排序方式: 共有2条查询结果,搜索用时 0 毫秒
1
1.
Wei Fang a b* Li Jinshana Hu Ruia Kou Hongchaoa aState Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi’an China bBeijing Xinghang Mechanical-electrical Equipment Factory Beijing China 《中国航空学报》2008,21(6):565-570
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. 相似文献
2.
1