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首页> 外文期刊>Philosophical Magazine Letters >Malleable hypoeutectic Zr-Ni-Cu-Al bulk glassy alloys With tensile plastic elongation at room temperature
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Malleable hypoeutectic Zr-Ni-Cu-Al bulk glassy alloys With tensile plastic elongation at room temperature

机译：可延展的亚共晶Zr-Ni-Cu-Al大块玻璃态合金，在室温下具有拉伸塑性伸长率

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摘要

A new bulk glassy alloy (BGA) showing macroscopic tensile plastic elongation at room temperature has been developed in the hypoeutectic Zr-Ni-Cu-Al alloy system. The hypoeutectic Zr-Ni-Cu-Al BGA shows a high Poisson's ratio, a low Young's modulus, and is highly malleable in compression. It exhibits a Poisson's ratio of 0.39, a Young's modulus of 73 GPa, and a distinct tensile plastic elongation of about 1.7 percent at room temperature with necking due to the operation of many shear bands. The tensile plastic deformability seems to originate from modifications of the glass structure with increasing the number of Zr-Zr atomic pairs in the hypoeutectic composition.
机译：在亚共晶Zr-Ni-Cu-Al合金体系中开发了一种在室温下具有宏观拉伸塑性伸长率的新型块状玻璃合金（BGA）。亚共晶Zr-Ni-Cu-Al BGA显示出高的泊松比，低的杨氏模量，并且在压缩方面具有很高的延展性。由于许多剪切带的作用，它在室温下具有颈缩，表现出0.39的泊松比，73 GPa的杨氏模量和明显的拉伸塑性伸长率，约为1.7％。拉伸塑性变形能力似乎是由于亚共晶组成中Zr-Zr原子对数目的增加而对玻璃结构的改变而引起的。

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