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Title: 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 » 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.« less

Authors:
ORCiD logo [1];  [1];  [2]; ORCiD logo [1];  [1]; ORCiD logo [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. 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}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 2 works
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Figures / Tables:

Figure 1 Figure 1: Overview of RHEGAL positioned horizontally, where the equipment rests on an Aluminum frame which allows also vertical position.

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Works referenced in this record:

Microstructural and micromechanical characterization of IN718 theta shaped specimens built with electron beam melting
journal, April 2016


Unraveling structural evolution of LiNi0.5Mn1.5O4 by in situ neutron diffraction
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First In Situ Lattice Strains Measurements Under Load at VULCAN
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Probing Multiscale Transport and Inhomogeneity in a Lithium-Ion Pouch Cell Using In Situ Neutron Methods
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Operando Lithium Dynamics in the Li-Rich Layered Oxide Cathode Material via Neutron Diffraction
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Deformation dynamics study of a wrought magnesium alloy by real-time in situ neutron diffraction
journal, September 2013


Works referencing / citing this record:

A suite-level review of the neutron powder diffraction instruments at Oak Ridge National Laboratory
journal, September 2018

  • Calder, S.; An, K.; Boehler, R.
  • Review of Scientific Instruments, Vol. 89, Issue 9
  • DOI: 10.1063/1.5033906

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