TY - JOUR
T1 - Mechanical characterisation of V-4Cr-4Ti alloy
T2 - tensile tests under high energy synchrotron diffraction
AU - Sparks, Tay
AU - Nguyen-Manh, Duc
AU - Zheng, Pengfei
AU - Wróbel, Jan S.
AU - Sobieraj, Damian
AU - Gorley, Michael
AU - Connolley, Thomas
AU - Reinhard, Christina
AU - Wang, Yiqiang
AU - Cai, Biao
N1 - Crown Copyright © 2022 Published by Elsevier B.V. All rights reserved.
PY - 2022/7/18
Y1 - 2022/7/18
N2 - Vanadium base alloys represent potentially promising candidate structural materials for use in nuclear fusion reactors due to vanadium's low activity, high thermal strength, and good swelling resistance. In this work, the mechanical properties of the current frontrunner vanadium base alloy, V-4Cr-4Ti, have been interrogated using in-situ high energy X-ray diffraction (XRD) tensile testing at varying temperatures. The single crystal elastic constants of the samples were determined from the in-situ XRD data and used to evaluate results from density functional theory calculations. Polycrystalline elastic properties and Zener anisotropy were calculated from the single crystal elastic constants produced, revealing the effect of elevated temperature on the alloy's elastic properties. These results characterise important thermomechanical properties, valuable in mechanical modelling, that will allow further and improved analysis of the structural suitability of V-4Cr-4Ti ahead of alloy adoption in the mainstream.
AB - Vanadium base alloys represent potentially promising candidate structural materials for use in nuclear fusion reactors due to vanadium's low activity, high thermal strength, and good swelling resistance. In this work, the mechanical properties of the current frontrunner vanadium base alloy, V-4Cr-4Ti, have been interrogated using in-situ high energy X-ray diffraction (XRD) tensile testing at varying temperatures. The single crystal elastic constants of the samples were determined from the in-situ XRD data and used to evaluate results from density functional theory calculations. Polycrystalline elastic properties and Zener anisotropy were calculated from the single crystal elastic constants produced, revealing the effect of elevated temperature on the alloy's elastic properties. These results characterise important thermomechanical properties, valuable in mechanical modelling, that will allow further and improved analysis of the structural suitability of V-4Cr-4Ti ahead of alloy adoption in the mainstream.
KW - Nuclear materials
KW - Synchrotron x-ray diffraction
KW - Vanadium alloy
UR - http://www.scopus.com/inward/record.url?scp=85134586499&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2022.153911
DO - 10.1016/j.jnucmat.2022.153911
M3 - Article
SN - 0022-3115
VL - 569
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
M1 - 153911
ER -