δ′ Phase Precipitation at Low-angle Grain Boundary in Al-Li-Zn-Zr Alloy  

作　　者：蒋晓军 姚大平 李依依 

机构地区：[1]Institute of Metal Research,Academia Sinica,Shenyang,110015,China.

出　　处：《Journal of Materials Science & Technology》1990年第4期263-267,共5页材料科学技术（英文版）

摘　　要：A large number of δ particles precipitated at low-angle grain boundaries have been observed by TEM in a dilute A1-Li-Zn-Zr alloy during ageing at the suitable temperatures.An explanation for this phenomenon was proposed,which involves the role of excess vacancies and capillarity effects.A large number of δ particles precipitated at low-angle grain boundaries have been observed by TEM in a dilute A1-Li-Zn-Zr alloy during ageing at the suitable temperatures.An explanation for this phenomenon was proposed,which involves the role of excess vacancies and capillarity effects.

关 键 词：Al-Li alloy phase transformation PRECIPITATION 

分 类 号：TB3-55[一般工业技术—材料科学与工程]