A microscopic and crystallographic study of proton irradiated alloy 718

Silva, Chinthaka; Song, Miao; Wang, Mi; Holliday, Kiel; Leonard, Keith; Was, Gary; Busby, Jeremy

doi:10.1016/j.jnucmat.2021.152954

A microscopic and crystallographic study of proton irradiated alloy 718

Journal Article · Thu Mar 25 00:00:00 EDT 2021 · Journal of Nuclear Materials

DOI:https://doi.org/10.1016/j.jnucmat.2021.152954· OSTI ID:1776669

^[1]; Song, Miao ^[2]; Wang, Mi ^[2]; ^[3]; Leonard, Keith ^[4]; Was, Gary ^[2]; Busby, Jeremy ^[5]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of Michigan, Ann Arbor, MI (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Torch Technologies, Huntsville, AL (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Solution annealing and age hardening are important processes for achieving good engineering and chemical properties of alloy 718. The composition of alloy 718 also plays an important role as it can affect both mechanical (γ”- and γ’-phase formation) and irradiation behaviors. Therefore, in this study five different sets of alloy 718 samples with two different chemical compositions were fabricated using different processing conditions and irradiated up to 4 dpa. Based on the effects of irradiation on the microstructural data of γ”- and γ’-phases, irradiation-induced dislocation statistics, and crystallographic data, it can be inferred that the samples processed at high solution annealing temperature (1093°C) behave better under irradiation compared to the samples processed at low solution annealing temperatures (945 and 1065°C).

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: Electric Power Research Institute (EPRI); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1776669

Report Number(s):: LLNL-JRNL--815719; 1024957

Journal Information:: Journal of Nuclear Materials, Journal Name: Journal of Nuclear Materials Journal Issue: na Vol. 551; ISSN 0022-3115

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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