摘要
Phase relation of the aluminium magnesium scandium system in the Al rich range at 430 ℃ was investigated by means of multiphase diffusion couples along with electron probe microanalysis, X ray diffraction and electron microscopy techniques. It consists of five single phase fields, four 2 phase fields and one 3 phase field. The maximum solid solubilities of Mg and Sc in α (Al) solid solution at 430 ℃ are about 15.27%Mg(mole fraction) and 0.33%Sc, respectively. The maximum solid solubilities of Sc in Mg 2Al 3 and Mg 17 Al 12 are about 1.08% and 0.03% at the same temperature. The diffusion path at 430 ℃ was constructed and interpreted by means of the Al Mg Sc equilibrium phase diagram assuming that local equilibrium is established at the phase boundaries.
Phase relation of the aluminium magnesium scandium system in the Al rich range at 430 ℃ was investigated by means of multiphase diffusion couples along with electron probe microanalysis, X ray diffraction and electron microscopy techniques. It consists of five single phase fields, four 2 phase fields and one 3 phase field. The maximum solid solubilities of Mg and Sc in α (Al) solid solution at 430 ℃ are about 15.27%Mg(mole fraction) and 0.33%Sc, respectively. The maximum solid solubilities of Sc in Mg 2Al 3 and Mg 17 Al 12 are about 1.08% and 0.03% at the same temperature. The diffusion path at 430 ℃ was constructed and interpreted by means of the Al Mg Sc equilibrium phase diagram assuming that local equilibrium is established at the phase boundaries.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2003年第5期1124-1127,共4页
Transactions of Nonferrous Metals Society of China
基金
Project (G19990 64 90 72)supportedbytheNationalKeyFundamentalResearchandDevelopmentProgramofChina
