摘要
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 s^3J(s) vs s curves was analyzed. The results show that the curves for samples aged at 160 ℃ for various durations(24, 48 and 96 h) 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.
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 s^3J(s) vs s curves was analyzed. The results show that the curves for samples aged at 160 ℃ for various durations(24, 48 and 96 h) 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.
出处
《中国有色金属学会会刊：英文版》
CSCD
2003年第6期1301-1305,共5页
Transactions of Nonferrous Metals Society of China
基金
Project(G19990 64 9)supportedbyNationalKeyFundamentalResearchandDevelopmentProgramofChinaandproject(2 0 0 1AA332030)supportedbyAdvancedMaterialsCommitteeofChina
关键词
AIZnMgCuLi合金
铝合金
析出
XRD
显微结构
Al-Zn-Mg-Cu-Li alloys
precipitate
microstructure parameters
aging
small angle X-ray scattering
