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Title: Effect of helium preinjection and prior thermomechanical treatment on the microstructure of Type 316 SS

Conference ·
OSTI ID:6436064

Samples of 316 SS were preinjected with 15 appM helium either hot (650/sup 0/C) or cold (room temperature) and irradiated with 3 MeV Ni/sup +/ ions to a dose level of 25 dpa at 625/sup 0/C in order to test the validity of helium preinjection as a means of simulation of transmutant helium production. Results for preinjected and single-ion irradiated samples were compared to samples irradiated with 3 MeV Ni/sup +/ and simultaneously injected with helium at a rate of 15 appM He/dpa (dual-ion irradiated samples). Preinjected samples exhibited bimodal cavity size distributions. Preinjected samples of solution annealed or solution annealed and aged material showed lower swelling than dual-ion irradiated samples. However, He preinjection in 20% cold worked samples showed greater swelling than dual-ion irradiated samples 9 figures, 1 table.

Research Organization:
Argonne National Lab., IL (USA)
DOE Contract Number:
W-31-109-ENG-38
OSTI ID:
6436064
Report Number(s):
CONF-821049-14; ON: DE83007743
Resource Relation:
Conference: TMS/AIME fall meeting, St. Louis, MO, USA, 24 Oct 1982
Country of Publication:
United States
Language:
English