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Irradiation creep by climb-enables glide of dislocations resulting from preferred absorption of point defects

Journal Article:

Abstract

A mechanism of irradiation creep arising from the climb-enabled glide of dislocations due to stress-induced preferred absorption of radiation-produced point defects is proposed. This creep component is here termed preferred absorption glide, PAG. PAG-creep operates in addition to the previously studied components of creep from climb by stress-induced preferred absorption, (SI) PA-creep, and the climb-enabled glide due to excess absorption of interstitials on dislocations during swelling, I-creep. A formulation of the various climb and climb-enabled glide processes which includes earlier results is presented. PAG-creep is comparable in magnitude to PA-creep in the parameter range of applications. While the PSA-creep rate and the I-creep rate are linear in stress, the PAG-creep rate is quadratic in stress and thus dominates at high stresses.
Authors:
Mansur, L K [1] 
  1. Oak Ridge National Lab., TN (USA)
Publication Date:
Apr 01, 1979
Product Type:
Journal Article
Reference Number:
AIX-10-481901; ERA-05-012205; EDB-80-028931
Resource Relation:
Journal Name: Philos. Mag., A; (United Kingdom); Journal Volume: 39:4
Subject:
36 MATERIALS SCIENCE; PHYSICAL RADIATION EFFECTS; CREEP; ABSORPTION; DISLOCATIONS; IRRADIATION; POINT DEFECTS; STRESSES; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; LINE DEFECTS; MECHANICAL PROPERTIES; RADIATION EFFECTS; 360106* - Metals & Alloys- Radiation Effects; 360103 - Metals & Alloys- Mechanical Properties
OSTI ID:
5661389
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: PMAAD
Submitting Site:
INIS
Size:
Pages: 497-506
Announcement Date:
Dec 01, 1979

Journal Article:

Citation Formats

Mansur, L K. Irradiation creep by climb-enables glide of dislocations resulting from preferred absorption of point defects. United Kingdom: N. p., 1979. Web.
Mansur, L K. Irradiation creep by climb-enables glide of dislocations resulting from preferred absorption of point defects. United Kingdom.
Mansur, L K. 1979. "Irradiation creep by climb-enables glide of dislocations resulting from preferred absorption of point defects." United Kingdom.
@misc{etde_5661389,
title = {Irradiation creep by climb-enables glide of dislocations resulting from preferred absorption of point defects}
author = {Mansur, L K}
abstractNote = {A mechanism of irradiation creep arising from the climb-enabled glide of dislocations due to stress-induced preferred absorption of radiation-produced point defects is proposed. This creep component is here termed preferred absorption glide, PAG. PAG-creep operates in addition to the previously studied components of creep from climb by stress-induced preferred absorption, (SI) PA-creep, and the climb-enabled glide due to excess absorption of interstitials on dislocations during swelling, I-creep. A formulation of the various climb and climb-enabled glide processes which includes earlier results is presented. PAG-creep is comparable in magnitude to PA-creep in the parameter range of applications. While the PSA-creep rate and the I-creep rate are linear in stress, the PAG-creep rate is quadratic in stress and thus dominates at high stresses.}
journal = {Philos. Mag., A; (United Kingdom)}
volume = {39:4}
journal type = {AC}
place = {United Kingdom}
year = {1979}
month = {Apr}
}