| MB25镁合金中的准晶体与晶体相的研究 |
| |
| 引用本文： | 张少卿 罗治平. MB25镁合金中的准晶体与晶体相的研究[J]. 分析测试学报, 1994, 13(6): 35-37 |
| |
| 作者姓名： | 张少卿 罗治平 |
| |
| 作者单位： | 北京航空材料研究所 |
| |
| 摘 要： | 利用透射电子显微术（ＴＥＭ）及能谱仪微区成分分析（ＥＤＳ）技术，对含有稀土元素的铸态Ｍｇ－Ｚｎ－Ｚｒ－Ｙ系高强镁合金ＭＢ２５中的稀土相鉴定发现，在铸态合金的晶界上存在准晶相，其电子衍射谱显示出５－３－２次对称的特点，为二十面体准晶相。在与准晶相连区域发现一种ＭｇＺｎ＿２型的Ｌａｖｅｓ相，其点阵常数为ａ＝０．５４２ｎｍ，Ｃ＝０．８７３ｎｍ。
|
| 关 键 词： | 稀土 镁合金 准晶 晶体相 TEM EDS |
Study of the Quasicrystal and Crystal Phases in the MB25 Magnesium Alloy |
| |
| Zhang Shaoqing,Luo Zhiping. Study of the Quasicrystal and Crystal Phases in the MB25 Magnesium Alloy[J]. Journal of Instrumental Analysis, 1994, 13(6): 35-37 |
| |
| Authors: | Zhang Shaoqing Luo Zhiping |
| |
| Abstract: | Rare earth(RE)-containing phases in the MB25 magnesium alloy have been identified with the aid of transmission electron microscopy(TEM)and energy dispersive spectrometry(EDS).An icosahedral quasicrystal phase was found at the grain boundaries in the cast alloy.The electron diffraction patterns of the qrasicrystal phase showed 5-,3-and 2-fold symmetries. In the adjacent regions to the quasicrystal phase,a Laves phase of the MgZn_2 type with lattice parameters a=0.542nm and c=0.873 nm was found. |
| |
| Keywords: | Rare earth magnesium alloy Phase Quasicrystal Transmission electron microscopy. |
| 本文献已被 CNKI 维普 等数据库收录！ |
