| 急冷Al-Mn合金中准晶相的形态和化学组成 |
| |
| 引用本文： | 苗柏和,杨国斌,李万通,李晓峰,周玉清. 急冷Al-Mn合金中准晶相的形态和化学组成[J]. 北京科技大学学报, 1986, 0(4) |
| |
| 作者姓名： | 苗柏和 杨国斌 李万通 李晓峰 周玉清 |
| |
| 作者单位： | 北京钢铁学院金属材料系(苗柏和，杨国斌)，北京钢铁学院物构中心(李万通，李晓峰)，北京钢铁学院科学院物理所(周玉清) |
| |
| 摘 要： | 使用透射式电子显微镜(TEM)观察了Al-12Mn和Al-10Mn-2Fe合金中准晶相的显微形态,选区电子衍射(SAD)做结构分析,用TEM的能谱附件(EDXS)分析准晶相的化学成分。结果表明,典型的准晶相具有菊花状形态,其当量组成非常接近Al_4Mn,准晶相的形态表明它的形成长大机制可能介于非晶和晶体之间;而且,铁的加入促进了合金中准晶相的形成。
|
| 关 键 词： | 准晶相 化学当量组成 形态 能量色散X-线谱仪 透射式电子显微镜 选区电子衍射 原子吸收光谱 |
Morphology and Stoichiometry of Quasicrystal in Rapidly Solidified Al-Mn Alloy |
| |
| Miao Baihe,Yiang Guobin,Li Wantong,Li Xiaofeng and Zhou Yuqing. Morphology and Stoichiometry of Quasicrystal in Rapidly Solidified Al-Mn Alloy[J]. Journal of University of Science and Technology Beijing, 1986, 0(4) |
| |
| Authors: | Miao Baihe Yiang Guobin Li Wantong Li Xiaofeng Zhou Yuqing |
| |
| Abstract: | Chrysanthemum-like morphology of quasicrystal with long-range orientatio -nal order and no translational symmetry in rapidly solidified Al-12 at%Mn and Al-10 ai% Mn-2 at%Fe alloys, is observed by the Hitachi-800 TEM. This result shows that the growth of quasicrystal exhibits a mechanism in between those of noncrystalline and crystalline.The Hitachi-800 EDXS has shown that the stoichiometry of the Al-Mn quasicrystal is very close to Al4Mn6More-over, formation of quasicrystals in Al-Mn alloy is promorted by adding Feto the alloy. |
| |
| Keywords: | quasicrystal stoichiometry morphology EDXS TEM SAD AAS. |
| 本文献已被 CNKI 等数据库收录！ |
|
