Article ID Journal Published Year Pages File Type
1620859 Journal of Alloys and Compounds 2010 8 Pages PDF
Abstract

The microstructural evolution of rapidly solidified Mg94.5Zn2Y1.5LaMM1.5Mn0.5 ribbons during continuous heating up to 450 °C and after isothermal thermal treatments has been studied. Microstructural changes have been correlated with the mechanical properties of the material. Rapid solidification induces the formation of a metastable microstructure, which experiences different transformations during further heating. Such transformations involve precipitation of rounded Mg12RE particles, subsequent W-phase formation, and the final development of relatively thick plates corresponding to a phase with a long periodic stacking ordered structure (LPS-phase). The alloy in the rapidly solidified condition exhibits higher strength, in the 25–300 °C temperature range, than the material annealed at 400 °C for 1 h.

Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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