Evidence of Bulk Nanostructuring in Zr-based Alloys under Deformation at Temperatures of α←→β Phase Transformations

摘要：

The deformation behavior of commercial Zr alloys with 1% and 2,5%Nb under compression at temperatures of the (a+P)-region of Zr-Nb phase diagram is considered on the basis of experimental data obtained by X-ray texture study of deformed samples. Mechanisms, responsible for plastic deformation of alloys by different temperature-rate regimes were determined on the basis of resulting textures. Among these mechanisms there are crystallographic slip and mutual displacements of crystallites along interphase boundaries. The latter mechanism sharply intensifies by grain fragmentation down to nanostructuring under conditions of α←→β phase transformations. Texture features of deformed samples testify about interaction of plastic deformation with phase transformations and indicate that due to this interaction compression by optimal regimes promotes the utmost refinement of structure elements.

作者: Margarita lsaenkova Yuriy Perlovich Vladimir Fesenko Olga Krymskaya Alexander Zavodchikov

作者单位: National Research Nuclear University Moscow Engineering Physics Institute,Kashirskoe shosse,31,Moscow,115409,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: 629-634

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）