BLIP Irradiation and PIE plan MSUFRIB Aida Amroussia

BLIP Irradiation and PIE plan: MSU-FRIB Aida Amroussia, Ph. D Candidate 1 Pr. Carl J Boehlert 1 Dr. Frederique Pellemoine 2 Pr. Wolfgang Mittig 2 1 Michigan State University 2 Facility For Rare Isotope Beams 1

Objective of the study • In Ti-6 Al-4 V thermomechanical processing influences the grain size and phase compositions (ratio of α phase to β phase). • Our objective is to investigate the effect of the microstructure on the irradiation damage in Ti-6 Al-4 V. • 4 different thermo-processing methods: ØPowder metallurgy (PM) rolled ØDirect Metal Laser Sintering (DMLS): • As received ( DMLS- As received ) • Heat treatment 1 ( DMLS- HT 1): T=850 C • Heat treatment 2( DMLS- HT 2) : T=1020 C Influence of irradiation on tensile properties and ductility of neutron irradiated Ti-6 Al-4 V processed through forgings and stampings Rodchenkov, B. S. , M. V. Evseev, Yu. S. Strebkov, L. P. Sinelnikov, and V. V. Shushlebin, ‘Properties of 2 Unirradiated and Irradiated Ti– 6 Al– 4 V Alloy for ITER Flexible Connectors’, Journal of Nuclear Materials, 417 (2011), 928– 31

Summary of tensile samples 1 PM Rolled PM Rolled DMLS-As DMLS-As DMLS-As 2 received received 3 DMLS-HT 1 DMLS-HT 1 4 DMLS-HT 2 DMLS-HT 2 May be eliminated 5 6 PM Rolled DMLS-As received PM Rolled DMLS-As received May be eliminated 7 DMLS-HT 1 DMLS-HT 1 May be eliminated 8 DMLS-HT 2 DMLS-HT 2 Depending on the capsule dimensions we can decrease the number of samples. 3

Irradiation at BLIP • Objective: High dose. Based on the preliminary MARS estimation by Fermi. Lab ~ 3. 5 dpa. • The desired temperature is the lowest possible. • We need beam parameters to estimate the temperature. Can we also have the boundary conditions for the system (water cooling. . )? • We are considering the possibility to run w/o capsule. • All samples will be mechanically polished to achieve good surface for microscopy. What is tolerance for thickness uniformity across samples? 4

PIE • We have applied for funding through ATR NSUF • Max 50 k $ (~ 4 samples) • The PIE lab would be PNNL • If ATR NSUF proposal is rejected, we are looking for other options. Possible funding through Radiate ? Analysis Test Comments Mechanical property Tensile test The samples would be polished in advance Micro-structure SEM The samples would be polished in advance Nano-structure TEM Can we prepare the TEM samples in advance? If yes were there previous experiments with TEM sample in the capsule? Thermal properties Conductivity Not a priority 5

Thank you for your attention