Time-resolved x-ray diffraction was used to examine the phase evolution of polycrystalline Mg shocked along the principal Hugoniot to states that span multiple phase boundaries into the liquid. The diffraction data indicate that the hcp-bcc phase boundary lies above 27 GPa, with the hcp-bcc transition occurring within nanoseconds of loading. Experiments at 55 GPa reveal a mixture of bcc and liquid, indicating incipient melt occurring 10–15 GPa lower than previously reported, with complete melting observed at 63 GPa.

中文翻译：

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直接观察到hcp-bcc相变和沿镁主要Hugoniot熔化

使用时间分辨的X射线衍射检查了沿主Hugoniot激波到跨越多个相界进入液体的状态的多晶Mg的相演化。衍射数据表明，hcp-bcc相界位于27 GPa以上，且hcp-bcc跃迁发生在加载的纳秒内。在55 GPa的实验中发现密炼胶和液体的混合物，表明早期熔融比以前报道的低10-15 GPa，在63 GPa观察到完全熔融。