Transmission Electron Microscopy of Oxygen-Free Copper Machined Surface

摘要

The purpose of this study is to investigate microstructures of machined surface of oxygen-free high-conductivity copper (OFHC copper) by using a transmission electron microscope (TEM). The observation results indicated that dislocations did not concentrate at cell boundary but uniformly distributed all over the ultraprecision machined surface. While, the precision machined surface offered a number of subgrains with small grain diameters. Generated heat by the friction at the tool clearance face allowed internal structure to thermal-recover.