A Study on Characteristics of Microstructures and Orientations of UFG Materials Prepared by SPD

摘要：

In the paper, the study was conducted on the characteristics of microstructures and orientations of UFG pure copper and 6061 aluminum alloy prepared by AARB, ECAP and CECC severe plastic deformation processes, in which SEM, TEM, EBSD and Xray diffraction techniques were employed. The result of the study shows that microstructures, mainly composed of subgrains and dislocation kinks, are profuse in the UFG materials by the three SPDs. These kinds of microstructures have the strength of the materials much enhanced and the toughness heavily decreased. In these processes, shear deformation makes gains get finer and finer with the existence of the preferred orientations in the prepared UFG materials. Nevertheless, CECC shows the heaviest effect on the grain refining and the preferred orientation weakening.

作者: Shi Qingnan Chen Yongjin Wang Junli

作者单位: Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 65 Faculty of Architecture and Civil Engineering,Kunming University of Science and Technology,Kunming 6 Research Center for Analysis and Measurement,Kunming University of Science and Technology,Kunming 65

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: 343-347

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）