Local texture analysis in sheets
of cold-rolled
and recrystallization-annealed binary Al-1.3 % Mn revealed a number
of twin grain boundaries, including one twin chain
of third generation. The formation mechanism
of these twins was traced by means
of electron backscattering diffraction analysis
of the twinned grains
and the surrounding matrix at the early stages
of recrystallization. The results obtained suggest that the twins do not form by conventional recrystallization twinning, but the twin boundaries are rather the result
of an impingement between newly formed recrystallized grains
and subgrains
of the as-deformed matrix, which were already in twin relation. Consequently, the formation
of twins does not lead to the generation
of new orientations
and, hence, does not affect the recrystallization texture. Besides the twins, other coincidence site–lattice orientation relations were frequently observed, which also could be tracked to the as-deformed state.
Publisher: | Elsevier Science |
Language of Publication: | English |
Item Identifier: | S1044-5803(98)00027-8 |
Publication Type: | Article |
ISSN: | 1044-5803 |
| Footnotes: Currently at the Department of Materials Science and Engineering, University of Science and Technology, 100083, Beijing, Peoples Republic of China.
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