BLIP Irradiation and PIE plan: MSU-FRIB

Aida Amroussia, PhD Candidate1

Pr. Carl J Boehlert1

Dr. Frederique Pellemoine2

Pr. Wolfgang Mittig2

1Michigan State University2Facility For Rare Isotope Beams

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• In Ti-6Al-4V thermomechanical processing influences the grain size and phase compositions (ratio of α phase to β phase).

Influence of irradiation on tensile properties and ductility of neutron irradiated Ti-6Al-4V processed through forgings and stampings

Rodchenkov, B.S., M.V. Evseev, Yu.S. Strebkov, L.P. Sinelnikov, and V.V. Shushlebin, ‘Properties of Unirradiated and Irradiated Ti–6Al–4V Alloy for ITER Flexible Connectors’, Journal of Nuclear Materials, 417 (2011), 928–31

Objective of the study

• Our objective is to investigate the effect of the microstructure on the irradiation damage in Ti-6Al-4V.• 4 different thermo-processing methods:

Powder metallurgy (PM) rolledDirect Metal Laser Sintering (DMLS):

• As received ( DMLS- As received )• Heat treatment 1 ( DMLS- HT1):

T=850 ͦ C• Heat treatment 2( DMLS- HT2) :

T=1020 ͦ C

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Summary of tensile samples

1 PM Rolled PM Rolled PM Rolled PM Rolled PM Rolled

2DMLS-As received

DMLS- As received

DMLS-As received

DMLS-As received

DMLS-As received

3 DMLS-HT 1 DMLS-HT 1 DMLS-HT 1 DMLS-HT 1 DMLS-HT 1

4 DMLS-HT 2 DMLS-HT 2 DMLS-HT 2 DMLS-HT 2 DMLS-HT 25 PM Rolled PM Rolled PM Rolled PM Rolled PM Rolled

6DMLS-As received

DMLS-As received

DMLS-As received

DMLS-As received

DMLS-As received

7 DMLS-HT 1 DMLS-HT 1 DMLS-HT 1 DMLS-HT 1 DMLS-HT 18 DMLS-HT 2 DMLS-HT 2 DMLS-HT 2 DMLS-HT 2 DMLS-HT 2

May be eliminated

May be eliminated

May be eliminatedMay be eliminated

Depending on the capsule dimensions we can decrease the number of samples.

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• Objective: High dose. Based on the preliminary MARS estimation by FermiLab ~ 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?

Irradiation at BLIP

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PIE• We have applied for funding through ATR NSUF • Max 50k $ (~ 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 CommentsMechanical

propertyTensile 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

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Thank you for your attention