منابع مشابه
Of Grain Boundary Facets
Abatraet-constraints on diffusive creep cavity growth along grain boundary facets are studied for the limiting case when all facets oriented approximately normal to an applied tensik load am uniformly cavitated. This situation represents the opposite limiting case to when cavitated facets are we&sepamted and do not intemct with each other. The analysis is done for a 3-D periodic polycrystallii ...
متن کاملFive-parameter grain boundary distribution in grain boundary engineered brass
We report the first application of a five-parameter determination of grain boundary types to grain boundary engineered alpha-brass. The most important findings were that the distribution of planes showed a prevalence of <110> tilt boundaries, especially asymmetric tilt types, and the presence of <111> twist boundaries. This distribution resulted from the low energy of these boundary types.
متن کاملGrain boundary complexions
Grain boundaries exhibit phase-like behavior in which their structure, chemistry and properties may change discontinuously at critical values of thermodynamic parameters such as temperature, pressure and chemical potential. Therefore, grain boundaries (and other interfaces such as surfaces and heterophase boundaries) can be treated as thermodynamically stable interfacial states. To differentiat...
متن کاملCharacterization and Modeling of Grain Boundary Chemistry Evolution in Ferritic Steels under Irradiation
This paper describes a modeling approach to simulate radiation induced segregation arising from the inverse Kirkendall e↵ect in ferritic iron chrome alloys. The model considers only Frenkel pair damage initially, but is extended to examine cascade e↵ects through the introduction of defect clusters with di↵erent properties than the monomer species. Both models were found to be extremely sensitiv...
متن کاملEffect of Grain-Boundary Phase
Two types of hot-pressed silicon nitride, one having an amorphous grain-boundary phase (6 wt% yttria, 3 wt% alumina) and the other having a predominantly crystalline grain-boundary phase (8 wt% yttria, 1 wt% alumina), were tested on a split Hopkinson pressure bar with a momentum trap, such that, in each test, the sample was subjected to a single predefined stress pulse and then recovered withou...
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ژورنال
عنوان ژورنال: Le Journal de Physique Colloques
سال: 1988
ISSN: 0449-1947
DOI: 10.1051/jphyscol:1988657