Abstract
τ0, the stress necessary to produce a plastic strain of 2×10−6, has been measured with the use of electrical resistance strain gauges in neutron-irradiated copper single crystals as a function of neutron dose (∼1016 to 1020 neutrons/cm2) and testing temperature (77° and 300°K). τ0 increases from about 0.3 kg/mm2 for ∼1016 neutrons/cm2 to over 5 kg/mm2 for ∼1020 neutrons/cm2; in annealed copper crystals, τ0 is ∼0.02 kg/mm2 (previously determined by other researchers). At all neutron doses, τ0 is about 75% of the macroscopic flow stress. τ0 is observed to increase with the cube root of the neutron dose; the macroscopic flow stress shows the same dose dependence. The results are explained on the basis of dislocation generation and obstacle cutting mechanisms controlling the yielding. These mechanisms are thought to be simultaneously operative.
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.
