Low Temperature Ageing Behaviour of U-Nb $\alpha''$ Phase Alloys

JE Sutcliffe; CP Jones; JE Darnbrough; KR Hallam; RS Springell; P Ryan; T Cartwright; TB Scott

Low Temperature Ageing Behaviour of U-Nb $\alpha''$ Phase Alloys

Materials Science 2018-03-16 v1

Authors: JE Sutcliffe , CP Jones , JE Darnbrough , KR Hallam , RS Springell , P Ryan , T Cartwright , TB Scott

Abstract

Ageing mechanisms of the U-5\,\%wtNb system have been investigated on samples exposed to temperatures of 150 $\,^{\circ}$ C for up to 5000\,hours. A variety of surface and bulk analytic techniques have been used to investigate phase, chemical and crystallographic changes. Characterisation of microstructural evolution was carried out through secondary electron microscopy (SEM), energy dispersive x-ray spectroscopy (EDS), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM) and x-ray diffraction (XRD). This investigation suggests crystallographic defects such as twinning furthers the martensitic tendencies with ageing. Resizing of the lattice and shuffling of atoms results in a small progression from the $\alpha''$ towards the $\alpha'$ phase.

Keywords

u-nb alloy alpha'' phase low temperature ageing martensitic twinning microstructure xrd

Cite

@article{arxiv.1803.05709,
  title  = {Low Temperature Ageing Behaviour of U-Nb $\alpha''$ Phase Alloys},
  author = {JE Sutcliffe and CP Jones and JE Darnbrough and KR Hallam and RS Springell and P Ryan and T Cartwright and TB Scott},
  journal= {arXiv preprint arXiv:1803.05709},
  year   = {2018}
}

Low Temperature Ageing Behaviour of U-Nb $\alpha''$ Phase Alloys

Abstract

Keywords

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