Abstract
It is well known that luminescence occurs during plastic deformation of X-irradiated alkali halide crystals. Luminescence pattern of KCl single crystals doped with europium has been observed during bending tests by using a CCD camera. Luminescence begins on both the fulcrum contact and opposite sides of a crystal at the beginning of plastic deformation. Several luminescence lines run along slip bands toward neutral axis from the outside of a sample in the direction of 45 degrees. Flash sometimes occurs both in the tension area and in the compression one. As deformation proceeds the luminescence lines are confused and right triangle-like luminescence pattern appears symmetrically on both sides of a central fulcrum in the compression area as well as in the tension one for three point bending tests. Strong flash has taken place in the triangle-like area just at fracture. But relatively homogeneous luminescence between two inner fulcrums has been observed for four point bending tests.
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 callMore From: IOP Conference Series: Materials Science and Engineering
Disclaimer: 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.
