|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Mechanical and Creep Behavior of Advanced Materials: A SMD Symposium Honoring Prof. K. Linga Murty
||Emulating Neutron Damage in Nanocrystalline Copper via In-situ Ion Irradiation
||Walid Mohamed, Sumit Bhattacharya, Laura Jamison, Marquis A. Kirk, Korukonda Murty, Abdellatif Yacout
|On-Site Speaker (Planned)
The hypothesis that nanocrystalline (nc) materials should possess enhanced radiation tolerance characteristics remains questionable to date considering the remarkable deviation in experimental observations reported in this regard. Emulating neutron damage in materials through controlled ion irradiation experiments has accelerated nuclear materials development by avoiding typical shortcomings of neutron irradiation. In this work, the IVEM Tandem facility is used to irradiate samples of nc-copper up to temperatures and doses similar to that of neutron irradiation experiments conducted on the same material. While irradiation induced grain growth controlled the response of nc-copper to neutron irradiation starting at relatively low damage level (dpa < 0.01), irradiation hardening became dominant at dpa > 1 dpa. Interestingly, minimal grain growth was observed in nc-copper irradiated with 1 MeV Kr+ ions up to 2 dpa. Further ion irradiation experiments are in progress to investigate any potential effect of dose rate and TEM foil thickness.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)