TEM microstructure of rapidly solidified Mg–6Zn–1Y–1Ce alloy
| Autor: | Zheng-xin Lu, Xue-feng Guo, Wen-peng Yang |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Alloy Metals and Alloys engineering.material Geotechnical Engineering and Engineering Geology Condensed Matter Physics Microstructure Tetragonal crystal system Crystallography Transmission electron microscopy Phase (matter) Materials Chemistry engineering Orthorhombic crystal system Grain boundary Solid solution |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 22:786-792 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(11)61246-6 |
| Popis: | Rapidly solidified (RS) Mg–6Zn–1Y–1Ce ribbons were prepared by single roller melt-spinning technique. Transmission electron microscopy and energy dispersive X-ray spectroscopy were employed to characterize the microstructure of RS ribbons. The results show that there is high density of particles distributed within grains and at grain boundaries in the region near wheel side. The particle density is decreased in the middle region and free surface region. The alloy is predominantly composed of supersaturated α-Mg solid solution, T phase and W phase; meanwhile, a few icosahedral quasicrystalline and Mg 4 Zn 7 particles are also observed. The T phase is confirmed having a body-centered orthorhombic structure that is transformed from the body-centered tetragonal structure Mg 12 Ce phase due to the partial substitution of Mg atoms by Zn. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect