RHEGAL: Resistive heating gas enclosure loadframe for in situ neutron scattering
Abstract
In situ neutron scattering is a powerful tool to reveal materials atomic structural response such as phase transformation, lattice straining, and texture under external stimuli. The advent of a high flux neutron source such as the Spallation Neutron Source (SNS) allows fast measurement in even non-equilibrium conditions, i.e., phase transformation in steels. However, the commercial fast heating apparatus such as commercial physical simulation equipment is not designed for in situ neutron scattering, which limits its application to in situ materials research by using neutrons. Here we present a resistive heating gas enclosure loadframe (RHEGAL) for non-equilibrium phase transformation studies by using in situ neutron scattering, which takes the advantage of high flux neutron sources like SNS. RHEGAL enables fast resistive heating of metal samples to 1200 °C at a rate up to 60 °C/s in an inert atmosphere. It provides both horizontal and vertical positions for scattering optimization. The mechanical loading capability also allows in situ high temperature tension above the oxidation temperature limit. The optimized translucent neutron scattering window by silicon allows both reflection and transmission measurements, making this equipment applicable for neutron diffraction, small angle scattering, and imaging. Furthermore, to demonstrate the fast heating capability, the phase transformationsmore »
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Colorado School of Mines, Golden, CO (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1479775
- Alternate Identifier(s):
- OSTI ID: 1471798
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Review of Scientific Instruments
- Additional Journal Information:
- Journal Volume: 89; Journal Issue: 9; Journal ID: ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; sample environment; neutron scattering; high temperature; stroboscopic measurement; phase transformation
Citation Formats
An, Ke, Armitage, Douglas P., Yu, Zhenzhen, Dickson, Richard W., Mills, Rebecca A., Feng, Zhili, and Skorpenske, Harley David. RHEGAL: Resistive heating gas enclosure loadframe for in situ neutron scattering. United States: N. p., 2018.
Web. doi:10.1063/1.5033566.
An, Ke, Armitage, Douglas P., Yu, Zhenzhen, Dickson, Richard W., Mills, Rebecca A., Feng, Zhili, & Skorpenske, Harley David. RHEGAL: Resistive heating gas enclosure loadframe for in situ neutron scattering. United States. https://doi.org/10.1063/1.5033566
An, Ke, Armitage, Douglas P., Yu, Zhenzhen, Dickson, Richard W., Mills, Rebecca A., Feng, Zhili, and Skorpenske, Harley David. Fri .
"RHEGAL: Resistive heating gas enclosure loadframe for in situ neutron scattering". United States. https://doi.org/10.1063/1.5033566. https://www.osti.gov/servlets/purl/1479775.
@article{osti_1479775,
title = {RHEGAL: Resistive heating gas enclosure loadframe for in situ neutron scattering},
author = {An, Ke and Armitage, Douglas P. and Yu, Zhenzhen and Dickson, Richard W. and Mills, Rebecca A. and Feng, Zhili and Skorpenske, Harley David},
abstractNote = {In situ neutron scattering is a powerful tool to reveal materials atomic structural response such as phase transformation, lattice straining, and texture under external stimuli. The advent of a high flux neutron source such as the Spallation Neutron Source (SNS) allows fast measurement in even non-equilibrium conditions, i.e., phase transformation in steels. However, the commercial fast heating apparatus such as commercial physical simulation equipment is not designed for in situ neutron scattering, which limits its application to in situ materials research by using neutrons. Here we present a resistive heating gas enclosure loadframe (RHEGAL) for non-equilibrium phase transformation studies by using in situ neutron scattering, which takes the advantage of high flux neutron sources like SNS. RHEGAL enables fast resistive heating of metal samples to 1200 °C at a rate up to 60 °C/s in an inert atmosphere. It provides both horizontal and vertical positions for scattering optimization. The mechanical loading capability also allows in situ high temperature tension above the oxidation temperature limit. The optimized translucent neutron scattering window by silicon allows both reflection and transmission measurements, making this equipment applicable for neutron diffraction, small angle scattering, and imaging. Furthermore, to demonstrate the fast heating capability, the phase transformations of an example of advanced high strength steel heated at 3 °C/s and 30 °C/s were measured with the VULCAN engineering diffractometer, and the different phase transformation kinetics by neutron diffraction were presented.},
doi = {10.1063/1.5033566},
journal = {Review of Scientific Instruments},
number = 9,
volume = 89,
place = {United States},
year = {Fri Sep 21 00:00:00 EDT 2018},
month = {Fri Sep 21 00:00:00 EDT 2018}
}
Web of Science
Figures / Tables:
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Works referencing / citing this record:
A suite-level review of the neutron powder diffraction instruments at Oak Ridge National Laboratory
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- Review of Scientific Instruments, Vol. 89, Issue 9