Hitoshi Nakae1 and Akira Okada1
1Department of Precision Engineering, Faculty of Engineering, Hokkaido University, Sapporo
The formation process of (110) recrystallization texture, i.e. Goss texture, in a cold rolled Fe-3%Si alloy sheet was studied by electron and optical microscopic observations.
In the cold rolled state, the (110) component was found as a very weak volume element in the (111)[1 1] matrix. In the early stages of recrystallization where the recrystallized grains occupied a small fraction of the whole volume of the specimen, (110) grains appeared first and then grew into (111)[1 1] deformed crystals, resulting in forming colonies of grains with Goss orientation. The (111)[1 1] component was scarcely found as a recrystallized grain.
The fact that the process was limited within the above matrix region is very similar to that of the cube texture observed in fcc metals.
Then, the (110) grains coarsened without any remarkable increase of the component in number before consuming the matrix grains of other than the (111)[1 1] orientation. During the process, the (110) grains were supposed to compete each other in a colony.
The development of Goss texture might be interpreted by the configuration and distribution of the (110) component in the cold rolled state together with the impurity effect on grain growth.
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