| Mg-Zn-Zr-RE系镁合金的显微组织 |
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| 引用本文： | 陶春虎,张少卿.Mg-Zn-Zr-RE系镁合金的显微组织[J].航空学报,1989,10(5):305-308. |
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| 作者姓名： | 陶春虎 张少卿 |
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| 作者单位： | 北京航空材料研究所
(陶春虎)，北京航空材料研究所(张少卿) |
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| 摘 要： | 应用于航空工业中的MB15镁合金（Mg,5.0～6.0％Zn,0.5～0.9％Zr）为高强度变形镁合金。为进一步提高此合金的强度而添加稀土元素。本文报导含有Y及混合稀土的Mg-Zn-Zr-RE系合金的相组成及其微观形态的研究结果。 试验用合金的化学成分列于表1。表中MM为混合稀土,其中主要元素La10.76％,Nd17.54％,Gd14.60％,Dy14.09％,Y26.88％,此外还有少量Ce、Pr、Ho、Er等。试样用材为铸锭及挤压型材,后者是铸锭经350℃加热2h后挤压而成。
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| 收稿时间： | 1988-07-18; |
MICROSTRUCTURES IN THE Mg-Zn-Zr-RE SYSTEM ALLOYS |
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| Institute of Aeronautical Materials,Beijing,Tao Chunhu and Zhang Shaoqing.MICROSTRUCTURES IN THE Mg-Zn-Zr-RE SYSTEM ALLOYS[J].Acta Aeronautica et Astronautica Sinica,1989,10(5):305-308. |
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| Authors: | Institute of Aeronautical Materials Beijing Tao Chunhu and Zhang Shaoqing |
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| Institution: | Institute of Aeronautical Materials, Beijing |
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| Abstract: | The phase constitution and microstructural characteristics in the as-cast and extruded Mg-Zn-Zr-RE system alloys have been studied. In the as-cast alloys, except for α-Mg matrix, there are Z ph-ase（Mg3RE2Zn3）and W phase（Mg3RE2Zn3） which are distributed along grain boundaries and Zn2Zr3 phase and ZnZr2 phase which precipitated in the matrix. In the extruded alloys, the dispersion-strengthening phase MgZn（phase）was precipitated both in the matrix and along the sub-grain boundaries in addition to the phases mentioned above. |
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| Keywords: | magnesium alloys rare earth microstructures |
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