High-Temperature Severe Plastic Deformation of Ferritic Steel by Torsion

摘要：

An ultra-low carbon IF steel was heavily deformed up to an equivalent strain of 36 at various high temperatures of ferrite single-phase region and various strain rates. Effects of temperature and strain rate on the microstructures evolved in torsion deformation were clarified. On the other hand, it was found that homogeneous ultrafine grained structures were not obtained by the present torsion deformation though very high strain was applied. The coarser grain sizes than those obtained by conventional severe plastic deformation (like ARB) were due to the deformation at higher temperature and lower strain rate, but lower fraction of high-angle grain boundaries in the torsion specimen was suggested to be attributed to the characteristics of monotonic torsion (or simple shear) deformation including the way of strain evaluation.

作者: Aries Setiawan Daisuke Terada Nobuhiro Tsuji

作者单位: Department of Material Science and Engineering,Graduate School of Engineering,Kyoto University,Yoshida Honmachi,Sakyo-ku,Kyoto 606-8501,Japan

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: 403-408

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）