Morphological and Crystallographic Characterizations of the Ca-Mg-Zn Intermetallics Appearing in Ternary Diffusion Couples

Abstract:

In the present research, seven multi-phase diffusion couples, with terminal alloys having different microstructural features, were prepared and annealed for 4 weeks at 335°C. The phase relations and change of morphological characteristics of each phase were studied along the diffusion zone by means of scanning electron microscopy/energy dispersive X-ray spectroscopy and quantitative electron probe microanalysis. Depending on the different terminal compositions of the diffusion couples, the morphological evolution in the diffusion zone can be: tooth-like, matrix phase with isolated and/or dendritic precipitates. Electron back-scattered diffraction analysis was carried out to investigate the crystal orientation of the ternary compounds and the crystal orientation relations at the interface of the diffusion zones.

• Periodical: Advanced Materials Research (Volume 409)
• Pages: 387-392
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.409.387
• Online since: November 2011
• Authors: Yi Nan Zhang, Dmytro Kevorkov, Florent Bridier, Mamoun Medraj
• Keywords: Ca-Mg-Zn, Diffusion Couples, Electron Microprobe, Phase Diagram, X-Ray Diffraction (XRD)

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