Low Temperature Diffusion Transformations in Fe–Ni–Ti Alloys During Deformation and Irradiation

다국어 초록 (Multilingual Abstract)

The deformation-induced dissolution of Ni3Tiintermetallics in the matrix of austenitic alloys of Fe–36Ni–3Ti type wasrevealed in the course of their cascade-forming neutron irradiation and cold deformation at low temperatures via employmentof Mössbauer method. The anomalous deformation-related dissolution of the intermetallics has been explained by themigration of deformation-induced interstitial atoms from the particles into a matrix in the stress field of moving dislocations.
When rising the deformation temperature, this process is substituted for by the intermetallics precipitation accelerated bypoint defects. A calculation of diffusion processes has shown the possibility of the realization of the low-temperature diffusionof interstitial atoms in configurations of the crowdions and dumbbell pairs at 77–173 K. The existence of interstitialatoms in the Fe–36Ni alloy irradiated by electrons or deformed at 77 K was substantiated in the experiments of the electricalresistivity measurements.

참고문헌 (Reference)

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