|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Nanostructured Materials for Nuclear Applications
||Effect of Tube Processing Methods on Microstructure and Mechanical Properties of Nanostructured Ferritic Alloys
||Eda Aydogan, O. Anderoglu, S.A. Maloy, S.C Vogel, G. Robert Odette, D.T. Hoelzer, J.J. Lewandowski, I.E. Anderson, J.R. Rieken
|On-Site Speaker (Planned)
Nanostructured ferritic alloys are attractive materials for core components in Generation IV reactors because of their excellent high temperature strength, stability, and radiation damage resistance. However, due to high strength it is challenging to produce them in the form of thin walled tubes for nuclear reactor cladding applications. In this research, innovative thermal spray deposition and conventional hot extrusion processing methods have been developed to produce the final tubes having approximately 0.5 mm wall thickness. The effect of the processing methods on the nanofeature dispersion, texture, and mechanical properties were investigated by using neutron diffraction, transmission electron microscopy, atom probe tomography and microhardness techniques. Conventional method results in stronger texture, finer grain and nanofeature size together with homogenous nanofeature distribution. Hardness of the tubes produced by thermal spray deposition is almost half of the one produced by hot extrusion. The theoretical strengthening mechanisms has been correlated with the experimental results.
||Planned: A print-only volume