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Strain Induced Grain Boundary Migration in High Purity Aluminum

Paul A. Beck、P. R. Sperry1950-02-01OpenAlex

A method has been developed for the study of grain boundary migration in high purity aluminum, which allows positive determination of the direction of grain boundary movements. By means of this method it was confirmed that the migration of grain boundaries resulting from surface energy takes place in the direction tow…

Microstructure and mechanical propertiesAluminum Alloy Microstructure PropertiesMetallurgy and Material Forming

Determination of Crystallite Size with the X-Ray Spectrometer

Leroy Alexander、Harold P. Klug1950-02-01OpenAlex

The accuracy of the Scherrer crystallite size equation is limited in part by the uncertainty in β, the experimentally deduced pure diffraction broadening. Currently used procedures for estimating β from the observed breadth of a Debye-Scherrer line are not, in general, applicable to the x-ray spectrometer. By making u…

Enzyme Structure and FunctionAdvanced X-ray Imaging TechniquesX-ray Diffraction in Crystallography

Kinetics of Heterogeneous Nucleation

David Turnbull1950-02-01OpenAlex

Consider a phase transition α⇄β. Stable β-embryos can be retained in the temperature range of α-stability in cavities of suitable extraneous solids present in the system. Retained β-embryos may nucleate the α→β-transformation in the range of β-stability. Using these concepts a theory for the effect of thermal history…

Crystallization and Solubility Studiesnanoparticles nucleation surface interactionsChemical Thermodynamics and Molecular Structure