Microstructure and texture evolution in ultrafine-grained pure Ti processed by equal-channel angular pressing with subsequent dynamic compression

作者：Wang Liu; Wang Ying Chun^*; Zhilyaev Alexander P; Korznikov Alexander V; Li Shu Kui; Korznikova Elena; Langdon Terence G

来源：Scripta Materialia, 2014, 77: 33-36.

DOI：10.1016/j.scriptamat.2014.01.011

• Deformation mechanisms
• Dynamic compression
• Equal-channel angular pressing
• Titanium
• Ultrafine grains

Ultrafine-grained (UFG) pure Ti processed by equal-channel angular pressing was subjected to dynamic compression at a stain rate of similar to 4000 s(-1) over a wide temperature range. It is shown that the structure in longitudinal sections evolves from elongated shapes to polygons in dynamic testing at 93-473 K and to equiaxed grains at 673 K which grow to similar to 1.8 mu m. The deformation mechanisms of UFG pure Ti are discussed with reference to its crystallographic texture.

• 出版日期2014-4-15
• 单位北京理工大学