منابع مشابه
Hydrogen-vacancy interactions in Fe-C alloys.
Energetics and concentrations of hydrogen-containing point defect clusters (PDCs) in Fe-C alloys are calculated and cast into a PDC dominance diagram. Because of the strong binding effects of iron vacancies on the stability of the clusters, hydrogen accumulation requires the total hydrogen and vacancy concentrations to be comparable. As a result of the interplay between repulsive and attractive...
متن کاملMechanical behaviour of Fe-C alloys during phase transformations
The mechanical behaviour of Fe-C aiioys have been determined in their phase transformation ranges during isothermal or anisothermal transformations. Two models an analytical model and a fii te element model have been used in order to calculate the behaviour of the material. Considering a macroscopic scale, these models show that the mechanical behaviour can be well described when an additional ...
متن کاملMicrostructural Examination of Ni-ion Irradiated Fe-Ni-Cr Alloys Followed to Micro-zone Deformation
Examination of deformation microstructures induced by micro-indentation technique by means of transmission electron microscopy following an MV range metallic ion irradiation was performed in order to study the influence of irradiation-produced microstructural defects on plastic deformation behavior of materials. In this work, specimens of an Fe-Cr-Ni austenitic model ternary alloy before and af...
متن کاملPoint defect concentrations in metastable Fe-C alloys.
Point defect species and concentrations in metastable Fe-C alloys are determined using density functional theory and a constrained free-energy functional. Carbon interstitials dominate unless iron vacancies are in significant excess, whereas excess carbon causes greatly enhanced vacancy concentration. Our predictions are amenable to experimental verification; they provide a baseline for rationa...
متن کاملTHE DISLOCATION-ENHANCED SNOEK PEAK IN Fe-C ALLOYS
Some experimental condit ions which generate t h e d i s loca t ion-enhanced Snoek peak i n Fe-C a l l o y s a r e presented. The r e s u l t s i n d i e a t e t h a t the movement of non-screw d is loca t ion segments i s involved i n t h e pelaxat ion mechanism. The r e s u l t s a r e cons i s ten t with t h e movement of non-screw d i s loca t ions i n a medium with a v i s c o s i t y prop...
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ژورنال
عنوان ژورنال: Journal of Nuclear Science and Technology
سال: 1973
ISSN: 1881-1248,0022-3131
DOI: 10.3327/jnst.10.587