b'This project enables the development of an integrated theoretical, modeling, and experimental platform that can predict mechanical response of ion irradiated structural materials based on microscale mechanical tests.We conducted proton radiation andWe employ a crystal plasticity Fe ion radiation tests on the 800 Cmodel to predict the mechanical annealed FeCrAl alloys at Texas A&Mresponse of FeCrAl alloys at University. Proton irradiation experi- different deformation temperatures. ments provide plateau damage of 0.01First, a MSCP model is developed dpa and 0.1 dpa. Fe ions energy is 5based on generation and motion of MeV, producing a peak damage of 100dislocations which is significantly dpa at 350 C. Based on micropillaraffected by the microstructures compression tests at University ofand temperatures. The MSCP is Nebraska-Lincoln and Purdue Univer- then implemented into the crystal-sity, the critical resolved shear stresslographic VPSC framework for (CRSS) to activate the {110} 111 andpolycrystalline aggregates. The {112} 111 slip system in the 0.1 dpaMSCP-VPSC model is employed for proton irradiated FeCrAl alloy is 195unirradiated materials, and reveals MPa and 210 MPa at 200 C, 160 MPathe effects of texture, dislocation and 182 MPa at 350 C, respectively. Atdensity and temperature on the 500 C, the CRSS for both slip systemsmechanical response. The predic-are 105 MPa. It is noted that the CRSStions show fairly good correlation increases with the damage, and theto experiments which is shown in increase in the CRSS for {112} 111 isprevious reports. Furthermore, we higher than {110} 111. Nanoinden- considered the evolution of damage tations with different strain rates werein materials during deformation to conducted on the unirradiated samplecapture features of both hardening and the Fe ion irradiated samples withand softening stages during loading peak damages of 1 dpa and 10 dpa.FeCrAl alloys.The hardness increases with dose and strain rate. The strain rate sensitivity m is measured to be 0.0216, 0.0226, and 0.0216 for the sample with no damage, 1 dpa, and 10 dpa respec-tively, indicating that the strain rate sensitivity barely changes after Fe3+ ion irradiation.2022|AFC ACCOMPLISHMENTS 47'