Investigation on Three-Dimensional Microstructures and Tensile Properties of Pure Iron During Equal-Channel Angular Pressing

摘要：

Commercial pure iron billets having diameter of 60 mm and length of 180 mm were subjected to equal channel angular pressing (ECAP) at 350 ℃ for 1-4 passes via route Be-Microstructural evolutions on three planes (X, Y, Z planes) were characterized by optical microscopy and transmission electron microscopy (TEM). It was found that after four passes an ultrafine microstructure could be formed on the X plane, but a band structure remained on the Z plane. Accordingly, the mechanical properties exhibited apparent dependence on the orientations. The strength in the X and Y directions was higher than that in the Z direction. The microstructural refinement and mechanical properties were discussed in terms of experimental results.

作者: Gang Yang Muxin Yang Zhengdong Liu Chang Wang Chongxiang Huang

作者单位: Central Iron and Steel Research Institute,Beijing,100081,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: 791-796

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）