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Radiation induced structural changes in alpha-copper-zinc alloys

Technical Report:

Abstract

During irradiation of alpha-copper-zinc alloys with high energy electrons and protons a decrease of the electrical resistivity due to an increase of the degree of short range order is observed through radiation enhanced diffusion followed by an increase of the electrical resistivity through the formation of radiation induced interstitial clusters. The initial formation rate of interstitial clusters increases about linearly with the displacement rate for electron and proton irradiation. The largest initial formation rate is found between 60 and 130{sup 0}C becoming negligibly small above 158{sup 0}C and decreases drastically below 60{sup 0}C. The dynamic steady state interstitial cluster concentration increases with decreasing irradiation temperature in the investigated temperature range between 158 and 40{sup 0}C. Above 158{sup 0}C the formation rate of interstitial clusters is negligibly small. Thus the transition temperature for radiation induced interstitial cluster formation is 158{sup 0}C, depending mainly on the migration activition energy of vacancies. The radiation induced interstitial clusters are precipitates in those alloys in which the diffusion rate of the undersized component atoms via an interstitialcy diffusion mechanism is larger than that of the other atoms.
Authors:
Schuele, W; Gieb, M [1] 
  1. Commission of the European Communities, Ispra (Italy). Joint Research Centre
Publication Date:
Dec 31, 1991
Product Type:
Technical Report
Report Number:
EUR-13270
Reference Number:
SCA: 360106; PA: FRD-92:000006; SN: 92000651851
Resource Relation:
Other Information: PBD: 1991
Subject:
36 MATERIALS SCIENCE; COPPER BASE ALLOYS; RADIATION EFFECTS; ZINC ALLOYS; ELECTRON BEAMS; MEV RANGE 01-10; PROTON BEAMS; MEV RANGE 10-100; ELECTRIC CONDUCTIVITY; SOLID CLUSTERS; DIFFUSION; ANNEALING; TEMPERATURE DEPENDENCE; TIME DEPENDENCE; INTERSTITIALS; 360106
OSTI ID:
10114230
Research Organizations:
Commission of the European Communities, Luxembourg (Luxembourg)
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Other: ON: TI92761836; TRN: FR9200006
Availability:
OSTI; NTIS (US Sales Only)
Submitting Site:
FRN
Size:
29 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Schuele, W, and Gieb, M. Radiation induced structural changes in alpha-copper-zinc alloys. France: N. p., 1991. Web.
Schuele, W, & Gieb, M. Radiation induced structural changes in alpha-copper-zinc alloys. France.
Schuele, W, and Gieb, M. 1991. "Radiation induced structural changes in alpha-copper-zinc alloys." France.
@misc{etde_10114230,
title = {Radiation induced structural changes in alpha-copper-zinc alloys}
author = {Schuele, W, and Gieb, M}
abstractNote = {During irradiation of alpha-copper-zinc alloys with high energy electrons and protons a decrease of the electrical resistivity due to an increase of the degree of short range order is observed through radiation enhanced diffusion followed by an increase of the electrical resistivity through the formation of radiation induced interstitial clusters. The initial formation rate of interstitial clusters increases about linearly with the displacement rate for electron and proton irradiation. The largest initial formation rate is found between 60 and 130{sup 0}C becoming negligibly small above 158{sup 0}C and decreases drastically below 60{sup 0}C. The dynamic steady state interstitial cluster concentration increases with decreasing irradiation temperature in the investigated temperature range between 158 and 40{sup 0}C. Above 158{sup 0}C the formation rate of interstitial clusters is negligibly small. Thus the transition temperature for radiation induced interstitial cluster formation is 158{sup 0}C, depending mainly on the migration activition energy of vacancies. The radiation induced interstitial clusters are precipitates in those alloys in which the diffusion rate of the undersized component atoms via an interstitialcy diffusion mechanism is larger than that of the other atoms.}
place = {France}
year = {1991}
month = {Dec}
}