(1.北京航空航天大學 材料科學與工程系， 北京 100083；
2. 山東科技大學 材料科學與工程系， 泰安 271019)
摘 要: 研究了Al-Zn-Li-Mg-Cu-Zr合金在393 K，433 K和473 K時效過程中δ′相的長大規(guī)律，發(fā)現當合金在393 K時效時，δ′相的長大符合LSW長大規(guī)律；當合金在433*#K和473*#K時效時，δ′相半徑的3次方與時效時間符合拋物線關系，這與在此溫度下沉淀析出 X 相有關。
關鍵字: Al-Zn-Li-Mg-Cu-Zr合金; δ′相; LSW規(guī)律
（1. Department of Materials Science and Engineering,
Beijing University of Aeronautics and Astronautics, Beijing 100083, P.R.China;
2. Department of Materials Science and Engineering,
Shangdong Unviersity of Science and Technology, Tai′an 271019, P.R.China）
Abstract:The growth ofδ′phase in a Al-Zn-Li-Mg-Cu-Zr alloy aged at 393 K, 433 K and 473 K was investigated. The results show that the growth of δ′phase obeys the LSW law when aged at 393 K. δ′particle size cubed against aging time shows a parabolic relationship when aged at 433 K and 473 K, which is related with the precipitation of X phase.
Key words: Al-Zn-Li-Mg-Cu-Zr alloy; δ′phase; LSW law
