Fabrication of a gradient nano-micro-structured surface layer on bulk copper by means of a surface mechanical grinding treatment

被引：423
作者：
Li, W. L. [1 ]
Tao, N. R. [1 ]
Lu, K. [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
来源：
SCRIPTA MATERIALIA | 2008年 / 59卷 / 05期
基金：
中国国家自然科学基金;
关键词：
nanocrystalline materials; surface mechanical grinding treatment (SMGT); gradient nano-micro-structure; copper;
D O I：
10.1016/j.scriptamat.2008.05.003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
By using a novel surface nanocrystallization technique, surface mechanical grinding treatment at cryogenic temperatures, we synthesized a gradient nano-micro-structure in the surface layer of bulk pure copper. The average grain sizes vary from about 22 nm in the topmost surface to sub-micrometers at about 200 mu m deep, corresponding to a gradient change in hardness from 2.1 to 1.1 GPa in the coarse-grained matrix. (c) 2008 Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
引用
收藏
页码：546 / 549
页数：4
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