Mechanical properties and microstructures of various Mg–Li alloys

Chang, Tien Chan; Wang, Jian Yih; Chu, Chun Len; Lee, Shyong

doi:10.1016/j.matlet.2006.03.052

Cited by 228 publications

(79 citation statements)

References 7 publications

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“…The benefits of magnesium-lithium alloys are shown in many papers [1][2][3][4][5][6]12]. However, it should be underlined that the disadvantage of the alloys containing lithium is the decrease of resistance of magnesium alloys as well as decrease of corro- , LAZ831 -T = 300°C with a rate ε · = 0.1s -1 tion and the location of the deformation and as a consequence to quick cracking.…”

Section: Discussionmentioning

confidence: 99%

“…Addition of lithium significantly improves the low susceptibility to plastic working of magnesium alloys. Overview of literature connected with magnesium alloys with lithium [1][2][3][4][5][6] shows that conducted tests concentrate on optimisation of the chemical composition by introduction of additional elements which improve the resistance of alloy and its temperature stability in improvement of vacuum smelting technology and casting and by the application of heat-plastic treatment for forming the structure and mechanical properties. Preparation of such type of material, however, can be difficult in terms of smelting and casting.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Plastic Properties of Mg-Li Alloys Smelted in Vacuum Induction Furnaces after Hot Working

Hadasik¹,

Kuc²,

Mikuszewski³

et al. 2017

Archives of Metallurgy and Materials

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The paper analyses the characteristics of plasticity and microstructure of magnesium alloys with lithium meant for hot plastic working with different lithium content. The alloys were prepared in conditions of vacuum smelting. Achieved ingots were subject to hot extrusion. Tests on Gleeble simulator were conducted to assess the susceptibility of tested alloys to plastic forming in conditions of hot plastic working. For tested alloy the activation energy was marked for hot plastic deformation and plasticity characteristics in function of Zener-Hollomon parameter. After the analysis of the influence of temperature on the deformability of tested alloys it was stated that the alloy containing 8%Li (LAZ831) has better susceptibility to plastic treatment than alloy containing 4%Li (LAZ431), but higher than in case of classic magnesium alloys -AZ31.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure and Plastic Properties of Mg-Li Alloys Smelted in Vacuum Induction Furnaces after Hot Working

Hadasik¹,

Kuc²,

Mikuszewski³

et al. 2017

Archives of Metallurgy and Materials

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show abstract

“…In the 21st century, with the higher requirement of lightweight in modern industry, Mg-Li alloys have drawn increasing attentions, due to their low density and high specific strength, in aerospace, nuclear industry, ordnance industry and other fields [1][2][3][4].…”

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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“…It has also been reported that magnesium alloys containing over 5.5 mass% Li have a bcc structure and show excellent ductility 6,7) . However, Mg-Li alloys also have shortcomings such as low strength and poor corrosion resistance 8,9) . Of all Mg-X binary phase diagrams, only Mg-Sc and MgLi alloys have a bcc structure in a Mg-rich composition.…”

Section: Introductionmentioning

confidence: 99%

Aging Effect of Mg-Sc Alloy with α+β Two-Phase Microstructure

et al. 2016

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Mg-20.5 at% Sc alloy with hcp (α)+bcc (β) two-phase was investigated to understand the effects of aging treatment at 473 K on microstructure, hardness and tensile properties. A Mg-Sc alloy ingot was prepared by induction melting in an Ar atmosphere, and then hot rolled at 873 K followed by cold rolling into a sheet. The rolled specimens were annealed at 873 K to obtain an α+β two-phase microstructure. The annealed specimens were then aged at 473 K for various time. Vickers hardness of the α+β two-phase alloy drastically increased after a certain incubation time and then reached a maximum hardness of 142.8 HV. The incubation time of the Mg-20.5 at% Sc alloy with the α+β two-phase was longer than that of the same alloy with a β single-phase. Ultimate tensile strength (UTS) and elongation of the as-annealed specimen were 280 MPa and 28.2%, respectively. Meanwhile, the specimen aged at 473 K for 14.4 ks showed a UTS of 357 MPa and an elongation of over 12%. The specimen aged for 18 ks showed a higher UTS of 465 MPa, while keeping a better elongation of 6.9%. The age hardening of the MgSc alloys was found to be due to the precipitation of very ne α phase in β phase.

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Mechanical properties and microstructures of various Mg–Li alloys

Cited by 228 publications

References 7 publications

Microstructure and Plastic Properties of Mg-Li Alloys Smelted in Vacuum Induction Furnaces after Hot Working

Microstructure and Plastic Properties of Mg-Li Alloys Smelted in Vacuum Induction Furnaces after Hot Working

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

Aging Effect of Mg-Sc Alloy with α+β Two-Phase Microstructure

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