The Promise of Mg-Li Based Alloys for Biomedical Implant Materials

Lithium is an attractive element for Mg alloys for several reasons. It can improve room temperature ductility by transforming the single-phase hcp microstructure of Mg to a duplex phase followed by a single-phase bcc structure. With a solubility of ~5 wt.% Li, α-Mg is less prone to localized corrosi...

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Veröffentlicht in:Materials science forum 2023-04, Vol.1085, p.139-148
Hauptverfasser: Munroe, Norman, Okafor, Chiamaka
Format: Artikel
Sprache:eng
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Zusammenfassung:Lithium is an attractive element for Mg alloys for several reasons. It can improve room temperature ductility by transforming the single-phase hcp microstructure of Mg to a duplex phase followed by a single-phase bcc structure. With a solubility of ~5 wt.% Li, α-Mg is less prone to localized corrosion due to the absence of intermetallics. Furthermore, the strength of Mg-Li based alloys can be enhanced by alloying and thermomechanical processing. However, grain refinement has proven to be an effective mechanism in offsetting a compromise in ductility. It is for these reasons that Mg-Li based alloys have been the focus of great interest as a biomaterial where high strength, appreciable ductility and uniform corrosion behavior are required.
ISSN:0255-5476
1662-9752
1662-9752
DOI:10.4028/p-55j9e9