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含二十面體準(zhǔn)晶相的鑄態(tài)Mg-Zn-Y合金阻尼性能的研究
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華東交通大學(xué)材料科學(xué)與工程學(xué)院

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國家自然科學(xué)基金項目（面上項目，重點項目，重大項目）


A Study of Damping Properties of As-Cast Mg-Zn-Y Alloy with I-Phase
Author:
Affiliation:

1.School of Material Science and Engineering,East China Jiaotong University;2.School of Material Science and #$NBSEngineering,East China Jiaotong University

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    采用傳統(tǒng)鑄造方法制備Mg-Zn-Y合金，基于典型的含二十面體準(zhǔn)晶相的Mg93Zn6Y1合金，研究了鑄態(tài)Mg-Zn-Y合金的枝晶形貌與其阻尼性能的關(guān)系。通過控制澆注溫度，攪拌速度和攪拌時間，獲得不同參數(shù)下的合金的枝晶形貌。結(jié)果表明，鑄態(tài)Mg93Zn6Y1的顯微組織主要由α-Mg樹枝狀晶體和二十面體準(zhǔn)晶相組成。攪拌后，初始α-Mg樹枝狀晶體逐漸具有分形特征，且其尺寸變化，從而影響合金的阻尼能力。本文詳細(xì)討論了這一機(jī)制。

    Abstract:

    Conventional casting method was adopted to fabricate the alloys of Mg-Zn-Y, in which the dendritic morphology and its relation to the damping properties of as-cast Mg-Zn-Y alloy were studied based on the typical Mg93Zn6Y1 alloy containing icosahedral quasicrystal phase. By controlling the pouring temperature, the stirring speed and stirring time, the dendritic morphology with different parameters was obtained. The results show that the microstructure of the as-cast Mg93Zn6Y1 mainly consists of α-Mg dendritic crystal and icosahedral quasicrystal phase. After stirring, the primary α-Mg dendritic gradually have fractal characteristics in faith, and its size changes, affecting the damping capacity. The mechanism was discussed in detail.

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萬迪慶,胡瑩琳,利助民,葉舒婷.含二十面體準(zhǔn)晶相的鑄態(tài)Mg-Zn-Y合金阻尼性能的研究[J].稀有金屬材料與工程,2019,48(1):71~76.[Wan Diqing, Hu Yinglin, Li Zhumin, Ye Shuting. A Study of Damping Properties of As-Cast Mg-Zn-Y Alloy with I-Phase[J]. Rare Metal Materials and Engineering,2019,48(1):71~76.]
DOI：10.12442/j. issn.1002-185X.20170605

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  • 收稿日期:2017-07-10
  • 最后修改日期:2017-08-08
  • 錄用日期:2017-08-16
  • 在線發(fā)布日期: 2019-02-18
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