Formation of ultra fine grained structure and mechanical properties by ECAP deformation

摘要：

Commercial pure titanium was deformed by equal channel angular pressing (ECAP) using up to 8 passes. The evolution of microstructure and fracture character were observed by optical microscopy (OM) and spectral analysis microscopy (SEM). The mean grain size decreased with increasing deformation,after 8 passes to 300 run.Microscopy analysis suggested the possible ultra-fine structure mechanism by the formation of cellular structure in grains,forming of subgrains and then forming of high angle grains with random orienta tion.Fractures of ECAP titanium material after 8 passes had transcrystall ductile character with dimple morphology.

关键词： titanium ultra-fine grained structure equal channel angular pressing

作者: Miroslav Greger Miroslav Kursa Jarom(I)r Dr(a)pala

作者单位: VSB-Technical University of Ostrava,Faculty of Metallurgy and Materials Engineering,Av.17.listopadu 15,708 33 Ostrava-Poruba,Czech Republic

会议类型: 国际会议

会议名称: The 10th China-Russia System on Advanced Materials and Technologies(第十届中俄新材料新工艺研讨会)

会议地点: 浙江嘉兴

会议语种:英文

页码: 770-773

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）