MICROSTRUCTURE OF MO-47% RE-0.4% ZR ALLOYS AFTER ROLLING AT ROOM TEMPERATURE. I. ANISOTROPY OF MICROBAND STRUCTURE AND PECULIARITIES OF INTERNAL STRUCTURE OF MICROBANDS

被引:5
作者
Ditenberg, I. A. [1 ]
Tyumentsev, A. N. [1 ,2 ]
Shuba, Ya. V.
机构
[1] Russian Acad Sci, Inst Strength Phys & Mat Sci, Siberian Branch, Tomsk, Russia
[2] Tomsk State Univ, VD Kuznetsov Siberian Phys Tech Inst, Tomsk 634050, Russia
关键词
electron microscopy; large plastic deformations; nanostructured states; evaluation of microstructure; plastic deformation mechanism; submicrocrystalline materials; twinning; crystal lattice curvature; disclinations; continual theory of defects;
D O I
10.1007/s11182-010-9486-y
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The results of an electron microscopy investigation of microstructure of a Mo - 47% Re - 0.4% Zr alloy after rolling deformation (epsilon approximate to 90%) at room temperature are presented. A special focus is made on investigation of anisotropy of microband nanostructured states and high-energy defect substructures with high values of the crystal lattice curvature, dislocation density and local internal stresses. A disclination mechanism of re-orientation as a mechanism of fragmentation of the internal microband structure is proposed.
引用
收藏
页码:706 / 713
页数:8
相关论文
共 23 条
  • [1] Korotaev A. D., 1989, Dispersion Hardening of Refractory Metals
  • [2] KOROTAEV AD, 1998, FIZICH MEZOMEKH, V1, P23
  • [3] Likhachev V. A., 1986, CONTINUAL THEORY DEF
  • [4] LIKHACHEV VA, 1975, INTRO THEORY DISCLIN
  • [5] LION XZ, 2004, APPL PHYS LETT, V84, P592
  • [6] MANAKO VV, 1994, FIZ MET METALLOVED+, V78, P162
  • [7] MANAKO VV, 1994, FIZ MET METALLOVED+, V78, P152
  • [8] Rybin V. V., 1986, Large Plastic Deformations and Fracture of Metals
  • [9] SAVITSKII EM, 1965, RHENIUM ALLOYS
  • [10] TREFILOV VI, 1983, PHYS FEATURES REFRAC