ANNEALING-INDUCED GRAIN ROTATION IN ULTRAFINE-GRAINED ALUMINUM ALLOY

被引：7
|
作者：
Danilenko, V. N. [1 ]
Bachurin, D., V [1 ,2 ]
Nazarov, A. A. [1 ]
机构：
[1] Russian Acad Sci, Inst Met Superplastic Problems, 39 Khalturin Str, Ufa 450001, Russia
[2] Karlsruhe Inst Technol, Inst Appl Mat Phys, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
来源：
REVIEWS ON ADVANCED MATERIALS SCIENCE | 2018年 / 55卷 / 1-2期
关键词：
NANOCRYSTALLINE FCC-METALS; IN-SITU; DEFORMED POLYCRYSTALS; MOLECULAR-DYNAMICS; BOUNDARY MIGRATION; LATTICE ROTATIONS; THIN-FILMS; JUNCTION DISCLINATIONS; DEFORMATION; GROWTH;
D O I：
10.1515/rams-2018-0029
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Results of in situ transmission electron microscopic studies of annealing-induced evolution of grain boundary misorientations in ultrafine-grained aluminum alloy Al-4%Cu-0.5%Zr (wt.%) processed by high pressure torsion are presented. An experimental procedure based on the single reflection technique was applied for the measurements of orientations of individual grains before and after annealing that allowed for determining misorientations between them. The measurements revealed that relaxation processes occurring in non-equilibrium grain boundaries during short-time annealing are accompanied by a change of grain boundary misorientations, grain rotation, grain migration as well as grain growth. Obtained results were compared with theoretical studies considering the kinetics of grain rotation in discrete-dislocation as well as continuum approaches.
引用
收藏
页码：69 / 77
页数：9
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