中國有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 13 No. 5 October 2003 |
（1. Department of Materials Science and Engineering,
Zhejiang University, Hangzhou 310027, China;
2. State Key Laboratory of Silicon Materials,
Zhejiang University, Hangzhou 310027, China;
3. Department of Physics, Zhejiang University, Hangzhou 310027, China）
Abstract:Mechanical alloying (MA) was applied to Ag-B immiscible binary systems by ball milling elemental Ag and B powders. The microstructural characterization of the milled powders was carried out by XRD and TEM. The results show that face-centered-cubic (FCC) Ag-B solid solutions are formed and that the maximum ratio of B to Ag is 4∶1. The structure evolution of Ag-B solid solution during ball milling indicates that the formation of Ag-B solid solution may be divided into two stages, which are mainly substitutional and interstitial solutions separately. The decomposition of the as-milled granules under the irradiation of electron beam is observed by TEM, which reveals that the solid solutions are metastable.
Key words: mechanical alloying; Ag-B solid solution; metastable.
