Progress in Research on Biodegradable Magnesium Alloys: A Review. Issue 7 (14th May 2020)

• Record Type: Journal Article
• Authors: Li, Huan; Wen, Jiuba; Liu, Ya; He, Junguang; Shi, Huina; Tian, Peiwu
• Is Part Of: Advanced engineering materials. Volume 22:Issue 7(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-05-14
• Subjects: biocorrosion resistances -- biodegradable magnesium alloys -- mechanical properties -- mechanisms; Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.202000213
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : Magnesium alloys have great potential as biodegradable materials and have attracted much attention in recent years. Much effort has been expended to improve the properties of biodegradable alloys. Herein, various methods for improving the mechanical properties and biocorrosion resistance of magnesium alloys are discussed in detail, including alloying, thermal processing, and surface modification. The mechanisms by which the mechanical properties of alloys are modified are described, including grain refinement strengthening, solid solution strengthening, dislocation strengthening, and precipitation strengthening. On the basis of previous studies, the mechanisms underlying modifications to the biocorrosion resistance of magnesium alloys are summarized as grain refinement, grain growth, the formation of a passivation film, reduction in cathode–anode potential difference, second‐phase barrier function, and texture formation. Finally, the remaining problems are summarized and directions for future research are indicated. Abstract : At present, the mechanical properties of biodegradable magnesium alloys are improved mainly by fine grain strengthening, solid solution strengthening, dislocation strengthening and precipitation strengthening. The biocorrosion resistance of biodegradable magnesium alloys is modified via the modification mechanisms of grain refinement, grain growth, passivation film forming, reduction in cathode and anode potential differences, second‐phase barrier function, and texture formation.