โ Scribed by C. Panseri; P. Gatto; T. Federighi
No coin nor oath required. For personal study only.
Quite recently it was pointed out that by rapid quenching from high temperature, it is possible t,o quench in defects that will gradually disappear with subsequent annealing at, or below, room temperature. Such observations have been carried out by anelastic measurement on solid solution(1$ 2, and hg restivity measurements on pure goldc33 4, and on c( brass.(") When modern ideas on t,he theory of diffusion in metals(6) have been borne in mind, such defects have been identified with vacancies or groups of vacancies. In this preliminary not'e, it is shown that, by straight water quenching, defects of the same kind are quenched in pure aluminum (%99.9950,6). As distinguished from the procedure used by Kauffman and Koehler(3,4) and by Broom(5) our experiments h ave been carried out by quenching aluminum wires at room temperature, and plotting its electrical resistance versus time.
๐ SIMILAR VOLUMES
than are actually observed. In addition the model requires that reflections of the type (OO..!} should remain sharp and reflections of the type (hk.0) should become broadened.