Studies on the heterogeneous precipitation in an AI-Cu-Mg alloy

摘要：

　　The properties of an age-hardening aluminum alloy can be affected greatly by the heterogeneous precipitation.The microstructures of the heterogeneous precipitation in an Al-Cu-Mg alloy after artificial ageing were investigated.Two kinds of S phase formed along dislocation were observed by HRTEM and the precipitation sequence,variant selection and the strengthening effect of the S precipitates were discussed.The three-dimentional morphology of the S phase formed along dislocation lines,on grain boundary were characterized by using the technique of STEM-HAADF 3D tomography.Quantitative parameters describing the shape and the distribution of the grain boundary precipitates (GBP) were calculated based on the 3D tomography analysis.

关键词： Al-Cu-Mg alloy heterogeneous precipitation HRTEM 3D tomography

作者: Yanqing Yang Zongqiang Feng Maohua Li Yanxia Chen Bin Huang

作者单位: State Key Lab of solidification Processing, Northwestern Polytechnical University, Xi”an, P.R.China

会议类型: 国内会议

会议名称: 第八届全国材料科学与图像科技学术会议

会议地点: 山东荣成

会议语种:英文

页码: 8-8

在线出版日期: 2012-10-18（万方平台首次上网日期，不代表论文的发表时间）