Small angle X-ray scattering used in precipitation in AlZnMgCuLi alloy
来源期刊：中国有色金属学报(英文版)2003年第6期
论文作者：杜志伟 周铁涛 刘培英 陈昌麒 钟皓 洪新国 赵辉 董宝中
文章页码：1301 - 1305
Key words：Al-Zn-Mg-Cu-Li alloys; precipitate; microstructure parameters; aging; small angle X-ray scattering
Abstract: Small angle X-ray scattering has been used to study the variation of microstructure parameters in an Al-Zn-Mg-Cu-Li alloy aged at various temperatures for various durations. Coarsening of precipitates was studied by analyzing the curve of kinetics strength vs the cube of radius. The results show that the coarsening of precipitates conforms to LSW principle. In addition, the characteristic of s3J(s) vs s curves was analyzed. The results show that the curves for samples aged at 160℃ for various durations(24, 48 and 96h) have negative deviation, which maybe results in the formation of certain new precipitate. In the other aging treatment states, the curves conform to Porod principle which means there is sharp boundary between the precipitates and matrix.
