Special Issue "Effect of Rare Earth Additions on the Microstructure, Mechanical Properties and Corrosion of Magnesium Alloys"
A special issue of Metals (ISSN 2075-4701).
Deadline for manuscript submissions: 20 July 2020.
Interests: magnesium alloys; material processing; microstructure; powdermetallurgy; high temperature oxidation
The low density of magnesium makes alloys based on this element potential candidates for many components in which “weight saving” constitutes a significant part of design. Nevertheless, the extended use of magnesium alloys has been limited by their low strength and poor corrosion resistance. Considerable attempts have been devoted to improving mechanical and corrosion properties of magnesium alloys through the proper choice of the alloying additions and/or thermomechanical processing. Numerous benefits have been reported from the use of rare earth additions (yttrium included); strengthening induced by the formation of hard second phases, lessening the inherent basal texture of wrought magnesium alloys, refining grain size because they assist recrystallization of the magnesium matrix or lowering less noble the corrosion potential of many second phases. In spite of these advantages, some issues need to be considered in future development of magnesium alloys containing rare earth elements. Firstly, there is a gradual trend in increasing the price of rare earth elements because of their higher consumption that cannot be totally sustained by exploited natural resources. Because of the low solubility of most of rare earth elements, small additions of these elements result in higher volume fractions of Mg-RE compounds which accelerating corrosion phenomena in magnesium alloys through the establishment of intense galvanic cells. Taken into account the preceding points, this Special Issue is dedicated to the effect of rare earth elements on the microstructure of magnesium alloys containing rare earth elements (commercial or new alloys) as a way for maximizing mechanical properties/corrosion resistance, attempting to reduce the total content of rare earth additions.
Dr. Pablo Pérez Zubiaur
Manuscript Submission Information
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- Magnesium alloys
- Rare earth additions
- Mechanical properties
- Corrosion resistance
- Processing route