| 长周期堆垛相对Mg-Zn-Y合金的阻尼性能影响 |
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| 引用本文： | 鲁若鹏,王敬丰,丁志兵,赵宇宏.长周期堆垛相对Mg-Zn-Y合金的阻尼性能影响[J].测试科学与仪器,2017,8(3). |
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| 作者姓名： | 鲁若鹏 王敬丰 丁志兵 赵宇宏 |
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| 作者单位： | 1. 中北大学材料科学与工程学院,山西太原,030051;2. 重庆大学材料科学与工程学院,重庆,400044 |
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| 基金项目： | National Natural Science Foundation of China，International Cooperation project of the Ministry of Science and Technology of China，The Science and Technology Major Project of Shanxi Province，International Science and Technology Cooperation Project of Shanxi Province，Research Project Supported by Shanxi Scholarship Council of China，Transformation of Scientific and Technological Achievements Special Guide Project of Shanxi Province，Shanxi Province Science Foundation for Youths |
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| 摘 要： | 采用氩气保护条件下真空熔炼的方法熔炼出MgZnxY1.33x(x=1～4 at.％)合金,并运用SEM、XRD及阻尼测试方法对合金的组织结构和阻尼性能进行分析和讨论.结果表明,合金中主要包含镁基体和长周期堆垛相,随着Zn和Y含量的增加,合金中晶粒逐步细化,长周期堆垛相含量增多,并且针状或带状的长周期堆垛相互穿插在一起.阻尼测试的结果表明,长周期堆垛相的增加有利于镁合金的阻尼性能,Mg-7 ％Zn-12.8％Y合金在高应变阶段阻尼最优,其阻尼值达到0.04.
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| 关 键 词： | 镁合金 阻尼性能 微观组织 长周期堆垛相 |
Effect of long period stacking ordered phase on damping capacities of as-cast Mg-Zn-Y alloys |
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| LU Ruo-peng,WANG Jing-feng,DING Zhi-bing,ZHAO Yu-hong.Effect of long period stacking ordered phase on damping capacities of as-cast Mg-Zn-Y alloys[J].Journal of Measurement Science and Instrumentation,2017,8(3). |
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| Authors: | LU Ruo-peng WANG Jing-feng DING Zhi-bing ZHAO Yu-hong |
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| Abstract: | The mierostructure and damping capacities of MgZnx Y1.33x (x=1-4 at.％) alloys were discussed and researched.The main phase composition of the alloys consists of a-Mg and long-period stacking ordered (LPSO) phase.Due to increased LPSO phase,grain size was refined.LPSO phase was advantageous to the damping properties of the Mg-Zn-Y alloys.Mg-7％ Zn-12.8％Y has the highest damping capacity up to 0.04.Due to stacking fault probability,the LPSO phase in the Mg-Zn-Y alloys could be new damping source to dissipate energy so as to contribute to the improvement of damping capacities. |
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| Keywords: | magnesium alloys damping microstructure long period stacking ordered (LPSO) phase |
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