科研之友
微信
新浪微博
Facebook
分享链接
摘要
In order to improve the comprehensive performance of aluminium alloys for the aviation application, it is necessary to experi-mentally characterize the microstructure, and thus to build a bridge between the microstructure and macro-performance of aluminum al-loys. This paper introduces the brief developing course of 2xxx, 6xxx and 7xxx aluminum alloys and their microstructure evolution dur-ing artificial aging . The structural characteristics of significant phases like GP zones in Al-Cu alloys and GPB zones in Al-Cu-Mg al-loys, and the precipitation behavior of S phase in Al-Cu-Mg alloys, etc, are thoroughly studied. The application of Transmission Elec-tron Microscopy, Scanning-Transmission Electron Microscopy, 3-Dimentional Atom Probe in the investigations of structure, morpholo-gy, composition, interface structures, intergranular corrosion resistance and so on has been reviewed, especially theΩphase in Al-Cu-Mg-Ag alloys andβ″phase in Al-Mg-Si-Cu alloys. Our group has finished the works such as the simulation and characterization of com-plex selected area electron diffraction patterns in Al alloys, as well as the measuring of the precipitates’ volume fraction with high accu-racy which is based on the convergent beam electron diffraction.
-
单位中南大学
