Mechanisms of Microstructure Refinement in Titanium during abc Deformation at 400C

摘要：

Mechanical behavior and microstructure evolution of commercial pure titanium during successive compressions of samples along three orthogonal directions (or so-called abc deformation) at 400℃ and strain rate 10-3s-1 were studied. The cumulative S-Σε curve demonstrates a steady state flow stage following the intensive strengthening. The microstructure evolution of titanium during first increments of abc deformation is associated with twinning and shear deformation. Further deformation results in microstructure refinement due to transformation of coincidence site lattice twin boundaries to high-angle arbitrary ones and formation of highangle deformation induced boundaries. Another mechanism of new grains formation is continuous dynamic recrystallization.

作者: Sergey Zherebtsov Egor Kudryavtsev Gennady Salishchev

作者单位: Belgorod State University,Laboratory of Bulk Nanostructured Materials,Pobeda Str.-85,308015,Belgorod,Russia

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: 439-444

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）