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| 1.0 wt% Li对Al-Zn-Mg-Cu合金析出相的影响(英文) | |
| 作者姓名： | Wei Fang a b * Li Jinshana Hu Ruia Kou Hongchaoa aState Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi’an 710072 China bBeijing Xinghang Mechanical-electrical Equipment Factory Beijing 100074 China |
| 作者单位： | 西北工业大学凝固国家重点实验室,北京星航机电设备厂 |
| 基金项目： | Foundation items： National Basic Research Program of China （G19990649）; National High-tech Research and Development Program of China |
| 摘 要： | Microstructure control always plays a key role in enhancing properties of high-strength Al alloys. Attempts to improve the microstructure of 7000 series alloys by addition of 1.0 wt% Li have been made for a long time, but unsystematically. This article compares the microstructural features of 1.0 wt% Li-containing A1-Zn-Mg-Cu alloy with those of Li-free Al-Zn-Mg-Cu alloy by using differential scanning calorimetric （DSC） techniques, Vickers microhardness and transmission electron microscopy （TEM）. The results show the dominance of Guinier Preston （GP） zones, η＇ or η phases in 1.0 wt% Li-containing Al-Zn-Mg-Cu alloy, and confirm the capability of Li to retard the rate of precipitates growth and coarsening. |
| 关 键 词： | Al-Zn-Mg-Cu-Li 合金 沉淀物 DSC TEM 微硬度 |
| 收稿时间： | 2007-12-27 |
| 本文献已被 CNKI 维普 ScienceDirect 等数据库收录！ | |