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Accession Number:
AD0607236
Title:
THE RECRYSTALLIZATION KINETICS OF HIGH PURITY IRON.
Corporate Author:
MATERIALS RESEARCH CORP ORANGEBURG N Y
Report Date:
1964-08-01
Abstract:
Measurements have been made of the isothermal recrystallization kinetics of electron beam zone refined iron. The principal impurities in this material were tungsten, carbon, nitrogen, oxygen and hydrogen which together totalled approximately 50 ppm. The results are interpreted in terms of a theory of solute limited grain boundary migration re cently proposed by Cahn 1962. According to this interpretation the boundary velocity at low velocities is determined principally by drag due to the tungsten impurity atoms, while at high velocities it is determined principally by the other four species of impurities. Some evidence tending to support these conclusions was obtained by repeating the measurements on similar material to which extra carbon had been added. This had the effect, as expected, of slowing down the grain boundary migration more in the high velocity region than in the low. Author
Descriptive Note:
Final technical rept. for 1 Oct 62-1 Oct 63,
Pages:
0001
Contract Number:
AF33 657 9852
File Size:
0.00MB
