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Title: Irradiation creep by climb-enabled glide of dislocations resulting from preferred absorption of point defects

Abstract

A mechanism of irradiation creep is proposed that arises from the climb-enabled glide of dislocations due to stress-induced preferred absorption of radiation-produced point defects. This creep component we term preferred absorption glide, PAG. PAG-creep operates in addition to the previously studied components of creep from climb by stress-induced preferred absorption, PA-creep, and the climb-enabled glide due to excess absorption of interstitials on dislocations during swelling, l-creep. A formulation of the various climb and climb-enabled glide processes is presented which includes earlier results. PAG-creep is comparable in magnitude to PA-creep in the parameter range of applications. While the PA-creep rate and the l-creep rate are linear in stress, the PAG creep rate is quadratic stress and thus dominates at high stress.

Authors:
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (USA)
OSTI Identifier:
6886274
Alternate Identifier(s):
OSTI ID: 6886274
Report Number(s):
ORNL/TM-6443
TRN: 78-018808
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CREEP; MATHEMATICAL MODELS; PHYSICAL RADIATION EFFECTS; DISLOCATIONS; STRESSES; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; LINE DEFECTS; MECHANICAL PROPERTIES; RADIATION EFFECTS 360106* -- Metals & Alloys-- Radiation Effects

Citation Formats

Mansur, L.K.. Irradiation creep by climb-enabled glide of dislocations resulting from preferred absorption of point defects. United States: N. p., 1978. Web. doi:10.2172/6886274.
Mansur, L.K.. Irradiation creep by climb-enabled glide of dislocations resulting from preferred absorption of point defects. United States. doi:10.2172/6886274.
Mansur, L.K.. Tue . "Irradiation creep by climb-enabled glide of dislocations resulting from preferred absorption of point defects". United States. doi:10.2172/6886274. https://www.osti.gov/servlets/purl/6886274.
@article{osti_6886274,
title = {Irradiation creep by climb-enabled glide of dislocations resulting from preferred absorption of point defects},
author = {Mansur, L.K.},
abstractNote = {A mechanism of irradiation creep is proposed that arises from the climb-enabled glide of dislocations due to stress-induced preferred absorption of radiation-produced point defects. This creep component we term preferred absorption glide, PAG. PAG-creep operates in addition to the previously studied components of creep from climb by stress-induced preferred absorption, PA-creep, and the climb-enabled glide due to excess absorption of interstitials on dislocations during swelling, l-creep. A formulation of the various climb and climb-enabled glide processes is presented which includes earlier results. PAG-creep is comparable in magnitude to PA-creep in the parameter range of applications. While the PA-creep rate and the l-creep rate are linear in stress, the PAG creep rate is quadratic stress and thus dominates at high stress.},
doi = {10.2172/6886274},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 1978},
month = {Tue Aug 01 00:00:00 EDT 1978}
}

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