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

页码：775 / 778

页数：4

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