skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Quantifying the stress fields due to a delta-hydride precipitate in alpha-Zr matrix

Abstract

This report is a preliminary study on δ-hydride precipitate in zirconium alloy performed using 3D discrete dislocation dynamics simulations. The ability of dislocations in modifying the largely anisotropic stress fields developed by the hydride particle in a matrix phase is addressed for a specific dimension of the hydride. The influential role of probable dislocation nucleation at the hydride-matrix interface is reported. Dislocation nucleation around a hydride was found to decrease the shear stress (S 13) and also increase the normal stresses inside the hydride. We derive conclusions on the formation of stacks of hydrides in zirconium alloys. The contribution of mechanical fields due to dislocations was found to have a non-negligible effect on such process.

Authors:
 [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1402569
Report Number(s):
LA-UR-17-29185
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Tummala, Hareesh, Capolungo, Laurent, and Tome, Carlos N. Quantifying the stress fields due to a delta-hydride precipitate in alpha-Zr matrix. United States: N. p., 2017. Web. doi:10.2172/1402569.
Tummala, Hareesh, Capolungo, Laurent, & Tome, Carlos N. Quantifying the stress fields due to a delta-hydride precipitate in alpha-Zr matrix. United States. doi:10.2172/1402569.
Tummala, Hareesh, Capolungo, Laurent, and Tome, Carlos N. Thu . "Quantifying the stress fields due to a delta-hydride precipitate in alpha-Zr matrix". United States. doi:10.2172/1402569. https://www.osti.gov/servlets/purl/1402569.
@article{osti_1402569,
title = {Quantifying the stress fields due to a delta-hydride precipitate in alpha-Zr matrix},
author = {Tummala, Hareesh and Capolungo, Laurent and Tome, Carlos N.},
abstractNote = {This report is a preliminary study on δ-hydride precipitate in zirconium alloy performed using 3D discrete dislocation dynamics simulations. The ability of dislocations in modifying the largely anisotropic stress fields developed by the hydride particle in a matrix phase is addressed for a specific dimension of the hydride. The influential role of probable dislocation nucleation at the hydride-matrix interface is reported. Dislocation nucleation around a hydride was found to decrease the shear stress (S13) and also increase the normal stresses inside the hydride. We derive conclusions on the formation of stacks of hydrides in zirconium alloys. The contribution of mechanical fields due to dislocations was found to have a non-negligible effect on such process.},
doi = {10.2172/1402569},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Oct 19 00:00:00 EDT 2017},
month = {Thu Oct 19 00:00:00 EDT 2017}
}

Technical Report:

Save / Share: