Affordable Access

Publisher Website

Post irradiation plastic properties of F82H derived from the instrumented tensile tests

Authors
Publisher
Elsevier B.V.
Publication Date
Volume
335
Issue
3
Identifiers
DOI: 10.1016/j.jnucmat.2004.08.001

Abstract

Abstract F82H (Fe–8Cr–2W) and its variant doped with 2%Ni were irradiated up to 20 dpa at 300 °C in the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory. Post irradiation tensile testing was performed at room temperature. During testing, the images of the specimens including the necked region were continuously recorded. Tests on cold worked material were also carried out for comparison. From the load–displacement curves and the strain distributions obtains from the images, flow stress levels and strain hardening behavior was evaluated. A preliminary constitutive equation for the plastic deformation of irradiated F82H is presented. The results suggest that the irradiation mainly causes defect-induced hardening while it did not strongly affect strain hardening at the same flow stress level for F82H irradiated at 300 °C. The strain hardening of Ni doped specimens was, however, strongly affected by irradiation. Results provide basics to determine allowable stress levels at temperatures below 400 °C.

There are no comments yet on this publication. Be the first to share your thoughts.