Small-scale testing of in-core fast reactor materials

Peter Hosemann; Yong Dai; Erich Stergar; Andrew T. Nelson; Stuart A. Maloy

doi:10.3327/jnst.48.575

Small-scale testing of in-core fast reactor materials

Peter Hosemann, Yong Dai, Erich Stergar, Andrew T. Nelson, Stuart A. Maloy

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Part of the Fuel Cycle R&D (FCRD) initiative in the USA is to investigate materials for high dose application. While mechanical testing on large samples delivers direct engineering data, these types of tests are only possible if enough sample material and required hot cell capabilities are available. Smallscale materials testing methods in addition to large-scale materials testing allows insight on the same specimen and direct probing into areas of interest which are not accessible otherwise. In order to establish an empirical and research-based relationship between small-scale and large-scale materials testing, several different mechanical testing techniques were conducted on the same specimen irradiated in the Swiss spallation source irradiation program (STIP) at the Swiss spallation source (SINQ) at the Paul Scherrer Institute (PSI) up to a dose of 19 dpa. It is shown that the yield strength measured by tensile testing, microcompression testing and microhardness testing all show the same trend. In addition, focused ion beam (FIB)-based techniques also are used to produce local electrode atom probe (LEAP) samples. This procedure allows cutting samples of such a small size that no radioactivity on the prepared sample can be measured.

Original language	English
Pages (from-to)	575-579
Number of pages	5
Journal	Journal of Nuclear Science and Technology
Volume	48
Issue number	4
DOIs	https://doi.org/10.3327/jnst.48.575
State	Published - Apr 2011
Externally published	Yes

Funding

This work was performed, in part, at the Center for Integrated Nanotechnologies, a US Department of Energy, Office of Basic Energy Sciences user facility. Los Alamos National Laboratory, an affirmative action equal opportunity employer, is operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the US Department of Energy under Contract DE-AC52-06NA25396. The University of Leoben, and in particular, Dr. Harald Leitner and Prof. Dr. Helmut Clemens were supportive of this work by allowing extensive student exchange. The Energy Frontier Research Center (EFRC) lead by Michael Nastasi allowed for extensive information exchange and support.

Funders	Funder number
U.S. Department of Energy
Basic Energy Sciences
National Nuclear Security Administration	DE-AC52-06NA25396
Center for Integrated Healthcare, U.S. Department of Veterans Affairs

Keywords

F/M steel
FFTF
HT-9
Indentation
LEAP
Microcompression testing

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10.3327/jnst.48.575

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abstract = "Part of the Fuel Cycle R&D (FCRD) initiative in the USA is to investigate materials for high dose application. While mechanical testing on large samples delivers direct engineering data, these types of tests are only possible if enough sample material and required hot cell capabilities are available. Smallscale materials testing methods in addition to large-scale materials testing allows insight on the same specimen and direct probing into areas of interest which are not accessible otherwise. In order to establish an empirical and research-based relationship between small-scale and large-scale materials testing, several different mechanical testing techniques were conducted on the same specimen irradiated in the Swiss spallation source irradiation program (STIP) at the Swiss spallation source (SINQ) at the Paul Scherrer Institute (PSI) up to a dose of 19 dpa. It is shown that the yield strength measured by tensile testing, microcompression testing and microhardness testing all show the same trend. In addition, focused ion beam (FIB)-based techniques also are used to produce local electrode atom probe (LEAP) samples. This procedure allows cutting samples of such a small size that no radioactivity on the prepared sample can be measured.",

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AU - Stergar, Erich

AU - Nelson, Andrew T.

AU - Maloy, Stuart A.

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AB - Part of the Fuel Cycle R&D (FCRD) initiative in the USA is to investigate materials for high dose application. While mechanical testing on large samples delivers direct engineering data, these types of tests are only possible if enough sample material and required hot cell capabilities are available. Smallscale materials testing methods in addition to large-scale materials testing allows insight on the same specimen and direct probing into areas of interest which are not accessible otherwise. In order to establish an empirical and research-based relationship between small-scale and large-scale materials testing, several different mechanical testing techniques were conducted on the same specimen irradiated in the Swiss spallation source irradiation program (STIP) at the Swiss spallation source (SINQ) at the Paul Scherrer Institute (PSI) up to a dose of 19 dpa. It is shown that the yield strength measured by tensile testing, microcompression testing and microhardness testing all show the same trend. In addition, focused ion beam (FIB)-based techniques also are used to produce local electrode atom probe (LEAP) samples. This procedure allows cutting samples of such a small size that no radioactivity on the prepared sample can be measured.

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Small-scale testing of in-core fast reactor materials

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Keywords

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