Variation of crystal orientation in a single crystal copper by nano plastic forming

Abstract

This paper reports studies on new nano fabrication technology to control crystalline structure of metallic material. Wedge tool indentation tests were conducted on a single crystal copper specimen by using nano forming tester, and crystal rotation by plastic deformation was studied. Cross sections of indent grooves made by nano forming tester were machined by FIB, and distribution of crystal orientation on the cross section was analyzed by the method of EBSD. Results revealed that crystal rotation around an indent groove is separated into two zones, and rotation axis correspond with [100] direction regardless of crystal orientation and tool direction. This finding show possibility of crystalline structure control of metallic materials by nano plastic forming technique.