Abstract： The thermo-dynamics model of Co-Cu binary system in mechanical alloying process was established based on Miedema semi-experimental theory. Thermo-dynamics and kinetics of Co-Cu nano-crystalline supersaturated solid solution prepared by mechanical alloying process were discussed . The results show that Co-Cu nano crystalline supersaturated solid solution is prepared by mechanical alloying. The thermo-dynamics calculation results indicate that there is no driving force to form solid solution in Co-Cu binary system. It means that driving force of Co-Cu nano-crystalline supersaturated solid solution prepared by mechanical alloying comes from dynamics.

Keywords: mechanical alloying; Co-Cu alloy; nano- crystalline super-saturated solid solution; thermo-dynamics; kinetics

中图分类号：TB383         文献标志码：A

文章编号：1008-5548(2015)02-0064-04

DOI:10.13732/j.issn.1008-5548.2015.02.016

收稿日期：2014-06-18， 修回日期：2014-08-05，在线出版时间：2015-04-17。

基金项目：国家自然科学基金项目，编号：51201118。

第一作者简介：吴志方（1977—），女，博士，副教授，研究方向为亚稳态材料。E-mail：wuzhifang@wust.edu.cn。