Obtaining Nanostructured Titanium by Twist Extrusion

摘要：

The results of twist extrusion studying for Ti and its alloys are presented. By means of optical microscopy showed that the cross section of samples, as a rule,has a characteristic macrostructure with the structural elements, elongated in the direction of vortex centered on the axis of extrusion. In the longitudinal section of samples macrostructure resembles turbulent flow of liquid. The microstructure after multiple twist extrusion characterized by submicron dimensions and large-angle boundaries. Specified structure ensures the billets, treated by twist extrusion, a high strength and ductility. Despite the strain heterogeneity in one pass,multipass twist extrusion leads to a homogeneous structure and properties on the cross section of a sample. This is conditioned by mixing of a metal during twist extrusion, the structure stabilization and saturation of mechanical properties under simple shear.

关键词： Ttvist Extrusion severe plastic deformation ultrafine grained materials

作者: V. Varyukhin Y. Beygelzimer R. Kulagin A. Reshetov

作者单位: Donetsk Institute for Physics and Engineering named after O. O. Galkin of the National Academy of Sciences of Ukraine,72 R. Luxemburg St.,83114 Donetsk,UKRAINE

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 2020-2023

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）