Periodic crystal lattice rotation in microband groups in a bcc metal

被引：45
作者：
Dorner, Dorothee [1 ]
Adachi, Yoshitaka [1 ]
Tsuzaki, Kaneaki [1 ]
机构：
[1] Natl Inst Mat Sci, Struct Met Ctr, Tsukuba, Ibaraki, Japan
来源：
SCRIPTA MATERIALIA | 2007年 / 57卷 / 08期
关键词：
ferritic steel; deformation microstructure; periodic misorientation; microband; EBSD;
D O I：
10.1016/j.scriptamat.2007.06.048
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Fe-3mass%Si specimens with a columnar grain structure were deformed in compression at ambient temperature. Groups of microbands were found in the vicinity of a grain boundary. These microband groups are characterized by shear and a periodic change of crystal lattice orientation within distances of 1-2 pm. Furthermore, new grains with a size of 200-300 nm were formed in the microband groups during deformation up to 36% strain. A local lattice rotation model is given that explains the experimental observations. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：775 / 778
页数：4
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