Mechanical properties of room temperature rolled MgLiAlZn alloy

Wang, Jian-Yih

doi:10.1016/j.jallcom.2009.06.047

Cited by 34 publications

(12 citation statements)

References 8 publications

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“…Efforts of traditional methods are still prevailing to improve strengths by the addition of alloying elements [26][27][28] and mechanical processing, [20,[29][30][31][32][33][34][35][36][37] as a result of their efficiency and economy. Previous works indicate that rare earth (RE) elements, especially the Y element, can improve the mechanical properties of Mg-Li alloys, [26][27][28] and even enable duplex Mg-8Li alloys to present super-plasticity.…”

Section: The Addition Of Lithium In Magnesium Enablesmentioning

confidence: 99%

“…[26] Among the mechanical processing efforts, the rolling procedure is demonstrated to introduce microstructure improvement, [20,31,32] even grains with an ultra-low grain size of~1 lm, [33] to Mg-Li alloys. After rolling, the hardness and strength of Mg-Li alloys are enhanced, [34,35] and the elongation is improved up to 60 pct at room temperature. [31,32,[34][35][36] Another study reveals that the strength of Mg-Li dualphase alloy increases with the increase of total rolling reduction.…”

Section: The Addition Of Lithium In Magnesium Enablesmentioning

confidence: 99%

“…After rolling, the hardness and strength of Mg-Li alloys are enhanced, [34,35] and the elongation is improved up to 60 pct at room temperature. [31,32,[34][35][36] Another study reveals that the strength of Mg-Li dualphase alloy increases with the increase of total rolling reduction. [34] The rolling reduction of duplex Mg-Li alloys is reported to reach 60 pct in total at room temperature.…”

Section: The Addition Of Lithium In Magnesium Enablesmentioning

confidence: 99%

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Microstructures and Mechanical Properties of As-Cast and Hot-Rolled Mg-8.43Li-0.353Ymm (Y-riched mischmetch) Alloy

Dong

Wang

et al. 2011

Metall Mater Trans A

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Mg-8.43Li-0.353Ymm (Y-riched mischmetch) alloy was prepared using the metal model casting method and then hot-rolled at 573 K (300°C) to total reduction of 81 pct, and microstructures and mechanical properties were evaluated. Results show that the rolling procedure introduces great dynamic recrystallization, and b-Li grains in the rolled alloy present an ultra-low average size of 2.18 lm. The ultimate tensile strength and yield strength of the rolled alloy are 158-167 MPa and 124-130 MPa, respectively, 42-63 pct higher than that of the as-cast alloy. The elongation of the rolled alloy is improved to 31-40 pct, as about four to five times that of the as-cast alloy, which is ascribed to the great grain refinement of the b-Li phase.

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Section: The Addition Of Lithium In Magnesium Enablesmentioning

confidence: 99%

Section: The Addition Of Lithium In Magnesium Enablesmentioning

confidence: 99%

Section: The Addition Of Lithium In Magnesium Enablesmentioning

confidence: 99%

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Microstructures and Mechanical Properties of As-Cast and Hot-Rolled Mg-8.43Li-0.353Ymm (Y-riched mischmetch) Alloy

Dong

Wang

et al. 2011

Metall Mater Trans A

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“…Initially, hardness is enhanced by the precipitates. With further aging, hardness decreases monotonically [11,12]. It is generally believed that the age-hardening phenomena of Mg-Li-Al connects with a metastable phase called θ (MgLi 2 Al).…”

Section: Introductionmentioning

confidence: 99%

The solution and aging behavior of Mg-8Li-3Al-xCe(x=0, 1.0) alloys

Lin¹,

Wu²,

Fei³

et al. 2021

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The microstructure and microhardness properties of the as-cast, as-soluted and as-aged alloys of Mg-8Li-3Al-x Ce(x = 0, 1.0) were investigated. The as-cast Mg-8Li-3Al (LA83) alloy consists of α-Mg, β-Li, AlLi and MgLi2Al phases. The as-cast LA83-1Ce alloy consists of α-Mg, β-Li, MgLi2Al, AlCe and Al2Ce phases. Besides, the addition of Ce can refine and spheroidize the microstructure of as-cast LA83 alloy. After the addition of Ce, the HV of α and β phases were improved by 137 % and 127 %, respectively, and the HV value difference between α and β became small. Heat treatment can raise the alloy-HV, α-HV and β-HV of LA83 and LA83-1Ce alloys. The variation in hardness during aging process is attributed to the precipitation of MgLi2Al phase and the possibility of the transformation from AlLi phase to MgLi2Al phase. With the increase of aging temperature, the size of MgLi2Al phase becomes larger apparently, causing the age softening phenomenon happens.K e y w o r d s : Mg-Li alloy, Ce, aging behavior microhardness, microstructure

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“…hot extrusion or equal channel angular extrusion)12141516. Moreover, their thermal stability is poor17181920, which is mainly ascribed to the early precipitation of phase particles during ageing process17181920212223. Wang et al .…”

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confidence: 99%

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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Mechanical properties of room temperature rolled MgLiAlZn alloy

Cited by 34 publications

References 8 publications

Microstructures and Mechanical Properties of As-Cast and Hot-Rolled Mg-8.43Li-0.353Ymm (Y-riched mischmetch) Alloy

Microstructures and Mechanical Properties of As-Cast and Hot-Rolled Mg-8.43Li-0.353Ymm (Y-riched mischmetch) Alloy

The solution and aging behavior of Mg-8Li-3Al-xCe(x=0, 1.0) alloys

Natural ageing responses of duplex structured Mg-Li based alloys

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