured Mg-6%Li and Mg-6%Li-6%Zn-1.2%Y alloys have been investigated. Microstructural analyses revealed that the precipitation and coarsening process of α-Mg particles could occur in β-Li phases of both two alloys during ageing process. Since a certain amount of Mg atoms in β-Li phases were consumed for the precipitation of abundant tiny MgLiZn particles, the size of α-Mg precipitates in Mg-6%Li-6%Zn-1.2%Y alloy was relatively smaller than that in Mg-6%Li alloy. Micro hardness measurements demonstrated that with the ageing time increasing, the α-Mg phases in Mg-6%Li alloy could have a constant hardness value of 41 HV, but the contained β-Li phases exhibited a slight age-softening response. Compared with the Mg-6%Li alloy, the age-softening response of β-Li phases in Mg-6%Li-6%Zn-1.2%Y alloy was much more profound. Meanwhile, a normal age-hardening response of α-Mg phases was maintained. Tensile results indicated that obvious ageing-softening phenomenon in terms of macro tensile strength occurred in both two alloys. Failure analysis demonstrated that for the Mg-6%Li alloy, cracks were preferentially initiated at α-Mg/β-Li interfaces. For the Mg-6%Li-6%Zn-1.2%Y alloy, cracks occurred at both α-Mg/β-Li interfaces and slip bands in α-Mg and β-Li phases.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Natural ageing responses of duplex structured Mg-Li based alloys

Wang

et al. 2017

Sci Rep

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“…Literatures have shown that yttrium can refine the grains and enhance the mechanical properties of Mg-Li alloys [6][7][8]. Dong et al [6] prepared and investigated the characterization of Mg-6Li and Mg-6Li-1Y alloys, of which the results show that the strengthening effects of Mg-6Li-1Y alloy are attributed to the solid solution strengthening and precipitation hardening that are both introduced by Y. Zhu et al [7] indicated that the addition of Y changes the stacking fault energy of magnesium alloy, resulting in the scattered texture distribution and higher elongation of the sheet. Wu et al [8] also reported that, while Y is added into LA81 and LA83 alloys, the strength and elongation both improve.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of LA51 and LA51–0.5Y alloys with different accumulated strains and rolling temperatures

Wang

Zhu

et al. 2015

Materials & Design

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“…When Li addition is higher than 5,3%wt. [11], it introduces body-centered-cubic (BCC, β phase) β-Li solid solutions to hexagonal closed-packed (HCP, α phase) Mg-based alloys, which results in the (α+β) duplex alloys [12]. The phases exhibit a moderate strength and low formability, the phase has better ductility, but lower creep resistance.…”

Section: Introductionmentioning

confidence: 99%

Registration of Melting and Crystallization Process of Ultra-light Weight MgLi12,5 Alloy with Use of ATND Method

Białobrzeski¹,

Pezda²

2012

Archives of Foundry Engineering

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To the main advantages of magnesium alloys belongs their low density, and just because of such property the alloys are used in aviation and rocket structures, and in all other applications, where mass of products have significant importance for conditions of their operation. To additional advantages of the magnesium alloys belongs good corrosion resistance, par with or even surpassing aluminum alloys. Magnesium is the lightest of all the engineering metals, having a density of 1.74 g/cm 3 . It is 35% lighter than aluminum (2.7 g/cm 3 ) and over four times lighter than steel (7.86 g/cm 3 ). The Mg-Li alloys belong to a light-weight metallic structural materials having mass density of 1.35-1.65 g/cm 3 , what means they are two times lighter than aluminum alloys. Such value of mass density means that density of these alloys is comparable with density of plastics used as structural materials, and therefore Mg-Li alloys belong to the lightest of all metal alloys. In the present paper are discussed melting and crystallization processes of ultra-light weight MgLi12,5 alloys recorded with use of ATND methods. Investigated magnesium alloy was produced in Krakow Foundry Research Institute on experimental stand to melting and casting of ultra-light weight alloys. Obtained test results in form of recorded curves from ATND methods have enabled determination of characteristic temperatures of phase transitions of the investigated alloy.

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Preparation and characterization of Mg-6Li and Mg-6Li-1Y alloys

Cited by 13 publications

References 12 publications

Natural ageing responses of duplex structured Mg-Li based alloys

Natural ageing responses of duplex structured Mg-Li based alloys

Microstructure and mechanical properties of LA51 and LA51–0.5Y alloys with different accumulated strains and rolling temperatures

Registration of Melting and Crystallization Process of Ultra-light Weight MgLi12,5 Alloy with Use of ATND Method

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