Mechanical Properties of the Mg-Gd-Y-Zn-Zr Alloys with Different Morphologies of Long-Period Stacking Ordered Phases

Zhou Xiaojie; Liu Chuming; Gao Yonghao; Jiang Shunong; Chen Zhiyong

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Mechanical Properties of the Mg-Gd-Y-Zn-Zr Alloys with Different Morphologies of Long-Period Stacking Ordered Phases

机译：Mg-Gd-Y-Zn-Zr合金的力学性能，具有不同形态的长期堆叠阶段

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摘要

Long-period stacking ordered (LPSO) phases with different morphologies and distributions were obtained in the direct chill cast Mg-6.9Gd-3.2Y-1.5Zn-0.5Zr (wt.%) alloy by controlling the homogenization time or cooling rate. Microstructural evolution and the effect of various LPSO phases on the mechanical properties were investigated. There is no obvious -Mg grain growth during homogenization at 510 degrees C. Intragranular thin-platelet and coagulated LPSO phases hardly improve the strength but help to develop the ductility. Numerous lamellar phases, which contain ABCA-type building blocks with RE and Zn segregation, form during the furnace-cooling process. Lamellar phases, which exhibit lower thermostability compared with the thin-platelet LPSO, slightly improve the tensile yield strength and induce numerous cracks which result in the premature fracture.

机译：通过控制均质化时间或冷却速率，在直接冷轧铸造Mg-6.9GD-3.2Y-1.5Zn-0.5Zr（Wt.％）合金中获得具有不同形态和分布的长期堆叠有序（LPSO）相。研究了微观结构的演化和各种LPSO相对机械性能的影响。在510摄氏度下均质化期间没有明显的晶粒生长。鞘内薄血小板和凝固的LPSO阶段几乎没有改善强度，但有助于发展延展性。许多层状阶段，其含有Re和Zn偏析的ABCA型构建块，在炉冷却过程中形成。与薄血小板LPSO相比，层状相，其表现出较低的热稳定性，略微提高拉伸屈服强度，并诱导导致过早骨折的裂缝。

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《Journal of Materials Engineering and Performance》 |2018年第11期|共9页
作者
Zhou Xiaojie; Liu Chuming; Gao Yonghao; Jiang Shunong; Chen Zhiyong;
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作者单位

Cent S Univ Sch Mat Sci &

Engn Changsha 410083 Hunan Peoples R China;

Cent S Univ Sch Mat Sci &

Engn Changsha 410083 Hunan Peoples R China;

Cent S Univ Sch Mat Sci &

Engn Changsha 410083 Hunan Peoples R China;

Cent S Univ Sch Civil Engn Changsha 410083 Hunan Peoples R China;

Cent S Univ Sch Mat Sci &

Engn Changsha 410083 Hunan Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类金属学与金属工艺;工程材料学;
关键词
ductility; heat treatment; long-period stacking ordered; magnesium; microstructure;

机译：延展性;热处理;长期堆叠有序;镁;微观结构;

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1. Mechanical Properties of the Mg-Gd-Y-Zn-Zr Alloys with Different Morphologies of Long-Period Stacking Ordered Phases [J] . Zhou Xiaojie, Liu Chuming, Gao Yonghao, Journal of Materials Engineering and Performance . 2018,第11期

机译：Mg-Gd-Y-Zn-Zr合金的力学性能，具有不同形态的长期堆叠阶段
2. The effect of morphology of the long-period stacking ordered phase on mechanical properties of the Mg-7Gd-3Y-1Nd-1Zn-0.5Zr (wt.%) alloy [J] . Li M., Wang X., Feng Q. Y., Materials Characterization . 2017,第期

机译：长期堆叠顺序相对Mg-7GD-3Y-1ND-1ZN-0.5ZR（WT.％）合金机械性能的影响
3. Effects of heat treatment on the morphology of long-period stacking ordered phase, the corresponding damping capacities and mechanical properties of Mg-Zn-Y alloys [J] . Lu Ruopeng, Wang Jingfeng, Chen Yongliang, Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics . 2015,第Null期

机译：热处理对Mg-Zn-Y合金长周期堆积有序相的形貌，相应的阻尼能力和力学性能的影响
4. Thermal Stability and Mechanical Properties of Extruded Mg-Zn-Y Alloys with Long-Period Stacking Order Phase [C] . Masafumi Noda, Yoshihito Kawamura PRICM 7;Pacific Rim International Conference on Advanced Materials and Processing . 2011

机译：长周期有序相挤压Mg-Zn-Y合金的热稳定性和力学性能
5. Effects of volume fraction and morphology of transformed beta phase on the mechanical properties of titanium - 6-aluminum - 4-vanadium alloy. [D] . Quintero Aguilo, Pedro O. 1998

机译：体积分数和相变β相的形貌对钛6铝4钒合金力学性能的影响。
6. The Effect of Rod-Shaped Long-Period Stacking Ordered Phases Evolution on Corrosion Behavior of Mg95.33Zn2Y2.67 Alloy [O] . Jingfeng Wang, Weiyan Jiang, Shengfeng Guo, 2018

机译：棒状长周期堆积有序相演变对Mg95.33Zn2Y2.67合金腐蚀行为的影响
7. Effect of long-period stacking ordered phase on microstructure, mechanical property and corrosion resistance of Mg alloys: A review [O] . Daokui Xu, En-hou Han, Yongbo Xu 2016

机译：长周期堆积有序相对镁合金组织，力学性能和耐蚀性的影响：综述
8. The Role of Process History, Phase Morphology and Interface Strength Upon the Mechanical Properties of Dispersion Strengthened Alloys [R] . Ansell, G. S. 1972

机译：工艺历史，相形态和界面强度对分散强化合金力学性能的影响

Mechanical Properties of the Mg-Gd-Y-Zn-Zr Alloys with Different Morphologies of Long-Period Stacking Ordered Phases

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