Coherent nanoscale ternary precipitates in crystallized Ca4Mg72Zn24 metallic glass

The ternary precipitates in the Ca4Mg72Zn24 metallic glass formed during heat treatment were characterized by differential scanning calorimetry, X-ray diffraction and transmission electron microscopy (TEM). The melt-spun sample after heat treatment exhibits nanoscale elongated precipitates of Ca2Mg5Zn13 distributed at the grain boundaries and plate-like precipitates of Ca2Mg6Zn3 in the grain interior of the Mg matrix. Both of these ternary compounds were identified by high-resolution TEM as precipitates that were coherent with the Mg matrix and could result in enhanced mechanical properties.

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