Mo-8wt%Cu高能球磨过程实验研究与数值模拟

Experimental Investigation and Numerical Simulation of High Energy Milling Mo-8wt%Cu

对Mo-8wt%Cu复合粉末进行高能球磨,利用SEM、显微硬度仪对高能球磨后的层片状复合粉末进行了层片厚度和显微硬度的测定,并推导出层片厚度与球磨时间的理论模型,结果表明,随着球磨时间的延长,Mo-Cu复合粉末层片结构不断细化,片层厚度变小。硬度没有达到饱和值之前,粉末的硬度和球磨时间存在着线性关系,实测值小于计算值,而硬度值达到饱和值之后,实测值大于计算值。

Mo-8wt%Cu composite powder was fabircated by high energy milling,lamellar thickness and microhardness of high energy milling composite powder were characterized by SEM and microhardness instrument.It was found that lamellar structure of Mo-Cu composite powder becomes very fine with increasing the milling time,and the lamellar thickness gets small.Hardness and milling time have lineal relation.,Testing value is lower than calculating value size before hardness do not arrives at saturation value,And testing value is more than calculating value after hardness arrives at saturation value.