Influence of Lithium on hcp Magnesium Alloys

Bach, Friedrich Wilhelm; Schaper, Mirko; Jaschik, Christian

doi:10.4028/www.scientific.net/msf.419-422.1037

Cited by 45 publications

(25 citation statements)

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“…Furthermore, the x-ray data showed that there were no BCC Mg peaks in the spectrum, probably due to only 3.77 mass% of lithium in the alloy. Although the as-cast Mg-Li-Al-Zn alloy is in HCP structure, a recent study 16) shows that HCP Mg-Li alloys containing 4 mass% of lithium exhibit a significantly increased ductility, as compared to the alloys without lithium.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Mg–Li–Al–Zn Master Alloy in Air by Electrolytic Diffusing Method

Lin

Uan

2005

Mater. Trans.

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Electrolytic diffusing method was conducted at 500 C to prepare Mg-Li-Al-Zn master alloy in air. It was also explored for the melting and casting of Mg-Li alloy in air, as the Mg-Li-Al-Zn master alloy used as raw material. A mixture of 45 mass% lithium chloride (LiCl) and 55 mass% potassium chloride (KCl) was employed as the electrolyte. Mg-9 mass%Al-1 mass% Zn (AZ91) alloy was used as cathode material while graphite selected as anode. Experimental results showed that the electrolysis current linearly depended on the applied working voltage. Deposition of lithium occurred on the cathode surface. After the electrolysis experiments, Mg-12 mass% Li-9 mass% Al-1 mass% Zn alloy sheet can be obtained. At working voltage of 4.2 V and one hour electrolysis, the hexagonal-closed-pack AZ91D sheet (1.5-mm thickness) was fully converted to body-centered-cubic Mg-Li-Al-Zn alloy. The formation of Mg-Li phase during electrolysis was studied by inductively coupled plasma-atomic emission spectrometer (ICP), X-ray diffraction, and optical microscopy. It is diffusion rather than deposition rate (electrolysis current) that controlled the depth of Mg-Li phase formed in the cathode sample. The Mg-Li-Al-Zn alloy used as master alloys could be melted and casted in air without ignition. However, the content of lithium in the as-cast block was reduced to 3.77 mass%, properly due to oxidation of lithium metal during melting.

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Section: Resultsmentioning

confidence: 99%

Preparation of Mg–Li–Al–Zn Master Alloy in Air by Electrolytic Diffusing Method

Lin

Uan

2005

Mater. Trans.

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“…MZ (manganese-zinc) and ZM alloying systems have the similar properties and both are used for wrought application in transportation industry. Further mechanical properties are given in Table 6 [131][132][135][136][137][138]. Magnesium is perhaps the most appropriate core material for biodegradable implants due to its biodegradable, biocompatible, strong, lightweight and ductile properties.…”

Section: Magnesium Alloys Stentmentioning

confidence: 99%

A review on biodegradable materials for cardiovascular stent application

Hou

Pan

et al. 2016

Front. Mater. Sci.

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A stent is a medical device designed to serve as a temporary or permanent internal scaffold to maintain or increase the lumen of a body conduit. The researchers and engineers diverted to investigate biodegradable materials due to the limitation of metallic materials in stent application such as stent restenosis which requires prolonged anti platelet therapy, often result in smaller lumen after implantation and obstruct re-stenting treatments. Biomedical implants with temporary function for the vascular intervention are extensively studied in recent years. The rationale for biodegradable stent is to provide the support for the vessel in predicted period of time and then degrading into biocompatible constituent. The degradation of stent makes the re-stenting possible after several months and also ameliorates the vessel wall quality. The present article focuses on the biodegradable materials for the cardiovascular stent. The objective of this review is to describe the possible biodegradable materials for stent and their properties such as design criteria, degradation behavior, drawbacks and advantages with their recent clinical and preclinical trials.

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“…The effects of addition of minor Sc on the properties of Mg-Li-Al-Zn alloy are investigated by Wu et al 8 Various alloying elements have been added into the Mg-Li alloy systems to explore the effects on the mechanical properties and formability. [9][10][11][12] However, in Mg-Li-Al alloys, there are many dubious points about the microstructure evolution and its effects on hardness during aging process. In this article, the microstructure evolution and hardness variation of Mg-9Li-6Al and Mg-9Li-6Al-2La alloys under different aging parameters were investigated.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution and Hardness Variation of Mg-9Li-6Al-xLa (x = 0 and 2.0) Alloys Under Different Aging Parameters

Wang

Fei

et al. 2015

JOM

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Mg-9Li-6Al(LA96) and Mg-9Li-6Al-2La(LA96-2La), after solution treatment, were aged at 50°C and 150°C, respectively. The microstructure evolution and hardness variation of the alloys under different aging parameters were investigated. The results show that the morphology of MgLi 2 Al(h) phases in LA96 changes from short and rod like to particulate during the aging period, and the size of particulate phase becomes larger and larger in the late aging period. The small, stripy a phases precipitate from b phases. The microstructure evolution leads to a continuous decrease in hardness. A temporary increase of hardness appears in the process of aging treatment at 150°C because of the precipitation of AlLi phases. The addition of La inhibits the variation of MgLi 2 Al morphology and the precipitation of small and stripy a phases in b phases, and it makes the decrease rate of hardness become lower in the process of aging treatment.

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Influence of Lithium on hcp Magnesium Alloys

Cited by 45 publications

References 0 publications

Preparation of Mg–Li–Al–Zn Master Alloy in Air by Electrolytic Diffusing Method

Preparation of Mg–Li–Al–Zn Master Alloy in Air by Electrolytic Diffusing Method

A review on biodegradable materials for cardiovascular stent application

Microstructure Evolution and Hardness Variation of Mg-9Li-6Al-xLa (x = 0 and 2.0) Alloys Under Different Aging Parameters

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Influence of Lithium on hcp Magnesium Alloys

Cited by 45 publications

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Preparation of Mg&ndash;Li&ndash;Al&ndash;Zn Master Alloy in Air by Electrolytic Diffusing Method

Preparation of Mg&ndash;Li&ndash;Al&ndash;Zn Master Alloy in Air by Electrolytic Diffusing Method

A review on biodegradable materials for cardiovascular stent application

Microstructure Evolution and Hardness Variation of Mg-9Li-6Al-xLa (x = 0 and 2.0) Alloys Under Different Aging Parameters

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Preparation of Mg–Li–Al–Zn Master Alloy in Air by Electrolytic Diffusing Method

Preparation of Mg–Li–Al–Zn Master Alloy in Air by Electrolytic Diffusing Method