Abnormal precipitation behavior in T6 melt-spun AlMgCu ribbon
| Autor: | Shi-shun Li, Zhong-wei Chen, Zong-qiang Feng, Ming-jun Tang |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Precipitation (chemistry) Metals and Alloys Analytical chemistry Crystal structure Geotechnical Engineering and Engineering Geology Condensed Matter Physics Indentation hardness Amorphous solid Crystallography Transmission electron microscopy Phase (matter) Ribbon Materials Chemistry Melt spinning |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 24:22-27 |
| ISSN: | 1003-6326 |
| Popis: | The constituent of precipitations phases of aged melt-spun AlMgCu ribbons was characterized by high-resolution transmission electron microscopy and microhardness test. The cooling rate of as melt-spun ribbon was estimated to be 1.60×10 5 K/s from the empirical relation. The samples were aged at 200 °C for 16 h after solution treatment. Two precipitation phases, i.e. Al 2 CuMg and abnormal amorphous SiO 2 were identified in the T6 melt-spun AlMgCu ribbon. The crystal structure and stoichiometric composition of Al 2 CuMg phase are in good agreement with the reference results [WANG et al (2007; 2005)]. The combined experiments show that the formation of abnormal amorphous SiO 2 appears to be associated with the higher cooling rate in melt-spinning process and has no significant effect on the peak hardness. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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