Exterior similarity: right snap from a low level paper with rust [Fe2O3 H2O] resold to readers as elemental transmutation - CAVEAT: tricks for academic funding and errors are ever lurking
Ahlfors , I really dislike those hints thrown to the air about the quality of a work published under peer review in several journals.
I have read most of the papers of the ultrasound applied to steel bars. I have previously said, and I mantain the position, that proving transmutations in solids is a complex matter, specially because you can never know if what the process triggers is real transmutation or any effect that contributes to expose any previosly existing inclusion on the metallic matrix. That said, the pits in the steel bars exposed to ultrasound do have elemental anomalies, of course O can be result of oxidation, but other new elements are harder to explain this way.