Influence of Stacking Fault Energy on the Mechanical properties and Work Hardening behavior of Ultra-Fine (UF) Grained Cu and Cu Alloys

摘要：

Ultrafine-grained (UFG) pure Cu and Cu-Zn alloys samples were prepared using cold-rolling under liquid nitrogen temperature to investigate the influence of stacking fault energy (SFE) on the mechanical properties and microstructure. The tensile tests were performed at room temperature with the strain rate of 10-4/s, and the strain hardening rate (SHR) was computed from the engineering stress-strain curves. A decrease in SFE simultaneously improves strength and ductility. The average grain sizes, microstrain, dislocation density and twin density were examined using X-ray diffraction (XRD). X-ray diffraction measurements indicate that grain size decreased and microstrain, dislocation and twin densities increased with decreasing SFE.

作者: Peng Yang Hao Yang Jingmei Tao Caiju Li Li Shen X.K.Zhu

作者单位: Faculty of Materials Science and Engineering,Kunming University of Science and Technology,68 Wenchang Road,Kunming 650093,China

会议类型: 国际会议

会议名称: 5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)

会议地点: 南京

会议语种:英文

页码: 1003-1008

在线出版日期: 2011-03-01（万方平台首次上网日期，不代表论文的发表时间）