摘要
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.
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).
作者简介
Lei LU,Prof., Ph.D., to whom correspondence should be addressed, E-mail： llu@imr.ac.cn.
