✍ Scribed by J.M. Darbyshire; J. Barford
No coin nor oath required. For personal study only.
with precipitate distribution and size than with reaction rates but it appears that a very strong case involving vacancies was established, particularly in connection with their "PFZ" areas.
Further, the anomalously high diffusion rates generally observed in age hardening can be adequately accounted for in terms of vacancy supersaturation.
The fact that precipitation is sometimes seen to occur on dislocations, in quenched solid solutions subjected to straining, does not in itself, I submit, prove that solute locking has occurred during straining. One could argue that in the absence of sufficient vacancies nucleation is easier at dislocations and that solute diffusion from matrix to dislocations takes place.
However, the view of D & B could be tested directly I believe, since the dislocation friction stress should be affected to a measurable extent if solute atoms become locked to dislocations during straining.
📜 SIMILAR VOLUMES
With 1 MeV/u H + , He 2+ and Li 3+ beams incident on a carbon foil of 2.2 lg/cm 2 in thickness, the statistical distributions of the number of simultaneously emitted secondary electrons (SE's) have been measured as a function of the emergent angle of foil-transmitted ions in the range from 0.0 mrad