期刊
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN
卷 109, 期 10, 页码 826-836出版社
IRON STEEL INST JAPAN KEIDANREN KAIKAN
DOI: 10.2355/tetsutohagane.TETSU-2023-037
关键词
silicon steel; single crystal; cold rolling; structure; texture; shear band; SEM; EBSD
This study systematically investigated the changes in crystal orientation during the cold rolling process of a {110}<110> single crystal. The changes were classified into three reduction cases, and the specific crystal orientation changes were described for each case.
We systematically investigated changes in crystal orientation due to the cold rolling of a {110}<110> single crystal, which had not been researched to date, in a reduction range of 10-70%. The results allowed for a classification of the changes into the following three reduction cases. The first was a 10-20% reduction. For this reduction, there was almost no change in the matrix orientation, and a shear band slightly appeared near the surface layer. The second was a 30-50% reduction, at which many shear bands were introduced, and the crystal orientation inside the shear bands was rotated from the initial {110}<110> orientation to the {100}<001> orientation around the TD axis. There are cells in the shear band. And {100}<001> orientation cells are considered having lower strain than around cells to having lower GAM. Additionally, the {111}<211> orientation was also confirmed in a small area that was thought to be surrounded by shear bands. The third was a 60-70% reduction, at which the matrix rotated to {111}<110>, but there were some areas with a {111}<211> orientation. Furthermore, the shear bands increased with increasing reduction, and more inner orientations were observed for {111}<211> than for {100}<001>. {111}<211> bands and {100}<001> bands are considered different origins to change discontinuously.
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