Paper Title:
Cluster Dynamics Study of Neutron Irradiation Induced Defects in Fe-12.5at%Cr Alloy
  Abstract

Cluster dynamics (CD) is used to study the evolution of the size distributions of vacancy clusters (VC), self-interstitial atom (SIA) clusters (SIAC) and Cr precipitates in neutron irradiated Fe-12.5at%Cr alloys at T = 573 K with irradiation doses up to 12 dpa and a flux of 140 ndpa/s. Transmission electron microscopy (TEM) and small angle neutron scattering (SANS) data on the defect structure of this material irradiated at doses of 0.6 and 1.5 dpa are used to calibrate the model. A saturation behavior was found by CD for the free vacancy and free SIA concentrations as well as for the number density of the SIAC and the volume fraction of the Cr precipitates for neutron exposures above 0.006 dpa. The CD simulations also indicate the presence of VC with radii less than 0.5 nm and a strong SIAC peak with a mean diameter of about 0.5 nm, both invisible in SANS and TEM experiments. A specific surface tension of about 0.028 J/m2 between the a matrix and the Cr-rich a' precipitate was found as best fit value for reproducing the long-term Cr evolution in the irradiated Fe-12.5%Cr alloys observed by SANS.

  Info
Periodical
Solid State Phenomena (Volumes 172-174)
Edited by
Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson
Pages
449-457
DOI
10.4028/www.scientific.net/SSP.172-174.449
Citation
A. R. Gokhman, A. Ulbricht, U. Birkenheuer, F. Bergner, "Cluster Dynamics Study of Neutron Irradiation Induced Defects in Fe-12.5at%Cr Alloy", Solid State Phenomena, Vols. 172-174, pp. 449-457, 2011
Online since
June 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hisao Kinoshita, Benfu Hu, H. Takahashi
Abstract:The effects of helium and aging treatment on radiation damage behavior in low activation Fe-Cr-Mn ( W, V) alloy were investigated by electron...
1455
Authors: H. Watanabe, M. Nagamine, K. Yamasaki, Naoaki Yoshida, Nam-Jin Heo, Takuya Nagasaka, Takeo Muroga
Abstract:Laser welded high purity V-4Cr-4Ti alloy (NIFS-HEAT2), fabricated by National Institute for Fusion Science (NIFS), was used for this study....
1491
Authors: Oliver J. Weiss, Ermile Gaganidze, Jarir Aktaa
Abstract:The objective of this work is to evaluate the microstructure of the neutron-irradiated reduced activation ferritic/martensitic (RAFM) steel...
118
Authors: He Fei Huang, De Hui Li, Long Yan
Chapter 1: Materials for Nuclear Fission and Fusion Technologies
Abstract:The irradiation effects of a new nickel-base alloy (Ni-17Mo-7Cr) has been investigated by using 1 MeV Xe20+ and 7 MeV...
69