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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Effects of Zn addition on the improvement of glass forming ability and plasticity of Mg-Cu-Tb bulk metallic glasses
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Effects of Zn addition on the improvement of glass forming ability and plasticity of Mg-Cu-Tb bulk metallic glasses

机译：锌添加对提高Mg-Cu-Tb块状金属玻璃的玻璃成形能力和可塑性的影响

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摘要

The effects of Zn addition on the glass forming ability and mechanical properties of Mg65Cu25-xZnxTb10 (x = 0, 2.5, 5, and 7.5) have been investigated. We show that small amounts of Zn addition improve the glass forming ability, strength, and ductility of the Mg-Cu-Tb bulk metallic glass. For the best glass forming composition, amorphous rods of Mg65Cu20Zn5Tb10 with a diameter of at least 7 mm have been prepared by a conventional copper mold casting method. Additionally, this composition exhibits obvious yielding and plastic deformation upon quasi-static compressive loading. The fracture strength. total strain to failure, and the plastic strain of the Mg65Cu20Zn5Tb10 bulk metallic glass reaches 1025 MPa, 2.05% and 0.15%, respectively. This is significantly superior compared to that exhibited by the original Zn-free Mg-Cu-Tb amorphous alloy.
机译：研究了添加锌对Mg65Cu25-xZnxTb10（x = 0、2.5、5和7.5）的玻璃形成能力和机械性能的影响。我们表明，少量的Zn可以改善Mg-Cu-Tb大块金属玻璃的玻璃形成能力，强度和延展性。为了获得最佳的玻璃成型组合物，已通过常规的铜铸模方法制备了直径至少为7 mm的Mg65Cu20Zn5Tb10非晶棒。另外，该组合物在准静态压缩载荷下表现出明显的屈服和塑性变形。断裂强度。 Mg65Cu20Zn5Tb10大块金属玻璃的总破坏应变和塑性应变分别达到1025 MPa，2.05％和0.15％。与原始的无锌Mg-Cu-Tb非晶合金相比，它具有明显的优越性。

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