摘要
高密度 nano 规模变丑双胞胎借助于表面在 Cu 样品的表面层被介绍在房间温度的机械摩擦处理(SMAT ) 。有变丑双胞胎的 Cu 样品在紧张测试显示出大约 470 MPa 的收益力量。加强的 Thesignificant 可以被归因于有效抑制由丰富的成双的边界滑动脱臼。
High density nano-scale deformation twins were introduced in the surface layer of Cu sample by means of surface mechanical attrition treatment （SMAT） at room temperature. The Cu sample with deformation twins shows a yield strength of about 470 MPa in tension tests. The significant strengthening may be attributed to the effective inhibition of slip dislocations by abundant twin boundaries.
基金
This work was supported by the National Natural Science Foundation of China under grant No.50021101,50431010,50571096
M0ST of China(Grant No.2005CB623604).
关键词
铜
形变双晶
加固
拉伸性能
表面机械磨损处理
纳米结构
Copper
Surface mechanical attrition treatment （SMAT）
Deformation twins
Strengthening
