图6. 时效温度为823 K时,Fe-Cu-Mn合金中Mn含量分别为1%、3%和5%条件下,纳米富Cu相数量密度随时间的变化
Fig.6. The particle number density of the Cu-rich phase in Fe-Cu-Mn alloys with 1%, 3% and 5% Mn aged at 823 K as a function of ageing time