Stability of supersaturated solid solution of quenched Al–X(X 5 Zn,Mg, Cu) binary alloys |
| |
作者姓名: | Zhi-Hui Zhang Bai-Qing Xiong Bao-Hong Zhu Yu-Ting Zuo |
| |
作者单位: | National Center of Analysis and Testing for Nonferrous Metals& Electronic Materials, General Research Institute ofNonferrous, Beijing, 100088, China |
| |
基金项目: | This study was financially supported by the National Natural Science Foundation of China (No. 51274046). |
| |
摘 要: | In this study, the changing trend of crystal-lattice constant and the influential factors of the stability of supersaturated solid solutions with various alloying additions in the Al–X(Zn, Mg, Cu) binary alloys were investigated. The samples were analyzed using X-ray diffraction(XRD),X-ray absorption fine structure(XAFS), and scanning electron microscope(SEM). It is found that the addition of Cu causes the largest change of crystal-lattice constant of the Al–xCu supersaturated solid solution binary alloy. The most dramatic change occurs in the initial stage of Cu addition.The change is stabilized thereafter. Also, at the same alloying element addition to the Al–X(X = Zn, Mg, Cu)binary alloys, the Al–xCu is the most unstable system.Influential factors of the stability include the lattice constant change and the type of alloying element. The larger the lattice constant changes, the more unstable the supersaturated solid solution is. The alloying element, easy to aggregate, often leads to the solid solution less stable.
|
关 键 词: | Lattice constant Binary Al alloy Supersaturated solid solution Stability |
本文献已被 CNKI 维普 SpringerLink 等数据库收录! |
|