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Title: Study of the radiation damage effect on Titanium metastable beta alloy by high intensity proton beam

Abstract

A foil of a metastable Titanium alloy Ti-15V-3Cr-3Sn-3Al was irradiated at the J-PARC neutrino experimental facility with 1.4×1020 30 GeV protons at low temperature (100~130oC at most), and microstructural characterization and hardness testing were conducted as an initial study on the radiation damage effects of Titanium alloy by the high energy proton beam exposure. Expected radiation damage at beam center is about 0.06~0.12 displacement per atom. A high density (>1023 m-3) of a few nm-sized precipitates was observed by TEM studies, which is thought to be early stages of -phase formation, during the athermal process to fabricate the alloy. They did not appear to change substantially after irradiation with protons. In the irradiated specimen, we could not identify obvious signature of radiation damage distributed over proton beam profile. Meanwhile, very small, nanometer-scale black dots were seemingly visible at a low density in the most highly irradiated region, and could be small dislocation loops. The micro-indentation test indicated that the radiation exposure led to only about 6% increase in micro-hardness at beam center. Atom prove tomography reveals compositional fluctuation of 10 at% of amplitude less than 5 nm in both before and after irradiation, which may also indicate presence of richmore » -phase. These experimental results suggest this specific alloy may exhibit radiation damage resistance due to the existence of a high density of small precipitates, and further studies with higher exposure is worth to be conducted.« less

Authors:
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Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1434805
Alternate Identifier(s):
OSTI ID: 1437028; OSTI ID: 1496025; OSTI ID: 1515165
Report Number(s):
PNNL-SA-124685; FERMILAB-PUB-18-736-AD; PNNL-SA-134718
Journal ID: ISSN 2352-1791; S2352179117300935; PII: S2352179117300935
Grant/Contract Number:  
AC02-07CH11359; AC05-76RL01830
Resource Type:
Journal Article: Published Article
Journal Name:
Nuclear Materials and Energy
Additional Journal Information:
Journal Name: Nuclear Materials and Energy Journal Volume: 15 Journal Issue: C; Journal ID: ISSN 2352-1791
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
36 MATERIALS SCIENCE; Titanium alloy; Proton beam; Radiation damage; Target; Beam window

Citation Formats

Ishida, T., Wakai, E., Hagiwara, M., Makimura, S., Tada, M., Asner, D. M., Casella, A., Devaraj, A., Edwards, D., Prabhakaran, R., Senor, D., Hartz, M., Bhadra, S., Fiorentini, A., Cadabeschi, M., Martin, J., Konaka, A., Marino, A., Atherthon, A., Densham, C. J., Fitton, M., Ammigan, K., and Hurh, P. Study of the radiation damage effect on Titanium metastable beta alloy by high intensity proton beam. Netherlands: N. p., 2018. Web. doi:10.1016/j.nme.2018.04.006.
Ishida, T., Wakai, E., Hagiwara, M., Makimura, S., Tada, M., Asner, D. M., Casella, A., Devaraj, A., Edwards, D., Prabhakaran, R., Senor, D., Hartz, M., Bhadra, S., Fiorentini, A., Cadabeschi, M., Martin, J., Konaka, A., Marino, A., Atherthon, A., Densham, C. J., Fitton, M., Ammigan, K., & Hurh, P. Study of the radiation damage effect on Titanium metastable beta alloy by high intensity proton beam. Netherlands. https://doi.org/10.1016/j.nme.2018.04.006
Ishida, T., Wakai, E., Hagiwara, M., Makimura, S., Tada, M., Asner, D. M., Casella, A., Devaraj, A., Edwards, D., Prabhakaran, R., Senor, D., Hartz, M., Bhadra, S., Fiorentini, A., Cadabeschi, M., Martin, J., Konaka, A., Marino, A., Atherthon, A., Densham, C. J., Fitton, M., Ammigan, K., and Hurh, P. 2018. "Study of the radiation damage effect on Titanium metastable beta alloy by high intensity proton beam". Netherlands. https://doi.org/10.1016/j.nme.2018.04.006.
@article{osti_1434805,
title = {Study of the radiation damage effect on Titanium metastable beta alloy by high intensity proton beam},
author = {Ishida, T. and Wakai, E. and Hagiwara, M. and Makimura, S. and Tada, M. and Asner, D. M. and Casella, A. and Devaraj, A. and Edwards, D. and Prabhakaran, R. and Senor, D. and Hartz, M. and Bhadra, S. and Fiorentini, A. and Cadabeschi, M. and Martin, J. and Konaka, A. and Marino, A. and Atherthon, A. and Densham, C. J. and Fitton, M. and Ammigan, K. and Hurh, P.},
abstractNote = {A foil of a metastable Titanium alloy Ti-15V-3Cr-3Sn-3Al was irradiated at the J-PARC neutrino experimental facility with 1.4×1020 30 GeV protons at low temperature (100~130oC at most), and microstructural characterization and hardness testing were conducted as an initial study on the radiation damage effects of Titanium alloy by the high energy proton beam exposure. Expected radiation damage at beam center is about 0.06~0.12 displacement per atom. A high density (>1023 m-3) of a few nm-sized precipitates was observed by TEM studies, which is thought to be early stages of -phase formation, during the athermal process to fabricate the alloy. They did not appear to change substantially after irradiation with protons. In the irradiated specimen, we could not identify obvious signature of radiation damage distributed over proton beam profile. Meanwhile, very small, nanometer-scale black dots were seemingly visible at a low density in the most highly irradiated region, and could be small dislocation loops. The micro-indentation test indicated that the radiation exposure led to only about 6% increase in micro-hardness at beam center. Atom prove tomography reveals compositional fluctuation of 10 at% of amplitude less than 5 nm in both before and after irradiation, which may also indicate presence of rich -phase. These experimental results suggest this specific alloy may exhibit radiation damage resistance due to the existence of a high density of small precipitates, and further studies with higher exposure is worth to be conducted.},
doi = {10.1016/j.nme.2018.04.006},
url = {https://www.osti.gov/biblio/1434805}, journal = {Nuclear Materials and Energy},
issn = {2352-1791},
number = C,
volume = 15,
place = {Netherlands},
year = {Tue May 01 00:00:00 EDT 2018},
month = {Tue May 01 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1016/j.nme.2018.04.006

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Cited by: 3 works
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Figures / Tables:

Fig. 1 Fig. 1: The beam window separating helium vessel and accelerator vacuum, made of 0.3 mm-thick concentric Ti-6Al-4V partial hemispheres.

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.