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Study of the annealing of defects introduced in silver by cold-working (1962); Etude sur le recuit des defauts introduits dans l'argent par ecrouissage (1962)

Abstract

The tempering and the recrystallisation of silver (99.99 per cent purity) following cold-working is studied by means of density ({delta}d / d {approx_equal} 5.10{sup -6}) and microhardness measurements, and of X-ray diagrams. The results depend in particular on the type and the conditions of the cold-working. For a rolling of 200 per cent carried out at temperatures under 80 deg. C, the recrystallisation occurs already at room temperature. By means of isothermal annealings it has been possible to measure the self-diffusion energy (1.90 eV). For a rolling of 200 per cent carried out at room temperature, there occurs already at 25 deg. C an increase in the density corresponding to an elimination of vacancies. For a bicrystal subjected to a 200 per cent rolling, the tempering is accompanied, from 65 to 90 deg. C, by a decrease in the density due probably to the evaporation of vacancy-impurity complexes formed during the cold-working, the impurity is very likely oxygen. At high temperature, after recrystallisation, a new and big decrease in the density let on a swelling of the silver due no doubt to slightly soluble oxygen. The density of the dislocations formed is evaluated for the different types of cold working.  More>>
Authors:
Regnier-Lebouteux, F [1] 
  1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1962
Product Type:
Thesis/Dissertation
Report Number:
CEA-R-2126
Resource Relation:
Other Information: TH: These metallurgie speciale; 17 refs
Subject:
36 MATERIALS SCIENCE; ANNEALING; DENSITY; DISLOCATIONS; HARDENING; IMPURITIES; MICROHARDNESS; RECRYSTALLIZATION; SILVER; VACANCIES; X-RAY DIFFRACTION
OSTI ID:
20740245
Research Organizations:
CEA Saclay, 91 - Gif-sur-Yvette (France); Faculte des Sciences de l'Universite de Paris, 75 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR06R2126050061
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
65 pages
Announcement Date:
Jun 16, 2006

Citation Formats

Regnier-Lebouteux, F. Study of the annealing of defects introduced in silver by cold-working (1962); Etude sur le recuit des defauts introduits dans l'argent par ecrouissage (1962). France: N. p., 1962. Web.
Regnier-Lebouteux, F. Study of the annealing of defects introduced in silver by cold-working (1962); Etude sur le recuit des defauts introduits dans l'argent par ecrouissage (1962). France.
Regnier-Lebouteux, F. 1962. "Study of the annealing of defects introduced in silver by cold-working (1962); Etude sur le recuit des defauts introduits dans l'argent par ecrouissage (1962)." France.
@misc{etde_20740245,
title = {Study of the annealing of defects introduced in silver by cold-working (1962); Etude sur le recuit des defauts introduits dans l'argent par ecrouissage (1962)}
author = {Regnier-Lebouteux, F}
abstractNote = {The tempering and the recrystallisation of silver (99.99 per cent purity) following cold-working is studied by means of density ({delta}d / d {approx_equal} 5.10{sup -6}) and microhardness measurements, and of X-ray diagrams. The results depend in particular on the type and the conditions of the cold-working. For a rolling of 200 per cent carried out at temperatures under 80 deg. C, the recrystallisation occurs already at room temperature. By means of isothermal annealings it has been possible to measure the self-diffusion energy (1.90 eV). For a rolling of 200 per cent carried out at room temperature, there occurs already at 25 deg. C an increase in the density corresponding to an elimination of vacancies. For a bicrystal subjected to a 200 per cent rolling, the tempering is accompanied, from 65 to 90 deg. C, by a decrease in the density due probably to the evaporation of vacancy-impurity complexes formed during the cold-working, the impurity is very likely oxygen. At high temperature, after recrystallisation, a new and big decrease in the density let on a swelling of the silver due no doubt to slightly soluble oxygen. The density of the dislocations formed is evaluated for the different types of cold working. (author) [French] On etudie par des mesures de densite ({delta}d / d {approx_equal} 5.10{sup -6}) I de microdurete, et par des diagrammes de rayons X le revenu et la recristallisation de l'argent (purete 99,99 pour cent) apres ecrouissage. Les resultats dependent notablement du type et des conditions de l'ecrouissage. Pour un laminage de 200 pour cent effectue a temperature inferieure a 80 deg. C, on a observe la recristallisation des l'ambiante. Des recuits isothermes ont permis de mesurer l'energie d'autodiffusion (1,90 eV). Pour un laminage de 200 pour cent effectue a temperature ambiante, on constate des 25 deg. C une augmentation de densite correspondant a l'elimination de lacunes. Pour un bicristal lamine de 200 pour cent, le revenu s'accompagne, de 65 a 90 deg. C, d'une diminution de densite due probablement a l'evaporation de complexes lacune-impurete formes pendant l'ecrouissage, l'impurete devant etre l'oxygene. A haute temperature, apres recristallisation, une nouvelle et forte diminution de la densite revele un gonflement de l'argent du sans doute a l'oxygene peu soluble. Pour les differents types d'ecrouissage, on evalue la densite de dislocations creees. (auteur)}
place = {France}
year = {1962}
month = {Jul}
}