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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Microstructure and mechanical properties of Mg-Gd-Dy-Zn alloy with long period stacking ordered structure or stacking faults
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Microstructure and mechanical properties of Mg-Gd-Dy-Zn alloy with long period stacking ordered structure or stacking faults

机译：具有长期堆垛有序结构或堆垛层错的Mg-Gd-Dy-Zn合金的组织和力学性能

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摘要

The Mg-6.5Gd-2.5Dy-1.8Zn (wt.%) alloy with high strength and ductility was prepared by conventional casting method. At room temperature, the as-cast alloy with 14H long period stacking ordered (LPSO) structure exhibits an ultimate tensile strength of 276 MPa and elongation to failure of 10.8%, while they are 392 MPa and 6.1 % for the peak-aged alloy with basal plane stacking faults (SF). The results indicate that the kinking of LPSO structure is beneficial for both work hardening and plasticity, and 14H LPSO structure contributes more to the improvement of ductility while SF is more effective in increasing strength.
机译：通过常规铸造方法制备具有高强度和延展性的Mg-6.5Gd-2.5Dy-1.8Zn （wt。％）合金。在室温下，具有14H长时程堆积有序（LPSO）结构的铸态合金具有276 MPa的极限抗拉强度和10.8％的破坏伸长率，而峰值时效合金的极限抗拉强度为392 MPa和6.1％。基底平面堆积断层（SF）。结果表明，LPSO结构的扭结既有利于加工硬化，又有利于可塑性，而14H LPSO结构有助于延展性的提高，而SF更有效地提高强度。

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