DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
AD0601654
Title:
RESISTOMETRIC INVESTIGATION OF THE RECOVERY OF DILUTED A1-MG ALLOYS COLD-WORKED AT LIQUID NITROGEN TEMPERATURE.
Corporate Author:
ISTITUTO SPERIMENTALE DEI METALLI LEGGERI MILAN (ITALY)
Report Date:
1964-01-30
Abstract:
A set of diluted A1-Mg alloys, with a Mg content varying from 0 99.995A1 to 1.48 at. , has been cold-worked by compression at liquid-nitrogen temperature, and the recovery of the electrical resistivity has been investigated in the temperature range from -190C to 340C. Four principal recovery stages, conventionally indicated as H-1, H-2, H-3 and H-4, can be envisaged, during the isochronal annealing, in pure Al as well as in the alloys. Stages H-2 and H-3, which appeared as the most important recovery stages, have been investigated in more detail by the isothermal annealing method. A tentative interpretation of the results has been advanced, assuming that the four recovery stages observed in alloys corresponds substantially to the same observed in pure Al. In this way stage H-1 can be identified with the release of interstitial-type defects from their traps stage H-2 can be identified with the migration of vacancies to dislocations stages H-3 and H-4 can be identified with the removal of dislocations by the polygonization and recristallization processes, respectively.
Descriptive Note:
Final rept. 1 Jan-31 Dec 63.
Pages:
0049
Contract Number:
DA91 591EUC2768
File Size:
0.00MB
