摘要
采用双级雾化水冷快凝工艺制备了Ａ１－２０Ｓｉ和（２０２４Ａ１）－２０Ｓｉ－５Ｆｅ合金粉末，对其中的细粉进行了时效热处理，并在透射电镜下观察了其微现组织，分析了时效引起粉末组织细化的机理．结果表明：时效热处理使合金粉末中的第二相发生显著细化和均匀化．
In this paper, Al-20Si and (2024A1) -2OSi-5Fe alloy powder have been prepared by two -stage atomization technology with water -cooling and some superfine powder has been treated with aging heat treatment. The effects of aging treatment on the microstructure of the su- perfine powder have been analyzed by transmission electron microscope (TEM) and X-ray diffraction (XRD) . The results showed that the size of secondary phase size became fining and uniform after ageing heat -treatment. The reason and mechanism of the microstructure transition have been primary investigated.
出处
《哈尔滨理工大学学报》
CAS
2001年第5期112-116,120,共6页
Journal of Harbin University of Science and Technology
