Yasuhiro Miura1, Minoru Furukawa2, Kenji Fujiyama3 and Hiroya Kaieda4
1Department of Metallurgy, Faculty of Engineering, Kyushu University, Fukuoka
Dislocations in aluminum sheets were observed at high temperatures and at room temperature by means of X-ray topography, and the annihilation process and the nature of dislocations were discussed.
Approximately linear relation has been found between the reciprocal of dislocation density and the time of isothermal annealing, and the annealing process is explained in terms of the theory of dislocation network growth. The apparent activation energy of the process is estimated to be 1.8 eV.
The majority of dislocations in well annealed sheets, observed at room temperature, had a strong edge component and did not lie on the exact 111 planes.
Please do not copy without permission.