We report an excellent tensile property of the Mg-based nano-dual-phase glass-crystal alloy in sub-micro size. It shows room temperature large ductility (>50% true strain, resulted from the localized necking deformation) with ultrahigh tensile strength (2.4 GPa), compared with 1.4 GPa strength and limited ductility of its metallic glass counterpart. To unraveling the underlying reasons, we have made transmission electron microscope (TEM) in-situ tensile investigation and molecular dynamic (MD) simulation for the materials, showing that homogenous plastic flow of nano-sized metallic glass phase activated by strain non-localization mechanism is responsible for the large ductility.

中文翻译：

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亚微米超强玻璃晶体纳米双相合金的延展性

我们报告了亚微米尺寸的镁基纳米双相玻璃晶体合金的优异拉伸性能。与金属玻璃对应物的 1.4 GPa 强度和有限的延展性相比，它显示出室温大延展性（>50% 真实应变，由局部颈缩变形引起）和超高拉伸强度 (2.4 GPa)。为了揭示其背后的原因，我们对材料进行了透射电子显微镜（TEM）原位拉伸研究和分子动力学（MD）模拟，表明应变非定域机制激活了纳米级金属玻璃相的均匀塑性流动负责大的延展性。