Abstract
Under the action of the illuminating electron beam in an electron microscope, dislocations in Al-Mg alloys start to move during examination. It was found that screw dislocations move and change easily their moving direction producing many double cross-slip traces, and that slip and cross-slip first occur on those {111} planes lying close to the position at 45°with the foil surface. The cross-slip direction or the Burgers vector of the screw dislocation is the α/2 making an angle of 60-80° with the foilnormal. These observations are in good agreement with the fact that the stress is assumed to be tangential to the foil surface during bending caused by heating.The moving dislocation may through its stress field induce the movement of other dislocations lying close to its path, and on the other hand, may itself be stopped or forced to change its moving direction by the repulsive force of other dislocations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
