TY - JOUR
T1 - Residual strain measurement using neutron diffraction for practical Nb 3Sn wires under a tensile load
AU - Oguro, Hidetoshi
AU - Awaji, Satoshi
AU - Nishijima, Gen
AU - Takahashi, Kohki
AU - Watanabe, Kazuo
AU - MacHiya, Shutaro
AU - Suzuki, Hiroshi
AU - Tsuchiya, Yoshinori
AU - Osamura, Kozo
PY - 2010
Y1 - 2010
N2 - Residual strains for practical Nb3Sn superconducting wires were measured directly using neutron diffraction. Seven wires, stacked with epoxy resin, were measured under a tensile load at room temperature. As a result, the three-dimensional strain was obtained up to 0.5% axial tensile strain. We found that the neutron diffraction result is consistent with the strain measured using strain gauges and extensometers at the same time, although the strains increased due to the long measurement time. The ratio between the axial and lateral strains is about 0.33, although the Cu-Sn, Cu and CuNb were plastic in this region. The ratio is an important value for evaluating three-dimensional strain effects on the superconducting properties of Nb3Sn wires.
AB - Residual strains for practical Nb3Sn superconducting wires were measured directly using neutron diffraction. Seven wires, stacked with epoxy resin, were measured under a tensile load at room temperature. As a result, the three-dimensional strain was obtained up to 0.5% axial tensile strain. We found that the neutron diffraction result is consistent with the strain measured using strain gauges and extensometers at the same time, although the strains increased due to the long measurement time. The ratio between the axial and lateral strains is about 0.33, although the Cu-Sn, Cu and CuNb were plastic in this region. The ratio is an important value for evaluating three-dimensional strain effects on the superconducting properties of Nb3Sn wires.
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U2 - 10.1088/0953-2048/23/2/025034
DO - 10.1088/0953-2048/23/2/025034
M3 - Article
AN - SCOPUS:76849115271
VL - 23
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
IS - 2
M1 - 025034
ER -