β Scribed by R.L. Fleischer
No coin nor oath required. For personal study only.
If it acquires a screw orientation, it will dissociate into partials and glide on an octahedral plane; if it acquires an edge orientation, it will dissociate into a barrier and become sessile. This reasoning is in agreement with the failures to observe slip on cube planes in highly favorable stress situations.(splO)
The authors are grateful to the Atomic Energy Commission for financial support.
π SIMILAR VOLUMES
The ratio of grain-boundary to surface energy has been determined as a function of composition in the gold-copper system. From interferometric measurements of the boundary groove angles in specimens thermally etched at 85O"C, the following average grain-boundary to surface-energy ratios were obtaine
In an earlier paper the diffusion equation associated with grain boundary grooving was solved and it was concluded that surface diffusion was the dominant transport mechanism for copper. For this mechanism the theory predicts that the shape of the groove profile has a time independent form and that
diameters on each atom plane; and this is clearly not achieved over large volumes of the material. The nearest approximation to this case is fine flip, in which the displacement is about 50 k on many slip-planes 200 pi apart. Here the maximum rise in temperat~e might be a few degrees if many of t-he
The correlation between gram boundary embrittlement and the atomic structure of the boundaries were investigated in Cu f 0.1'6 Bi alloy by measuring the degrees of embrittlement (by means of varying degrees of ultrasonic irradiation) of about 10.000 boundaries of various structures. as a function of